What Is a Radiant Heater?
|Radiant heater, as opposed to warm air systems (such as a forced air unit heaters), delivers the source of heat to the floor level, not the ceiling.
Radiant energy is the oldest form of heating used to provide comfort and is the basis for all heating systems.
Radiant energy is totally pure radiation and is absorbed by an object without physical contact with the heat source or by heating the surrounding air, as is the case with convective, forced air systems.
Radiant heaters are the most efficient and effective method in which to deliver "heat" under the diverse
| conditions present in warehouses, garages, storerooms as well as the largest facilities imaginable.
Hot gases are moved through the radiant tube either by vacuum (negative) or power (positive) pressure. The radiant energy produced is then directed downward by the reflectors positioned above the radiant tubes.
The floor is typically the largest mass within any building. Thus the floor becomes the primary source of heat.
|A gas fired radiant heating system emulates the suns radiant output. Like the sun, the radiant tube emits Radiant energy in all directions. Convection loses from a radiant tube which is not covered by a reflector are great.||
|Reflectors positioned above the radiant tube direct the radiant energy towards the floor area. The radiant energy is converted into heat when absorbed by objects in its path.
All of the radiant tubing network associated with both the Omega II® , Reflect-O-Ray® , and Serengeti-IR® systems are covered by reflectors -- including elbows and "U" bends. This important feature allows maximum radiant energy efficiency.
|The radiant energy is absorbed by the building's heat sinks, i.e. concrete floors, machinery, fixtures, etc. This heat sink is what in turn re-radiates energy for the "warmth" that is felt in the surrounding air. Because stratification of air (difference between floor temperature and ceiling temperature) is significantly lower than conventional hot, forced air systems, the structure heat loss is greatly reduced resulting in large savings in heating dollars.|
Applications of a radiant heater
Definitions of Radiant Heat on the Web:
* A heating system which uses hot water, steam pipes or electric resistance coils to heat the floors, walls or the ceilings of a room. www.monarchhomesonline.com/constructionGlossary.html
* Heat transferred from one body to another which are not in contact (ie, from the sun to a roof). www.airvent.com/homeowner/whyVent/glossary.shtml
* Radiant heat is emitted from hot surfaces, eg the glowing panel of a gas heater, the surface of a heated concrete slab, a bar radiator or open fire. Radiant heat directly warms people and objects in the room, rather than warming the air. www.sustainable-energy.vic.gov.au/seinfo/glossary/r-z.asp
* Coils of electricity, hot water or steam pipes embedded in floors, ceilings, or walls to heat rooms. www.helpubuy.net/building_terms.htm
* The transfer of heat energy from a location of higher temperature to a location of lower temperature by means of electromagnetic radiation. Radiant heating is due to
Radiant radiation and its use is very prevalent in passive systems.
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