Module 4: Heat transfer calculations, miscellaneous topics and carbon credit
  Lecture 33: Heat flow in furnaces

Exercise -1

Calculate the composite factor for the closed system of two black surfaces and   under the following conditions:
 a) when  is very large or  is very small (b)  

SOLUTION:

  a)  Where  is very large or  is small


b)


c)


 means  is not being viewed by  and In this case incident radiant flux  is not  falling on
 
d)


 is large as compared to