Myworth:
The short version:
- "Radiant heat energy is emitted from a warm element, such as a floor, wall or overhead panel, and warms people and other objects in rooms rather than directly heating the air."
The long version:
- "Radiant panels heat a room through thermal radiation rather than convection. That is, a radiant heat panel transmits energy as photons in the infrared section of the electromagnetic spectrum. On the other hand, a furnace or boiler transmits energy via thermal excitation of air molecules. Although the example is unrealistic, a radiant heat panel could work in the vacuum of space where other heating systems would not. A radiant ceiling panel does very little to warm the air, but will warm any object in its direct line of sight. Radiant heat panels usually operate between 150 to 170 degrees F, but can go as low as 85 degrees F or as high as 300 degrees F. The ideal temperature is a function of the room size as well as the panel's surface area and wattage."
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