Efficiency of Infrared Radiant Heaters
Radiant efficiency or the radiant factor is:
The percentage of fuel energy transformed into radiant energy from the combustion process
A measure of the radiant component of the total heat output
Note: This is unrelated to the more common efficiency measures: combustion efficiency or AFUE.
Radiant energy is emitted by any ‘body’ that is warmer than its surroundings.
Radiant energy is a function of 3 factors:
- The surface temperature of the emitting body – varies to the 4th power of temperature
- The surface area of the emitting body
- The ’emissivity’ factor of the emitting body