- #1
ajaysabarish
- 58
- 0
My textbook says that net rate of heat transfer due to radiation is εσA(T^4-To^4) but i couldn't understand it.
Rate of emission is εσAT^4 and rate of absorption is aσATo^4 so net rate of heat transfer must be εσAT^4-aσATo^4(where T is the temperature of body and To is the temperature of surroundings).it is possible only if a=e which means body is in thermal equilbrium.But that is not always the case.please help
Rate of emission is εσAT^4 and rate of absorption is aσATo^4 so net rate of heat transfer must be εσAT^4-aσATo^4(where T is the temperature of body and To is the temperature of surroundings).it is possible only if a=e which means body is in thermal equilbrium.But that is not always the case.please help
Last edited: