Of the processes proposed in Probs. 7.50 and 7.51, which would you recommend? Why? Problem 7.50 Liquid
Question:
Of the processes proposed in Probs. 7.50 and 7.51, which would you recommend? Why?
Problem 7.50
Liquid benzene at 25°C and 1.2 bar is converted to vapor at 200°C and 5 bar in a twostep steady-flow process: compression by a pump to 5 bar, followed by vaporization in a counterflow heat exchanger. Determine the power requirement of the pump and the duty of the exchanger in kJ⋅mol−1. Assume a pump efficiency of 70%, and treat benzene vapor as an ideal gas with constant CP = 105 J⋅mol−1⋅K−1.
Problem 7.51
Liquid benzene at 25°C and 1.2 bar is converted to vapor at 200°C and 5 bar in a two-step steady-flow process: vaporization in a counterflow heat exchanger at 1.2 bar, followed by compression as a gas to 5 bar. Determine the duty of the exchanger and the power requirement of the compressor in kJ⋅mol−1. Assume a compressor efficiency of 75%, and treat benzene vapor as an ideal gas with constant CP = 105 J⋅mol−1⋅K−1.
Step by Step Answer:
Introduction To Chemical Engineering Thermodynamics
ISBN: 9781259696527
8th Edition
Authors: J.M. Smith, Hendrick Van Ness, Michael Abbott, Mark Swihart