Principles of Radiant Heating and Cooling
Radiant heat is infrared radiation moving from a warmer object to a cooler object. The earth receives all of its energy from the sun in the form of radiant energy.
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With radiant heating and cooling systems in buildings, heat is transferred directly to or from occupants and objects.
• In typical radiant heating systems, warm water is circulated through tubing embedded in floor systems, with placement in walls and ceilings increasing and providing some advantages. Some radiant floor systems make use of electric resistance elements in the floor, walls or ceiling
• While not yet as common as radiant heating, radiant cooling – often in ceiling panel radiators– has growing applications, especially in commercial buildings. “Chilled beams” are another radiant cooling device with growing applications, though many chilled beams rely primarily on convection rather than radiation.