Radiant Heating — вопросы Канада


Radiant Heating — вопросы Канада

Radiant heating — is a technology utilized for the heating of both indoor and outdoor areas. Radiant heating consists of radiant energy being emitted from a heat source.Radiant heating heats a building through radiant heat, rather than other conventional methods… … Wikipedia

radiant heating — n. a method of heating a space by means of radiation, as from electric coils, hot water or steam pipes, etc. installed in the floor or walls … English World dictionary

radiant heating — 1. the means of heating objects or persons by radiation in which the intervening air is not heated. 2. a system for heating by radiation from a surface, esp. from a surface heated by means of electric resistance, hot water, etc. [1910 15] * * *… … Universalium

radiant heating — noun heating a building by radiation from panels containing hot water or electrical heaters • Hypernyms: ↑heating, ↑warming * * * noun : panel heating * * * 1. the means of heating objects or persons by radiation in which the intervening air is… … Useful english dictionary

radiant heating — kaitinimas spinduliuote statusas T sritis fizika atitikmenys: angl. radiant heating; radiation heating vok. Strahlungsaufheizung, f rus. лучистый нагрев, m; радиационный нагрев, m pranc. chauffage par radiation, m; chauffage par rayonnement, m … Fizikos terminų žodynas

radiant heating — Heating system in which warm or hot surfaces are used to radiate heat into the space to be conditioned … Dictionary of automotive terms

radiant heating — ra′diant heat′ing n. 1) ene bui the means of heating objects or persons by radiation in which the intervening air is not heated 2) ene bui a system for heating by radiation from a surface, esp. from a surface heated by means of electric… … From formal English to slang

Radiant Heating System — A heating system where heat is supplied (radiated) into a room by means of heated surfaces, such as electric resistance elements, hot water (hydronic) radiators, etc … Energy terms

Electric radiant heating — A heating system in which electric resistance is used to produce heat which radiates to nearby surfaces. There is no fan component to a radiant heating system. California Energy Comission. Dictionary of Energy Terms … Energy terms

Heating — may refer to: *HVAC: Heating, ventilation and air conditioningHeating devices, or systems: *Block heater, or headbolt heater, an electric heater that heats the engine of a car to ease starting in cold weather *Boiler *Cathode heater, a coil or… … Wikipedia

heating — I Process of raising the temperature of an enclosed space. Heat can be delivered by convection, radiation, and thermal conduction. With the exception of the ancient Romans, who developed a form of central heating, most cultures relied on direct… … Universalium

Canadian condo complex focuses on luxury, features radiant heating system

A condominium complex in Halifax, Nova Scotia, has been renovated to include new energy efficient technology in order to limit long-term energy consumption and spending, according to the Halifax Chronicle Herald.

The news source reported that the new condos will come complete with an option to create a unique design for each res >radiant heating system. Radiant heating systems maximize the efficiency of heat delivery through a subfloor system, as the technology warms a room more evenly, and cost-effectively than conventional heating. Along with a more effective delivery of heat, the radiant system provides a clean atmosphere, operating without radiators, heating ducts and air vents that can all trap and distribute particles in the air.

The long-term heating costs for a residence are lowered through the adoption of a radiant heating system, and this is why the technology is being used in many new developments. The condominum complex in Halifax utilizes the system to provide its owners with an efficient warmth for the cold winter months Canada is known for.

Owners and developers from the project noted that the unique design of the condos and the relation to the nearby town help to make the residences worth the move up north.

“[This project] is simply the coolest condo project I have ever worked on,” the development’s real estate representative, told the news source. “Combining all the benefits of a really high-end, new construction building with old world charm, all with only 38 residential units. And the views from the roof are truly spectacular.”

RPA Refutes Canadian Radiant Study

A recent Canadian radiant heat study claimed that homeowners with radiant floors do not set their thermostats any lower than homeowners with other types of heat, according to the Canada Mortgage and Housing Corp.

But not so fast, said Lawrence Drake, executive vice president of the Radiant Panel Association. «The study is completely unscientific and very limited,» Drake said. «It’s a valid issue, but not a valid study, and the matter is a lot more complicated than the study would have you believe.»

Last winter, the CMHC sent out a researcher to visit 50 Nova Scotia homes with hydronic radiant heat and 25 comparable homes with other types of heat (mostly forced air, but some hot water baseboard). The visits were conducted during daylight hours on the weekend.

According to the research, the thermostat setting for the 50 homes with radiant heat averaged 68.7 degrees F. Meanwhile, the thermostats for the 25 homes with other heating systems averaged 67.6 degrees F.

«Years ago, we published a consumer brochure that repeated the industry claim that you can set your thermostat lower and reduce your heating costs,» said Don Fugler, senior researcher for the CMHC. However, Fugler fielded plenty of calls questioning the validity of the claim. «This sounded like a supposition as opposed to anything that had been tested. We tested the hypothesis, and it didn’t hold true.»

Drake pointed out that the study does not take into account that there could be a two- to three-degree variation in actual ambient temperature than what the thermostat actually reads. «You can’t just look at what the dial says,» he said.

Drake added that the study did not look at other important aspects of radiant, such as comfort levels. He also says that force of habit may be the main reason thermostats are stuck at higher settings. «Although homeowners with radiant systems could set their thermostats lower, they often don’t since they were uncomfortable at a lower setting with forced air,» Drake said. «Now they set it at the same level as before, and they’re extremely comfortable.»

Fugler defended his work, and said the research is scientifically valid and only sought to address whether thermostats in radiantly heated homes were, indeed, set any lower than homes without radiant infloor heat. He admitted that thermostat error does exist and even told us he had recently discovered that one of his own home’s thermostats read two degrees lower.

«With this size of a sample, however, it would be unlikely that there would be any tendency for the thermostats in those 50 radiantly heated home to read higher and the thermostats in the other 25 homes to read lower, or vice versa,» Fugler says.

Claims of comfort are worthwhile attributes to research, he said, and added that there is plenty of scientific and anecdotal evidence to back up such assertions. For example, Fugler mentioned a Canadian governmental housing agency active in building homes with radiant heat that found «homeowners love it, and the homes had better resale values on account of the radiant systems.»

Radiant Heating and Radiant Heaters Types

Radiant heating systems, particularly in industrial and commercial facilities around the world since the 1950s finds itself in the application area, it is also used in our country since the early 1990s.According to the principles of radiant heating system it is different from conventional heating systems.heat transfer in conventional heater “convection (convection)” media made by air increased thermal comfort by introducing a certain temperature.However, if the radiant heater, another type of heat transfer to “radiation” they heat the body by emitting.heat transfer by radiation; At finite temperature (0ВєK above) every body, because of the movement of electrons changes in the structure of atoms or molecules emit electromagnetic waves. Increased body temperature, atoms and electromagnetic wave of violence that increase the movement of molecules that heat radiation is also increasing off the first radiation effects in places in the application is felt and heat energy received by the convection of air heated body in the later venue. This basic principle raises many advantages, especially in high places and outdoor heating. where hot air is blown heated, hot air, cold air because there is a less density accumulates on the roof rises environment. In this case, the height increases, increasing the air temperature at the base is increasingly difficult.

The working principle of radiant heaters is very simple. With the help of burning gas in the burner chamber vacuum fan moves the heat in special quartz tube, leaving coated pipe. Located on the heat emitted by the pipe is transmitted to the ground reflected by the reflector help.

It is the most beautiful example of the Earth and solar radiation heat transfer path

Radiant Heaters Types

Radiant heaters practice can be examined under two main groups:

Low Intensity Radiant Heaters:

Radiant heater surface temperatures below those density between 200 and 815 В° C radiant heatersВ called [RG]. wavelengths of the radiation emitted from the surface of this heater may vary between 2 and 10 microns. various types of pipe heaters (gas-fired) and household-type electric heater is located in this category.

Pipe type radiant heaters are examined under two main headings:
1. One of the pipe burners
2. Multi-burner is piped

One burner is Tube Radiant Heaters:

TSE Turkish Standards Institute standard EN 416-1 No. 1 mentions only burners Radiant heating systems. One burners heaters, such as plain and types grouped under two main headings. Straight seen in Figure 3, the radiant heater in a vacuum. Burner (1), Pipe (2), reflective reflector (3), and Vacuum Fan (4) The working principle of this device consists of four main parts, including the following:

One type of flat tube radiant burners

1. The device initially works and creates a vacuum inside the vacuum fan when executed by sucking air in the radiant tube inside throw out.
2. The vacuum level of the vacuum switch modules connected to the ignition of the burner when it reaches a certain value feel it and opens the ignition circuit.
3. The ignition circuit is switched on, the burner’s electronic solenoid valve allows for the gas supply and the ignition electrode begins the era of the device at the same time.
4. occurred in the burner flame when the gas-air mixture ratio to an appropriate level. It is absorbed by the vacuum fan at the end of the flame system.
5. burnt gas which has to cover all the radiant tube to get out of the system, are absorbed by heating pipes.
6 heat pipes begin to emit radiation. If the rays are reflected from the surface down through the pipe of the reflector.
7. Thus, the gas is burned to heat the radiant tube springs out and converted to a radiation objects at the bottom of the device, people, machines, floor etc. whereby hot.

Flat type heaters, when heated space all and devices may have the temperature distribution is appropriately positioned. In fact, in this case the homogeneous heat distribution is not as important as spot heating.

Total installed capacity in 30 minutes to reach the venue is cold comfort temperature should be selected. Changes in temperature distribution in a system of this design is not disturbing. In addition, the direction of the burner device to distribute heat evenly and is very heat loss or, if it is equivalent to the door or window side, the more uniform temperature distribution has been carried out.

The differences in the distribution of flat type radiant heaters heat gave rise to the development of the tube-type radiant heater that resolves this disadvantage. The main difference of the U-type heater, the heater is formed into a flat type with a double row of tubes with a single row of radiant tubes.

Examples of the types of radiant tube

It is a vacuum tube-type radiant heater, fan, but still depends on the final pipe, eliminating device is a two-storey flat heater comes alongside the hot pipe surface with the cold pipe surface. This situation continued throughout the entire heating surface. For example the hot pipe surface 650ВєC in a heater, the cold surface is about 120 В° C, and it is from side to side surface side. The next pipe pipe surface temperature of 350ВєC, which is still in the same heater is around 350ВєC. This feature compared to straight tube-type heaters are radiant heaters allows them to have a more uniform heat distribution.Therefore, the heaters are able to better respond to the needs of direct and local heat.

Multi-burner is Tube Radiant Heaters

Turkish Standards Institute TSE EN 777-1, TS-EN 777-2, TS-EN 777-3 and TS EN 777-4 standard include multi burner is No. Type Radiant Tube Heaters. This standartlartd 4 types of radiant heaters very burners are mentioned:

D Type Very burners heating: you’ve finally found a fan in the fan There were no common line they are affiliated with a secondary burner and all connected devices with even just one burner.

E-type multi burners heating: Each burner with its own fan but are not connected to other fans on the common line and each sub-system are connected even just a burner.

F-type multi burners heating: each with its own fan and a burner connected to a common fan is located at the common line and each sub-system are connected even just a burner.

H-type multi burners heater: more than one burner on the same line as the common fan with a line attached to two or more burners and systems used for each secondary line.

mentioned above in many burners, depending on the type of system, a number of advantages over single burners of said device. However, H-type devices in productivity and low fuel consumption, they come to the fore. exhaust gas is used for multiple burners throughout the pipeline H type device temperature can be reduced so as to maximize the efficiency of the system. It can also be used in relatively small capacity burners at frequent intervals, the temperature distribution becomes more uniform.


High-Intensity Radiant Heaters

Radiant heaters with a surface temperature of 815 В° C and over High Density called radiant heaters.wavelengths of the beams emitted from the surface of high density heater is between 1 and 6 microns. Ceramic plate heater (natural gas), ceramic plates garden, patio and terrace heaters and a high surface temperatures, especially industrial type electric radiant heaters are included in this category.

Ceramic plate radiant heaters, open flame can be also called in the literature. Open flame is due to the form of expression of these devices spread my heat. Devices operate in the manner described below:

1 is sent to the inside by means of a venturi jet orifice and the gas causes the pressure drop across the venturi. This decline is due to air is sucked from the atmosphere into the vacuum effect occurs within and devices.
2. In accordance burn rate of the gas jet Venturi structure is designed to absorb air. Whereby the fuel mixture at room ideal combustion to obtain access to air gas conditions.
3. It reaches blending ceramic plate and tries to escape through the holes in the plates. It burned in exactly where you go out to create a short flame in the ceramic surface. So each hole actually works like a burner.

Ceramic Plate Radiant Heaters

4. Increase the temperature of the ceramic on ceramic surfaces and hence short flame causes the redness. My warm thanks to glowing ceramics begins to spread and reflectors are also directed to the lower level of the device.
5. Device in some heaters so as to increase the efficiency of isolation and thermal inertia of the reserve which steel wire cages may be used.

Radiant Ceramic Plate

Comparison of Low and High Density Heater

I hotter heat transfer with the heat of the surface where the temperature is proportional to the fourth power and surface area. That is, a body surface area is kept constant when removed the surface temperature of the second layer with the heat energy emitted from that surface, the full 16-fold increase. by keeping the temperature constant, and when the surface area taken two times hotter violence also leads to a 2-fold. When the same capacity with both high density and low density heaters analyzed, low intensity radiant heaters have a lower surface temperature than the high density devices. In this case, the heat emanating from the surface of the unit, it means a lower energy. However, the surface areas of low density unit is much higher than the high density devices.If the low and high density are two different devices of the same capacity is exceeded at the same height, low density heater emits energy more space, while a smaller area of high density heater may raise to a higher temperature. These two features are to the fore in different application areas. If all the desired space to be heated, that will be a general warming in this case, it may be more efficient to choose radiant tube heater that can cover more area. The high-density devices “spot” called heating, regional, able to respond better to direct heat needs in places where poor local needs and isolation. In contrast, from application to application and device use may vary depending on the user’s preference. devices for spot heating of low density and high density device likewise also possible to use general heating purposes.

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Application of Radiant Heaters

Gas-fired radiant heaters in the first place for various needs in today if they have developed can also be used for industrial applications. In practice, tubular heater of 4 m, while the open flame heaters are mounted at a height of less than 5 m are not preferred because it causes a feeling of overheating.

Radiant heaters, especially the big ones are difficult or impossible with traditional methods of heating and high places, the places where isolation is bad, can provide heating quite successfully in a half-open or outdoor heating applications. Factories, workshops, service stations, churches, stadiums, gymnasiums, warehouses, hangars, fair exhibition halls, greenhouses, livestock farms are shown as examples.

• boiler does not require and equipment.
• Provides a minimum temperature difference between the floor and ceiling.
• Easy installation and low cost of investment pays for itself in a short time.
• it can be heated to different temperatures in different areas.
• Natural gas LPG, LNG and diesel fuel is possible to use options.

space heating with hot air and radiant heaters

• How the above table in the space left by the heated air rises in the area heated by hot air you can see the emergence of their losses. heating warm air moves away from the desired collected above ground.
• Radiant floor heating system in the right table up in the heat of the radiant heating system it is possible to clearly see how the main focus. heating temperature directly sends the desired floor.
• can not be air circulation do not carry dust and particles.
• that these systems provide many advantages compared to conventional blown system and especially before investing significant savings in operating costs later. (50% savings)
• provide a healthy environment with comfortable heating.
• Practical application shows that, in order to 1.8m air temperature at a height 18Вєc’y to the ground in a structure 10 m in the air blast system sulky six temperature while finding about 30Вєc’y, the temperatures in buildings that use radiant heater is around 21ВєC.

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Русскоязычный информационно-болтологический форум

Radiant Floor Heating кто-то использует?

Moderator: Komissar

Radiant Floor Heating кто-то использует?

Post by IRISHA74 » Thu Dec 29, 2005 7:23 pm

Хочу установить в нижних комнатах под паласы, чтоб холодом не тянуло. Мне интересно знать ваше мнение о прочности, надёжности и камфортабельности.
Ах, да ещё и никак не могу подсчитать эти фиты и перевести их в ярды, чтоб подсчитать расходы.

Re: Radiant Floor Heating кто-то использует?

Post by thinker » Thu Dec 29, 2005 7:26 pm

1 ft = 0.3333 yard

Re: Radiant Floor Heating кто-то использует?

Post by alex_127 » Thu Dec 29, 2005 9:12 pm

А где вы нашли такой что можно под ковер ставить? Все что я видел под ламинат/плитку или под субфлоор.

Re: Radiant Floor Heating кто-то использует?

Post by IRISHA74 » Thu Dec 29, 2005 10:40 pm

1 ft = 0.3333 yard

это понятно, но вот когда расчёт идёт в квадратных фитах получается несостыковочка. А ещё если добавляются инчи или просто ‘ или » у меня руки опускаются считать!

Re: Radiant Floor Heating кто-то использует?

Post by IRISHA74 » Thu Dec 29, 2005 10:42 pm

А где вы нашли такой что можно под ковер ставить? Все что я видел под ламинат/плитку или под субфлоор.

ну вот на том сайте как раз и утверждают, что толщина проводов всего четверть инча т.е. подходит даже под карпет.

Post by vaduz » Fri Dec 30, 2005 9:54 am

Post by IRISHA74 » Tue Jan 03, 2006 11:04 am

Но там нигде ничего такого не сказано
И инспектор дома говорил, что можно под ковёр.

Post by vaduz » Tue Jan 03, 2006 1:10 pm

Но там нигде ничего такого не сказано
И инспектор дома говорил, что можно под ковёр.

Посмотрю в инструкции, если еще не выкинул, мы в ванной установили.

Post by IRISHA74 » Tue Jan 03, 2006 2:25 pm

разобралась!
Если под паласы, то надо цементировать!
Эту историю с географией мы отметаем!

Но можно под floating floor.
В связи с этим вопросы. вопросы.
Вот тут нашла бамбуковый:
http://cgi.ebay.com/BAMBOO-CLICK-Floors . dZViewItem
Никак не могу подсчитать Sq feet опять же

Сколько нужно купить этих коробок для, скажем, 300 Sq feet?
Неужели всего 10?!

А на сколько хорош этот бамбуковый?

Post by Chu » Wed Jan 04, 2006 7:31 am

Посмотрите здесь
Специально для установки под карпет

Post by Artemk » Wed Jan 04, 2006 9:13 am

Для перевода удобно использовать гугл:

Например написать: 3 sq ft in sq yd

и получить ответ: 3 (sq feet) = 0.333333333 sq yd

2 ft 3 in x 2 ft 5 in in sq yd = 0.604166667 sq yd


Post by vaduz » Wed Jan 04, 2006 9:17 am

IRISHA74 wrote: разобралась!
Если под паласы, то надо цементировать!
Эту историю с географией мы отметаем!

Но можно под floating floor.

А я инструкцию посмотрел.
Категорически запрещено ставить под carpet, hardwood, vinyl.
Только в цемент.
Правда у нас другой фирмы, хоть и очень похоже.

Кстати, может быть засада: у нас к управляющей коробке с кнопочками (термостат) можно подключить два коврика, не больше. т.е. если вы возьмете 10 ковриков, то придется ставить 5 термостатов. Насколько я знаю, размеры ковриков бывают разные, но мы изучали вопрос для небольших пространств.

Post by IRISHA74 » Wed Jan 04, 2006 6:38 pm

Radiant heating systems

    Branden Moody 3 years ago Views:

1 2009 Radiant heating systems An energy and cost saving method of heating, that provides comfort to a room, much the same way as the sun warms the earth. Radiant heating and cooling panels offer a number of advantages over conventional systems and can easily be modified to fit your needs and specifications. Unit 1 & 2 Smith Forge Ind. Est. North End Road Yatton Bristol BS49 4AU Tel: +44 (0) Fax: +44 (0) Web:

2 PRICETWA 2 Contents Radiant Heating Panel Technology. Chapter 1 Radiant Panel Technology What is it. Page 4 How is it different from Conventional Radiation. Page 4 Why are the panels in the ceiling. Page 5 Are Radiant Panels New. Page 5 What are some of the advantages of this technology. Page 6 What about cold feet.warm head. Page 7 Where is the technology used. Page 8 Where can I find out more about radiant ceiling panels. Page 9 Testing. Chapter 2 Designing with Radiant Panels. Chapter 3 Linear Heating Panels. Chapter 4 Description. Page 15 Linear Panel Specifications. Page L-24-W T-Bar mounted linear heating panel. Page 18 L-30-W Plasterboard mounted linear heating panel with integrated access. Page L-30-2-W Plasterboard mounted linear heating panel without integrated access. Page L-35-5-W Surface wall mounted linear heating panel. Page L-36-SQ-W Square edged free hanging linear heating panel. Page L-36-BN-W Round edged free hanging linear heating panel. Page L-39-W Wall mounted gymnasium linear heating panel. Page Operation and maintenance. Page 31 Security Heating Panels. Chapter 5 Description. Page 33 Outputs. Page 34 Access panel and piping detail. Page 35 S-6-W Flush mounted security heating panel. Page 36 S-7-W Surface mounted security heating panel. Page 37 S-8-W Angle mounted security heating panel. Page 38 S-10-W Surface mounted security heating panel for high risk areas. Page 39 Operation and maintenance. Page 40

3 PRICETWA 3 1. RADIANT HEATING PANEL TECHNOLOGY

4 PRICETWA 4 Radiant Panel Technology. What Is It? Radiant panel ceiling systems are similar to other air-water HVAC systems with respect to the arrangement of components. The important difference is that room thermal comfort is maintained primarily by radiant heat transfer instead of convective heat transfer (as is the case with tube and fin baseboard radiation). The significance of this is best illustrated by an analogy: You are walking outside on a brisk fall day in bright sunshine. Suddenly the sun goes behind a cloud. Although you feel an immediate chill, the outside air temperature did not change in the instant that the sun was hidden; it is just that you were, until that instant, bathed in a warming radiant field. Radiant ceiling panels create a radiant field, similar to the sun’s but of lower intensity, inside the occupied space. This radiant field heats the solid objects within the space without appreciably heating the room air. In addition, since most interior finishes have high emissivity, all surfaces within the room absorb and reradiate the heat to give a generally even warming effect. How Is It Different From Conventional «Radiation»? Heat may be transferred by conduction (warmth transferred by objects that are touching each other), or convection (heat that is carried from a warmer to a cooler body by an intermediate fluid such as air) or by radiation. Most conventional tube and fin «radiators» are in fact, convectors. They heat a space by warming the air that passes by the heated fins. This air, now warmer than the surrounding air, rises due to buoyancy. This is known as free convection. Where the air is moved past the fins by a blower or fan it is called forced convection. In either case the idea is the same, to compensate for perimeter heat losses by circulating warm air within the space. By contrast, between 75 and 90 per cent of the energy from a radiant panel is propagated by thermal radiation. Thermal radiation is an electromagnetic radiation propagated due to a difference in temperature. Therefore, the heat is transferred to all bodies «seen» by the panel that are at a lower absolute temperature than the panel itself.

5 PRICETWA 5 Why Are The Panels In the Ceiling? It is often asked «Why put the panels in the ceiling? Heat rises, doesn’t it?» The answer is no, heat does not rise. Warm air rises. The panels are most effective in the ceiling because from there, they are best able to «see» the objects in the room. Again, for clarification, cons s Administration Hospitals and, in the last 10 years, over 80% of the new hospitals constructed in the provinces of Western Canada have employed radiant panel ceiling heating systems. 1 Holman, J.P.: Heat Transfer, McGraw-Hill Book Company, New York, 1981

6 PRICETWA 6 What Are Some Of The Advantages Of This Technology? The principal advantages of radiant panel heating systems are listed in Chapter 6 of the 1992 ASHRAE 2 (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.) Handbook as: 1. Because not only indoor air temperature, but also mean radiant temperature, can be controlled, total human thermal comfort may be better satisfied. Additionally, because the operative temperature for required human thermal comfort may be maintained by primarily controlling the mean radiant temperature of the conditioned indoor space, drybulb air temperature may be lower in heating or higher in cooling, reducing sensible heating and cooling loads. 2. All pumps, fans, filters and so forth can be centrally located, simplifying maintenance. 3. Cooling and heating can be simultaneous, without central zoning or seasonal changeover when three and four pipe systems are used. 4. In terms of simple payback period, ceiling cooling panels and chilled beams have the highest energy savings potential. (DOE 2002) 5. Noise associated with fan-coil or induction units is eliminated. 6. Supply air quantities usually do not exceed those required for ventilation and dehumidification. 7. Draperies and curtains can be installed at the outside wall without interfering with the heating and cooling system. 8. The modular panel concept provides flexibility to meet changes in partitioning. 9. A 100% outside air systems may be installed with less severe penalties in terms of refrigeration load because of reduced air quantities. 10. Wet surface cooling coils are eliminated from the occupied space, reducing potential for septic contamination. 11. Comfort levels are better than those of other conditioning systems because radiant loads are treated directly and air motion in space is at normal ventilation levels. 12. Mechanical equipment is not needed at the outside walls, simplifying the wall, floor and structural systems ASHRAE Handbook HVAC Systems and Equipment. Chapter 6 pp

7 PRICETWA 7 What About Cold Feet. Warm Head? Research and testing of radiant panels was carried out in the mid 1950’s by ASHRAE (actually called ASHVE at that time). Although this corpus of research is over 35 years old, wives tales about radiant panel technology still persist. Cold feet? Hardly. Tests have shown that the floors in a room heated by a radiant panel ceiling exhibit temperatures 1 to 2 o C (3 to 4 o F) above the ambient air temperature and actually provide a source or reradiated heat themselves. In fact, where downdrafts from cold walls or glazing present design challenges with respect to occupant comfort, radiant panels provide a solution. The ceiling panels warm the wall or window surfaces by direct transfer of radiant energy, significantly increasing the temperature of each. It has been found that even under extreme cold wall conditions (27 o F, -2.7 o C), the air velocities are non-draft in nature (less than 50 fpm or 0.25 m/s) 3. And if your head is hot, don’t blame it on your radiant panel ceiling. Typically, radiant panel surface temperatures are 170 to 185 o F (about 82 o C). This can cause the directional mean radiant temperature (DMRT) to be 16 to 20 o C (30 to 40 o F) above the ambient air temperature. By contrast, on a sunny day, the DMRT outside is 30 to 40 o C (50 to 70 o F) higher than the ambient air temperature 4. So, if you enjoy being out in the sunshine, you will enjoy the indoor warmth of a radiant panel ceiling. 3 Schutrum and Min, «Cold Wall Effects in a Ceiling-panel Heated Room». ASHVE Transactions, vol. 63, Fanger, P.O.: Thermal Comfort — Analysis and Applications in Environmental Engineering. Danish Technical Press, Copenhagen, 1970.

8 PRICETWA 8 Where Is This Technology Used? Radiant panel technology is applicable in a wide variety of building environments, most notably it is well suited for hospital patient rooms and laboratories. Radiant panels provide a silent, draft-free, thermally stable environment for sedentary patients and require no mechanical equipment or bacteria/virus collectors in the heated space. This is of extreme importance in a hospital or laboratory setting where maintenance of an aseptic environment is crucial. It has been shown that the elimination of baseboard convectors alone can reduce bacterial growth in a space by over 40% 5. Radiant panel ceiling systems are not just for hospital and laboratories. The leasable space reclaimed by eliminating 6 to 8 inches of baseboard convectors around the entire perimeter of every floor of an office building can mean significantly increased earnings for the commercial owner. Also, with ceiling panels, leased areas can be easily re-partitioned since there is no wall fin to build around. Most importantly, with no mechanical equipment in the occupied space, radiant ceiling panels are almost maintenance free. Radiant panels can also be the ideal retrofit. In areas where lay-in acoustic ceiling tiles are used, radiant panels can provide heat that is architecturally invisible. With the hot water supply piping already in the ceiling space, the panel installation is very straightforward: 1. Remove an existing acoustic ceiling tile. 2. Make two plumbing connections to the hot water supply and hot water return pipes. 3. Lay the radiant ceiling panel in the same T-Bar opening. There are no risers to run and no cabinets to paint. In fact, once silk-screened to match the pattern of the existing ceiling tiles, the radiant heating panels are almost indistinguishable from the surrounding ceiling design. 5 Byar, Brown and Shaffer, «Radiant Ceilings tested for Bacterial Count», The Modern Hospital, June 1966.

9 PRICETWA 9 Where Can I Find Out More About Radiant Ceiling Systems? Design guidelines for radiant panel ceiling systems are included in this catalogue and in the 2004 ASHRAE HANDBOOK (Chapter 6). Also, radiant panel product information and design assistance is available from the manufacturer and agents throughout Canada and the U.S. For further information contact our nearest agent: Price Twa Unit 1 Smiths Forge Industrial Estate North End Road Yatton Bristol BS49 4AU United Kingdom Tel: (0) Fax: (0) Web: Innovent (Scotland) Limited Suite 102 St James Business Centre Linwood Road Paisley PA3 3AT Tel:

10 PRICETWA TESTING

11 PRICETWA 11 Testing All Price Twa radiant panels are independently tested for heat output by B.S.R.I.A. in Bracknell, Berkshire, England (EN442 testing) and the University of Stuttgart in Germany (EN14037 testing). The latest tests have been conducted as of November 2006 with written documentation. Objective The objective was to determine the thermal performance of every Price Twa radiant panel in the heating mode. Testing Determination of the thermal output to EN Differing from the requirements in EN14037 the following conditions applied: The inner surface of the test room ceiling was covered with a joint-sealed thermal insulation of 100mm thickness. The top parts of the inner test room surfaces (height 360mm) were covered with a joint-sealed thermal insulation of 100mm layer thickness. Lower test temperature range Measuring points for the reference temperature and for air temperatures. For the L-24-W radiant panel a standard t-bar ceiling gr >

12 PRICETWA Designing with radiant panels

13 PRICETWA 13 Designing with radiant panels Price Twa offer a free design service for large projects: communication via allows us to overlay panel layouts onto customer s drawings. All we require are building layout plans showing pipe runs and ceiling layouts. The returned design will show panel size, position and heat output. Pressure loss calculations can also support the design if required. This offers not only optimum panel selection in terms of performance and cost, but ensures that the delivered product integrates into the whole construction of the building. Price Twa have a clear objective: to supply products to site which are quick and simple to install and will give years of trouble-free service. Through consultation at all stages of the project and careful, detailed design, the radiant panels which arrive at site are finished and ready to install. Experience has shown that ceiling or mechanical services contractors can fit the panels themselves, allowing much greater control and flexibility on site, and of course minimising costs. Price offer a full installation service if required. Please contact us for further details. Sample Drawing

14 PRICETWA Linear Heating Panels

15 PRICETWA 15 Description Linear panels are an established approach to radiant heating. The linear panel is an extruded aluminium radiant heating strip that provides exceptionally high heat transfer. Linear panels are available in virtually any width and length up to a maximum of 4800mm. This product, while offering an up-to-date visual appearance, is suitable for both ceiling or wall mounting. Linear panels are also available with a range of mounting accessories providing flexible setup. Advantages The system is easily designed into any heating scheme with few dimensional constraints. Installation is straightforward and, as found through independent tests, the heat output of linear panels is equal to or better than other radiant heating products. Applications Linear panels can be used in hospitals, nursing homes, daycares, commercial office developments, schools, museums, security facilities, airports, churches, banks, condominiums, laboratories, swimming pools, factories and workshops. Material Specification The aluminium planks incorporate a tube saddle channel as an integral part of the profile. The copper tube is seated into this channel and held in direct thermal contact with the extrusion. A non-hardening heat paste between copper and aluminium ensures even heat distribution to the active panel providing overall thermal efficiency. Panel planks are tongue-and-groove to provide a clean joint longitudinally. They are held together using a special clamping system. Dimensions and Weight Linear panels can be provided in single panel lengths of up to 4200mm and multiple panel lengths of up to 30000mm. Aluminium linear panels have a dry weight of 8.38 kg/m² and an operating weight of kg/m² which should be used when calculating the requirements for clamping and suspension components. Materials of construction Pipework: Panels: Panel Joint Strips: Panel Suspension Clips: Pipework Clips: Cross Brace: Colour: Suspension System: Insulation: 16mm o.d. copper tube. Extruded aluminium planks with profile face design. Cadmium or zinc-plated steel springs. Cadmium or zinc-plated steel springs. Cadmium or zinc-plated steel springs. Extruded aluminium 38mm x 19mm x 1.6mm Standard colour is an off-white electrostatic polyester powder coating. Standard t-bar or drywall installation. The panels can be suspended with or without a frame for custom applications. R-foil supplied and factory installed by Twa Panel Systems Inc.

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16 PRICETWA 16 LINEAR RADIANT PANEL SPECIFICATION 1.0 General 1.1 Scope of Work.1 To provide a complete extruded linear panel system as per plans and specifications. 1.2 Approved Equals.1 Manufacturer: Twa Panel Systems, Inc..2 Alternate manufacturers will not differ from Twa Panel Systems, Inc. with regard to number of tube rows, water pressure drops, piping connections and such features as surface finish and cleanability. 1.3 Quality Assurance 2.0 Product.1 The mechanical contractor shall furnish all labour, materials, tools, equipment, appliances and services necessary to deliver and install all radiant panels as defined. The mechanical contractor will be solely responsible for providing radiant panels dimensions to the radiant panel manufacturer..2 Supplier shall submit complete shop drawings showing layouts, fixing details and piping details of all areas where radiant panels are indicated. These drawings shall be coordinated with, and interference cleared with other trades. 2.1 Linear Radiant Panels.1 Constructed of extruded aluminium planks..2 Width and number of tubes as per design specifications..3 Tube saddle shall be an integral part of the aluminium plank..4 Each panel shall be factory supplied in standard white polyester powder coat..5 Circulation tubing shall be 16 mm (5/8″) O.D. round tubing mechanically fastened to the plank. A non-hardening heat transfer paste is required between the tubing and the aluminium saddle..6 Planks shall interlock using tongue and groove connection and be held together using aluminium or steel cross channels with spring clips..7 All plank interlocking to be done at the factory with return copper coil factory installed prior to going on site. No site assembly permitted..8 Copper coil is to be continuous. If the manufacturer cannot supply a continuous coil, then return bends must be factory installed and a pressure test report must be submitted to the Mechanical Consultant..9 The length of the panels shall be based on lengths supplied by the Mechanical Contractor. The factory to allow for expansion before the final cut. No site cutting allowed..10 Panel performance shall be that of Frenger linear ceiling panel manufactured by Twa Panel Systems, Inc. of Nisku, Alberta. Capacities of installed panels shall be as called in the specifications and shown on the drawing.

17 PRICETWA Mechanical Equipment Schedule 3.1 Linear Radiant Panels 4.0 Installation.1 Manufacturer: Twa Panel Systems, Inc..2 Model: Linear.3 Performance: BTUH per lineal foot — Watts per lineal metre.4 W ) foil backed insulation after connection and testing of panels is complete. Insulation by responsible trade..6 All system piping shall be thoroughly cleaned and flushed before connecting to radiant panels..7 All radiant panels to be pneumatically tested as per Engineer’s specifications, before being filled..8 Minimum of one hanger wire for safety and seismic restraint per crossbrace. Minimum of 2 per panel..9 All radiant panels shall be installed by personnel wearing clean white gloves.

18 PRICETWA 18 T-Bar mounted linear heating panel Reference: L-24-W Description The L-24-W linear radiant panels have been designed to fit in a standard t-bar ceiling grid. Panels can be manufactured in one piece up to a length of 4200mm (4195mm) and are supplied with t-bar fixing clips to hold the panels into the grid, insulation, touch-up paint and white cotton gloves (for installation). It is recommended that all panels are fitted using wire hangers so that the ceiling grid doesn t have to support the full weight of the panels. Linear output table Width (mm) #Tubes (Passes) Mean Water Temperature ( C) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. 600 x 600 (595 x 595) panels are only available with 4 tube passes. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

19 PRICETWA 19 Plasterboard mounted linear heating panel with integrated access panel Reference: L-30-W Description The L-30-W linear radiant panels have been designed to fit flush in a standard plasterboard ceiling and include an integrated access panel for access to the flow and return connections. Panels can be manufactured in one piece up to a length of 4200mm and are supplied with fixing frame, insulation, touch-up paint and white cotton gloves (for installation). Panel frames are to be fixed to independent supports (by others) on the back of the plasterboard ceiling. The panels then drop into the frames like they would in a t-bar ceiling grid. Installation Instructions Framed panels by Price Twa require careful handling and installation. The opening must be parallel and square. Do not over-torque screws to compensate for improper opening preparation as this will distort the panel frame. The required frame & panel opening is indicated on the panel schedule. Allowances will be made for the frame & panel to fit this size of opening. The radiant panel must be held back a minimum of 50mm from all walls.

20 PRICETWA 20 L-30-W Continued Linear output table Width #Tubes Mean Water Temperature ( C) (mm) (Passes) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. 600 x 600 panels are only available with 4 tube passes. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

21 PRICETWA 21 Plasterboard mounted linear heating panel Reference: L-30-2-W Description The L-30-2-W linear radiant panels have been designed to fit flush in a standard plasterboard ceiling. Panels can be manufactured in one piece up to a length of 4200mm and are supplied with fixing frame, insulation, touch-up paint and white cotton gloves (for installation). Panel frames are to be fixed to independent supports (by others) on the back of the plasterboard ceiling. The panels then drop into the frames like they would in a t-bar ceiling grid. Installation Instructions Framed panels by Price Twa require careful handling and installation. The opening must be parallel and square. Do not over-torque screws to compensate for improper opening preparation as this will distort the panel frame. The required frame & panel opening is indicated on the panel schedule. Allowances will be made for the frame & panel to fit this size of opening. The radiant panel must be held back a minimum of 50mm from all walls.

22 PRICETWA 22 L-30-2-W Continued Linear output table Width #Tubes Mean Water Temperature ( C) (mm) (Passes) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. 600 x 600 panels are only available with 4 tube passes. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

23 PRICETWA 23 Surface wall mounted linear heating panel Reference: L-35-5-W Description The L-35-5-W linear radiant panels have been designed to be surface wall mounted and can be supplied with or without an access panel. Panels can be manufactured in one piece up to a length of 4200mm and are supplied with fixing brackets, insulation, touch-up paint and white cotton gloves (for installation). Options L W = External Connections L W = Internal Connections L W = Access Panel

24 PRICETWA 24 L-35-5-W Continued Linear output table Width #Tubes Mean Water Temperature ( C) (mm) (Passes) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

25 PRICETWA 25 Square edged free hanging linear heating panel Reference: L-36-SQ-W Description The L-36-SQ-W linear radiant panels have been designed to be free hung in spaces with no ceilings. A number of different suspensions can be used to mounted the panels including wire hanger, chains etc. Panels can be manufactured in one piece up to a length of 4200mm and are supplied with insulation, touch-up paint and white cotton gloves (for installation). When panel lengths are required over 4200mm then panels are butted together and flexible copper interconnectors are supplied to connect the panels together. 50mm aluminium cover strips are included to cover the joints where the panels butt together. Options Standard aluminium top covers Sloping aluminium top covers Surface mount brackets to mount the panels directly to the underside of a plasterboard ceiling

26 PRICETWA 26 L-36-SQ-W Continued Linear output table Width #Tubes Mean Water Temperature ( C) (mm) (Passes) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

27 PRICETWA 27 Round edged free hanging linear heating panel Reference: L-36-BN-W Description The L-36-BN-W linear radiant panels have been designed to be free hung in spaces with no ceilings. A number of different suspensions can be used to mounted the panels including wire hanger, chains etc. Panels can be manufactured in one piece up to a length of 4200mm and are supplied with insulation, touch-up paint and white cotton gloves (for installation). When panel lengths are required over 4200mm then panels are butted together and flexible copper interconnectors are supplied to connect the panels together. 50mm aluminium cover strips are included to cover the joints where the panels butt together. Options Standard aluminium top covers Sloping aluminium top covers Surface mount brackets to mount the panels directly to the underside of a plasterboard ceiling

28 PRICETWA 28 L-36-BN-W Continued Linear output table Width #Tubes Mean Water Temperature ( C) (mm) (Passes) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

29 PRICETWA 29 Wall mounted gymnasium linear heating panel Reference: L-39-W Description The L-39-W linear radiant panels have been designed specifically for gymnasiums and sports halls. With sloping tops and bottoms they have been built so that balls and shuttlecocks are unable to get trapped on the panels. Panels can be manufactured in one piece up to a length of 4200mm and are supplied with insulation, touch-up paint and white cotton gloves (for installation). When panel lengths are required over 4200mm then panels are butted together and flexible copper interconnectors are supplied to connect the panels together. 50mm aluminium cover strips are included to cover the joints where the panels butt together. Options 100mm deep 152mm deep Designed so that mains pipes can be hidden behind the panels

30 PRICETWA 30 L-39-W Continued Linear output table Width #Tubes Mean Water Temperature ( C) (mm) (Passes) Notes Outputs expressed in watts per linear metre and are based on 21 C room temperature. For every 1 C decrease in temperature below 21 C, the output increases by 2%. All outputs stated are radiant output only. All of the above panels have been tested to EN at the University of Stuttgart.

31 PRICETWA 31 OPERATION AND MAINTENANCE Linear panels are incorporated into a building’s heating systems and will remain trouble free provided the following procedures are followed and inspections performed during start up and maintenance. Operation Heating mains should be flushed prior to connection to the radiant panels. After connection, the hydronic system should be flushed again and then dry pressure tested to isolate any leaks. Any remaining air should be vented from the system and boiler temperature should be brought up gradually. Maintenance Apart from cleaning any strainers, little maintenance should be required on the pipework system. Any descaling of pipework should be carried out in the same way as for other hydronic heating systems. The panels are robust and should resist damage. If for some reason a panel has been damaged, the pipework should be inspected to ensure that no clips have been displaced and that extruded planks are still securely fastened. Cleaning The surface of linear panels is best cleaned using an industrial vacuum cleaner to remove dust. However, if the panels become soiled they should be cleaned using a damp cloth and mild detergent. Handling Price Twa linear panels are finished with a polyester powder coating. The panel surface must not come in contact with bare skin as perspiration or grease from an ungloved hand can potentially leave a mark on the panel. Installation personnel must wear clean white gloves when handling the radiant panels. Use a heat pad between the radiant panel and the copper pipe when making solder connections. Excessive heat can damage the paint finish. Touch-up Paint Ensure surface is clean and dust free. Using a fine grit sand paper (200 or greater) feather the edges surrounding the damaged area. Shake the spray bomb to ensure paint is thoroughly mixed. Maintaining a distance of 150 to 200mm give the damaged area a light dusting. Apply 3 to 4 light coats while increasing the area in which paint is applied with each pass. Let dry between coats.

32 PRICETWA Security Heating Panels

33 PRICETWA 33 Description Security panel is a new concept in radiant heating panels. It is a smooth faced radiant panel designed and constructed to form a building feature in accordance with architectural requirements. The product can be highlighted to form an architectural feature or more typically, blended into the structure to become a hidden source of efficient heating. Advantages Security ceiling panel system has proven to be the most economical method of heating high security areas. The security panel system is extremely flexible, yet is damage and vandal resistant while being virtually maintenance free. Applications Security panels are used for psychiatric assessment areas in hospitals, youth detention centres, prisons, holding cells, and military police stations. Material Specification The security panel system is a custom designed system that can be recessed or surface mounted in or on columns, walls or ceilings. Hot water supply temperature may be varied depending on the heating performance required. Insulation on the coil or inactive side increases radiant heat transfer. Panels are fabricated from steel or aluminium plates. Temperature control is as for other hydronic systems; panels may be controlled individually or in zones with control and shut off valves set outside secured areas for easier maintenance. Thermostatic controls allow areas of a building to be heated as desired. Controls are by others. Dimensions and Weight The panels are individually designed for a specific installation and are offered in widths of up to 1200mm with a maximum panel length of 3000mm. Weight of the operating system is dependent on the design of the system and material used but does not exceed 37 kg/m². Materials of Construction Pipework: 16mm o.d. copper tube. Pipework Attachment System: The coil is clipped to an extruded aluminium heat saddle using plated spring steel clips. The aluminium heat saddle is attached to the panel with steel studs. Heat transfer paste is used at the interface between the aluminium heat saddle and both the steel plate and the tubing. Panels: Paint Finish: Insulation: Steel or aluminium security panel system. The radiant panel can be supplied with edges formed to suit the individual installation. Non radiating «in fill» panels can be supplied to form a continuous covering for the wall, column or ceiling. Standard colour is an off-white electrostatic polyester powder coating. R-foil can be supplied and installed by the factory if specified.

34 PRICETWA 34 Outputs Steel Outputs Mean Water Temp ( C) Panel Output W/m Aluminium Outputs Mean Water Temp ( C) Panel Output W/m Outputs expressed in Watts/metre² of panel and are based on 21 C room temperature and 150mm coil centres. For every 1 C decrease in temperature below 21 C, the output increases by 2%. All of the above outputs are based on tests carried out to EN at the University of Stuttgart.

35 PRICETWA 35 Access panel and piping details Note: Due to weight of panels, two security panels supplied with access panel for ease of installation. Section A-A: Typical interface between panel and access panel.

36 PRICETWA 36 Flush mounted security heating panel Reference: S-6-W

37 PRICETWA 37 Surface mounted security heating panel Reference: S-7-W

38 PRICETWA 38 Angle mounted security heating panel Reference: S-8-W

39 PRICETWA 39 Surface mounted security heating panel for high risk areas Reference: S-10-W

40 PRICETWA 40 OPERATION AND MAINTENANCE Security panels are incorporated into a building’s heating systems and will remain trouble free provided the following procedures are followed and inspections performed during start up and maintenance. Operation Heating mains should be flushed prior to connection to the radiant panels. After connection, the hydronic system should be flushed again and then dry pressure tested to isolate any leaks. Any remaining air should be vented from the system and boiler temperature should be brought up gradually. Maintenance Apart from cleaning any strainers, little maintenance should be required on the pipework system. Any descaling of pipework should be carried out in the same way as for other hydronic heating systems. The panels are robust and should resist damage. If for some reason a panel has been damaged, the pipework should be inspected to ensure that no clips have been displaced and that extruded planks are still securely fastened. Cleaning The surface of linear panels is best cleaned using an industrial vacuum cleaner to remove dust. However, if the panels become soiled they should be cleaned using a damp cloth and mild detergent. Handling Price Twa security panels are finished with a polyester powder coating. The panel surface must not come in contact with bare skin as perspiration or grease from an ungloved hand can potentially leave a mark on the panel. Installation personnel must wear clean white gloves when handling the radiant panels. Use a heat pad between the radiant panel and the copper pipe when making solder connections. Excessive heat can damage the paint finish. Touch-up Paint Ensure surface is clean and dust free. Using a fine grit sand paper (200 or greater) feather the edges surrounding the damaged area. Shake the spray bomb to ensure paint is thoroughly mixed. Maintaining a distance of 150 to 200mm give the damaged area a light dusting. Apply 3 to 4 light coats while increasing the area in which paint is applied with each pass. Let dry between coats.

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41 PRICETWA 41 Price Twa Unit 1 Smiths Forge Industrial Estate North End Road Yatton Bristol BS49 4AU United Kingdom Tel: (0) Fax: (0) Web: Local Sales Office

Canadian condo complex focuses on luxury, features radiant heating system

A condominium complex in Halifax, Nova Scotia, has been renovated to include new energy efficient technology in order to limit long-term energy consumption and spending, according to the Halifax Chronicle Herald.

The news source reported that the new condos will come complete with an option to create a unique design for each res >radiant heating system. Radiant heating systems maximize the efficiency of heat delivery through a subfloor system, as the technology warms a room more evenly, and cost-effectively than conventional heating. Along with a more effective delivery of heat, the radiant system provides a clean atmosphere, operating without radiators, heating ducts and air vents that can all trap and distribute particles in the air.


The long-term heating costs for a residence are lowered through the adoption of a radiant heating system, and this is why the technology is being used in many new developments. The condominum complex in Halifax utilizes the system to provide its owners with an efficient warmth for the cold winter months Canada is known for.

Owners and developers from the project noted that the unique design of the condos and the relation to the nearby town help to make the residences worth the move up north.

“[This project] is simply the coolest condo project I have ever worked on,” the development’s real estate representative, told the news source. “Combining all the benefits of a really high-end, new construction building with old world charm, all with only 38 residential units. And the views from the roof are truly spectacular.”

Radiant heating question?

i am converting an attached garage to a master bed/bath. the houses heat system is natural gas that comes thru vents located in the concrete slab floor, so installing the same heating in this room is impossible. i was wondering if in floor radiant heating in this room would be sufficient to heat the space?

9 Answers

Go with the first answer. radiant floor heating is great (no more cold feet) and does the job both efficiently and what I like best — uniformly and consistantly. No more hot/cold hot/cold as the heater/fans come on and off.

it can also be very inexpensive to install if you are doing the construction. might be more difficult to do AFTER construction, but even then it runs easily if you have access to the joists under the floor. I assume you are looking at pex? but there are other methods as well.

Good luck, you will enjoy it!

Radiant hot water heat will work, and you will likely be raising the garage floor anyway to get rid of the slope in the floor and get the new floor above grade. You will need a hot water source. You can add a boiler, or for a small area a solar/gas or solar/electric water heater would work too.

If you need air conditioning too, consider a split heat pump system. There is a small ‘head’ unit that sits inside on the wall and a small compressor that sits outside. They are quiet and provide both heat and air conditioning. They don’t heat the floor, but are an economical add on system.

Heat pumps are rated from 47 degrees to 17 degrees. The problem is that the defrost cycle can interfer and does create comfort problems in extreme temperatures. It is unlikely in your part of the country that the heat pump is absent of heat strips which kick on during the defrost cycle aiding in the process and keeping the home comfortable. If it is a matter of cost leave the heat pump on and use the radiant ceiling heat as a booster. The heat strips will be working most of the time. As a last option due to extreme temperatures, use the radiant heat and turn the fan to the on position to circulate the air through your home.

In floor Radiant heat would do the trick yes!

Make sure to insulate well, whichever type of system you use.

Which type of system are you thinking about installing?

Since you have natural gas you could go with a small boiler and use pex tubing embedded in a newly pored layer of concrete. You could use an electric grid system. You could also run duct work to use with the forced air system you are already using. I really like the in-floor radiant heat though its quiet, dust free, and very comfortable. I live in Minnesota so I imagine it would work where you live as well.

Radiant Heating and Radiant Heaters Types

Radiant heating systems, particularly in industrial and commercial facilities around the world since the 1950s finds itself in the application area, it is also used in our country since the early 1990s.According to the principles of radiant heating system it is different from conventional heating systems.heat transfer in conventional heater “convection (convection)” media made by air increased thermal comfort by introducing a certain temperature.However, if the radiant heater, another type of heat transfer to “radiation” they heat the body by emitting.heat transfer by radiation; At finite temperature (0ВєK above) every body, because of the movement of electrons changes in the structure of atoms or molecules emit electromagnetic waves. Increased body temperature, atoms and electromagnetic wave of violence that increase the movement of molecules that heat radiation is also increasing off the first radiation effects in places in the application is felt and heat energy received by the convection of air heated body in the later venue. This basic principle raises many advantages, especially in high places and outdoor heating. where hot air is blown heated, hot air, cold air because there is a less density accumulates on the roof rises environment. In this case, the height increases, increasing the air temperature at the base is increasingly difficult.

The working principle of radiant heaters is very simple. With the help of burning gas in the burner chamber vacuum fan moves the heat in special quartz tube, leaving coated pipe. Located on the heat emitted by the pipe is transmitted to the ground reflected by the reflector help.

It is the most beautiful example of the Earth and solar radiation heat transfer path

Radiant Heaters Types

Radiant heaters practice can be examined under two main groups:

Low Intensity Radiant Heaters:

Radiant heater surface temperatures below those density between 200 and 815 В° C radiant heatersВ called [RG]. wavelengths of the radiation emitted from the surface of this heater may vary between 2 and 10 microns. various types of pipe heaters (gas-fired) and household-type electric heater is located in this category.

Pipe type radiant heaters are examined under two main headings:
1. One of the pipe burners
2. Multi-burner is piped

One burner is Tube Radiant Heaters:

TSE Turkish Standards Institute standard EN 416-1 No. 1 mentions only burners Radiant heating systems. One burners heaters, such as plain and types grouped under two main headings. Straight seen in Figure 3, the radiant heater in a vacuum. Burner (1), Pipe (2), reflective reflector (3), and Vacuum Fan (4) The working principle of this device consists of four main parts, including the following:

One type of flat tube radiant burners

1. The device initially works and creates a vacuum inside the vacuum fan when executed by sucking air in the radiant tube inside throw out.
2. The vacuum level of the vacuum switch modules connected to the ignition of the burner when it reaches a certain value feel it and opens the ignition circuit.
3. The ignition circuit is switched on, the burner’s electronic solenoid valve allows for the gas supply and the ignition electrode begins the era of the device at the same time.
4. occurred in the burner flame when the gas-air mixture ratio to an appropriate level. It is absorbed by the vacuum fan at the end of the flame system.
5. burnt gas which has to cover all the radiant tube to get out of the system, are absorbed by heating pipes.
6 heat pipes begin to emit radiation. If the rays are reflected from the surface down through the pipe of the reflector.
7. Thus, the gas is burned to heat the radiant tube springs out and converted to a radiation objects at the bottom of the device, people, machines, floor etc. whereby hot.

Flat type heaters, when heated space all and devices may have the temperature distribution is appropriately positioned. In fact, in this case the homogeneous heat distribution is not as important as spot heating.

Total installed capacity in 30 minutes to reach the venue is cold comfort temperature should be selected. Changes in temperature distribution in a system of this design is not disturbing. In addition, the direction of the burner device to distribute heat evenly and is very heat loss or, if it is equivalent to the door or window side, the more uniform temperature distribution has been carried out.

The differences in the distribution of flat type radiant heaters heat gave rise to the development of the tube-type radiant heater that resolves this disadvantage. The main difference of the U-type heater, the heater is formed into a flat type with a double row of tubes with a single row of radiant tubes.

Examples of the types of radiant tube

It is a vacuum tube-type radiant heater, fan, but still depends on the final pipe, eliminating device is a two-storey flat heater comes alongside the hot pipe surface with the cold pipe surface. This situation continued throughout the entire heating surface. For example the hot pipe surface 650ВєC in a heater, the cold surface is about 120 В° C, and it is from side to side surface side. The next pipe pipe surface temperature of 350ВєC, which is still in the same heater is around 350ВєC. This feature compared to straight tube-type heaters are radiant heaters allows them to have a more uniform heat distribution.Therefore, the heaters are able to better respond to the needs of direct and local heat.

Multi-burner is Tube Radiant Heaters

Turkish Standards Institute TSE EN 777-1, TS-EN 777-2, TS-EN 777-3 and TS EN 777-4 standard include multi burner is No. Type Radiant Tube Heaters. This standartlartd 4 types of radiant heaters very burners are mentioned:

D Type Very burners heating: you’ve finally found a fan in the fan There were no common line they are affiliated with a secondary burner and all connected devices with even just one burner.

E-type multi burners heating: Each burner with its own fan but are not connected to other fans on the common line and each sub-system are connected even just a burner.

F-type multi burners heating: each with its own fan and a burner connected to a common fan is located at the common line and each sub-system are connected even just a burner.

H-type multi burners heater: more than one burner on the same line as the common fan with a line attached to two or more burners and systems used for each secondary line.

mentioned above in many burners, depending on the type of system, a number of advantages over single burners of said device. However, H-type devices in productivity and low fuel consumption, they come to the fore. exhaust gas is used for multiple burners throughout the pipeline H type device temperature can be reduced so as to maximize the efficiency of the system. It can also be used in relatively small capacity burners at frequent intervals, the temperature distribution becomes more uniform.

High-Intensity Radiant Heaters

Radiant heaters with a surface temperature of 815 В° C and over High Density called radiant heaters.wavelengths of the beams emitted from the surface of high density heater is between 1 and 6 microns. Ceramic plate heater (natural gas), ceramic plates garden, patio and terrace heaters and a high surface temperatures, especially industrial type electric radiant heaters are included in this category.

Ceramic plate radiant heaters, open flame can be also called in the literature. Open flame is due to the form of expression of these devices spread my heat. Devices operate in the manner described below:

1 is sent to the inside by means of a venturi jet orifice and the gas causes the pressure drop across the venturi. This decline is due to air is sucked from the atmosphere into the vacuum effect occurs within and devices.
2. In accordance burn rate of the gas jet Venturi structure is designed to absorb air. Whereby the fuel mixture at room ideal combustion to obtain access to air gas conditions.
3. It reaches blending ceramic plate and tries to escape through the holes in the plates. It burned in exactly where you go out to create a short flame in the ceramic surface. So each hole actually works like a burner.

Ceramic Plate Radiant Heaters

4. Increase the temperature of the ceramic on ceramic surfaces and hence short flame causes the redness. My warm thanks to glowing ceramics begins to spread and reflectors are also directed to the lower level of the device.
5. Device in some heaters so as to increase the efficiency of isolation and thermal inertia of the reserve which steel wire cages may be used.

Radiant Ceramic Plate

Comparison of Low and High Density Heater

I hotter heat transfer with the heat of the surface where the temperature is proportional to the fourth power and surface area. That is, a body surface area is kept constant when removed the surface temperature of the second layer with the heat energy emitted from that surface, the full 16-fold increase. by keeping the temperature constant, and when the surface area taken two times hotter violence also leads to a 2-fold. When the same capacity with both high density and low density heaters analyzed, low intensity radiant heaters have a lower surface temperature than the high density devices. In this case, the heat emanating from the surface of the unit, it means a lower energy. However, the surface areas of low density unit is much higher than the high density devices.If the low and high density are two different devices of the same capacity is exceeded at the same height, low density heater emits energy more space, while a smaller area of high density heater may raise to a higher temperature. These two features are to the fore in different application areas. If all the desired space to be heated, that will be a general warming in this case, it may be more efficient to choose radiant tube heater that can cover more area. The high-density devices “spot” called heating, regional, able to respond better to direct heat needs in places where poor local needs and isolation. In contrast, from application to application and device use may vary depending on the user’s preference. devices for spot heating of low density and high density device likewise also possible to use general heating purposes.

Application of Radiant Heaters

Gas-fired radiant heaters in the first place for various needs in today if they have developed can also be used for industrial applications. In practice, tubular heater of 4 m, while the open flame heaters are mounted at a height of less than 5 m are not preferred because it causes a feeling of overheating.

Radiant heaters, especially the big ones are difficult or impossible with traditional methods of heating and high places, the places where isolation is bad, can provide heating quite successfully in a half-open or outdoor heating applications. Factories, workshops, service stations, churches, stadiums, gymnasiums, warehouses, hangars, fair exhibition halls, greenhouses, livestock farms are shown as examples.

• boiler does not require and equipment.
• Provides a minimum temperature difference between the floor and ceiling.
• Easy installation and low cost of investment pays for itself in a short time.
• it can be heated to different temperatures in different areas.
• Natural gas LPG, LNG and diesel fuel is possible to use options.

space heating with hot air and radiant heaters

• How the above table in the space left by the heated air rises in the area heated by hot air you can see the emergence of their losses. heating warm air moves away from the desired collected above ground.
• Radiant floor heating system in the right table up in the heat of the radiant heating system it is possible to clearly see how the main focus. heating temperature directly sends the desired floor.
• can not be air circulation do not carry dust and particles.
• that these systems provide many advantages compared to conventional blown system and especially before investing significant savings in operating costs later. (50% savings)
• provide a healthy environment with comfortable heating.
• Practical application shows that, in order to 1.8m air temperature at a height 18Вєc’y to the ground in a structure 10 m in the air blast system sulky six temperature while finding about 30Вєc’y, the temperatures in buildings that use radiant heater is around 21ВєC.

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