Objects within the path of the direct radiant energy from the heater absorb this energy and re-radiate into the surrounding air.ĭifferent materials have a varying ability to absorb direct radiant energy. Place the heater with the burner end near doors or colder walls of the building. However, matching the hotter end of the heater with the colder areas of the building will put more direct radiant on walls, floors and people where there is the most heat loss, evening out heat distribution. As people move about within the building, they will sense these colder areas because the radiant environment is not neutral.Ĭonventional radiant tube heaters have a hot and a cooler end which is often considered to be a disadvantage in achieving even heat distribution. Doors and windows are usually colder, the north side of the building may be subjected to more wind etc. Where there are cold walls or windows people will sense a draft unless these areas are heated to the point where they are no longer heat sinks within the space.īuildings rarely lose their heat evenly over all of the areas. In placing radiant tube heaters in a building layout, it is important to understand that people are uncomfortable when the radiant output of their surroundings is not neutral. Heater Placement - Put the heat where the cold is This mechanism is the same as the warming of the atmosphere after the earth has absorbed the sunshine. The radiant energy that strikes the floor, walls and other objects in the building is absorbed and these objects, as they get warmer, re-radiate thermal energy. The heater produces infrared energy which radiates down on people and objects, the former absorb the energy and convert it to body heat directly, as though being warmed by the sun. Infrared heaters keep people warm via direct and secondary thermal mechanisms. Infrared heat addresses most of these deficiencies but has often been rejected because a lack of good layout practice has resulted in poor heat distribution.įortunately, our understanding of how infrared radiant heat works and some technical improvements in equipment make low intensity infrared heat the preferred option for industrial building heat, providing comfort and operating economy. Some disadvantages are: noise, stratification, dust circulation and upper end operating cost, especially in larger "box building" structures. Also, conditioning equipment can easily be incorporated in the ducting system. Infrared heat is radiant heat transfer and is commonly accomplished with gas fired low intensity tube heaters or open flame ceramic face high intensity heaters.Īdvantages of warm air systems are: a centralized thermal source and flexibility in ducting the warm air to precisely where it is wanted. Furnaces, rooftop or unit heaters and air rotation are examples of convective heat transfer. In building spaces, heat is transferred by convection or radiation. Today a variety of heating methods exist to condition warm or cool the building space that we are in, based upon the same age old fundamental laws of heat transfer that move warmth from the thermal source to the body space. Rules for Effective Infrared Layouts IntroductionĮver since the caveman crouched over his fire in his cave to keep himself warm, man has continued his quest to improve the comfort of his environment. Rugged High Efficiency Heater - Model UXR.Deluxe High Efficiency Heater - Model UX.Standard High Efficiency Heater - Model UA.Rugged High Efficiency Heater - Model TXR. Deluxe High Efficiency Heater - Model TX.Standard High Efficiency Heater - Model TA.
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