先进材料疑固实验室 Heat transfer Laboratory of Advanced Materials Solidification For two grey-body surfaces forming an enclosure,the heat transfer rate is Q=- (T1-T) 1 +1-2 A161TA1F→2A2e2 Where e1 and e2 are the emissivities of the surfaces The emitted heat energy is E=0T4 Where a is the emissive rate; is the constant 5.67x 10-8 W/(m2K4) T is the surface temperature of objective 上浒充通大学 SHANGHAI JIAO TONG UNIVERSITYHeat transfer For two grey-body surfaces forming an enclosure, the heat transfer rate is The emitted heat energy is Where and are the emissivities of the surfaces Where ε is the emissive rate; σ0 is the constant = 5.67x 10-8 W/(m2K4) T is the surface temperature of objective