Thermal Efficiency Thermal efficiency is the amount of heat produce divided by heating value of the fuel. These systems capture and concentrate the heat energy already available in the environment. Dust and corrosion is a major problem for heaters in confinement systems. Keep them clean and well maintained. Heater fan shutoff needed if the burner does not fire if the gas flow is interrupted without this switch, the heater will continue to circulate cold air Radiant heaters Radiant heaters do not heat the ambient air, instead they heat by radiating energy which produces heat upon contact with a surface.
Heat lamps are the best example of radiant heaters.
Other examples include some gas and kerosene heaters. Heat lamps will burn animals or pen materials if kept too close. Temporary heaters may be practical during cold snaps other infrequent times heat may be needed. Heat Exchangers Heat exchangers do not create heat, instead they recapture heat that that would normally be lost through ventilation. Exchangers typically run cold incoming air alongside ducts containing warmer exhaust air.