Question

The radiation shape factor of the circular surface of a thin hollow cylinder of 10 cm diameter and 10 cm length is 0.1716. What is the shape factor of the curved surface of the cylinder with respect to itself?

Answer 1

final pressure will be 

p=vt 

=$0.1\times 15$

=$1.5 Mn/m^2$

final temperature will be 

t=p/v

=$0.11/0.1$

$=1.1\degree celcius$

shape factor will be

$=15\times0.11\times0.1$

=0.165 answer