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A solar concentrating heat exchanger system directs sunlight onto a long,straight pipe. The pipe recieves 153.616 btu/h per foot of length. If water enters the pipe @ 300 f and is heated isothermally so that it leaves as vapor @ 20 psia then:

A. How long is the pipe for steady state,steady flow conditions.

B. What is the entropy production.

C. Show whether this system violates the second law of thermodynamics.

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