Two schemes are proposed for the reduction in pressure of ethylene gas at 375 K and 18
Question:
Two schemes are proposed for the reduction in pressure of ethylene gas at 375 K and 18 bar to 1.2 bar in a steady-flow process:
(a) Pass it through a throttle valve.
(b) Send it through an adiabatic expander of 70% efficiency.
For each proposal, determine the downstream temperature, and the rate of entropy generation in J⋅mol−1⋅K−1. What is the power output for proposal (b) in kJ⋅mol−1?
Discuss the pros and cons of the two proposals. Do not assume ideal gases.
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Step by Step Answer:
a For a steadyflow process the downstream temperature after passing the gas through a throttle valve is the same as the upstream temperature Therefore ...View the full answer
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Related Book For 
Introduction To Chemical Engineering Thermodynamics
ISBN: 9781259696527
8th Edition
Authors: J.M. Smith, Hendrick Van Ness, Michael Abbott, Mark Swihart
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