Question

A boiler section boils 3 kg/s saturated liquid water at 2000 kPa to saturated vapor in a reversible constant pressure process. Assume you do not know that there is no work. Prove that there is no shaftwork using the first and second laws of thermodynamics. 

Answer 1

C.V. Boiler. Steady, single inlet and single exit flows.

It should be zero (non-zero due to round off in values of s, h and T_sat). 

Often it is a long pipe and not a chamber