Answer to Question #115784 in Mechanical Engineering for Smith

Question

During the constant pressure reversible non-flow process with air, the temperature increases from 400 0F to 1600 0F. Show process on the p-V and T-s coordinates and find the heat transfer in BTU/lbm.

Answer 1

The key point for solving this problem is : the heat transfer for a non-flow reversible constant pressure process equals to the change in enthalpy of the system. Therefore,

regardless of the temperature, cp could be found by

The value for k also assumed to be 1.4.

Thus,