a gray body of 4ft2 @760 F and emissivity of 0.35 is surrounded by another gray body of 36ft2 @100 F and emissivity of
Posted: Tue May 24, 2022 10:01 am
a gray body of 4ft2 @760 F and emissivity of 0.35 is surrounded by another gray body of 36ft2 @100 F and emissivity of 0.75. what is the heat by radiation in BTU/h