Most gas-fired infrared heaters use the principle of:
a. Indirect heating of a gas
b. Heating a solid surface
c. Heating a liquid
d. Heating a porous material
e. Catalytic oxidation of a fuel at high combustion temperatures
Answer: B
Most gas-fired infrared heaters use the principle of:
a. Indirect heating of a gas
b. Heating a solid surface
c. Heating a liquid
d. Heating a porous material
e. Catalytic oxidation of a fuel at high combustion temperatures
Answer: B