A 5-lbm aluminum radiator holds 2 lbm liquid r-134a at 10 f, Civil Engineering

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A 5-lbm aluminum radiator holds 2 lbm liquid r-134a at 10 f

1. A rigid tank of 1.2 lbm steel contains 1.5 lbm R-134a at 100 F, 80 psia. The tank is placed in a refrigerator that brings it to 0 F. Find the process heat transfer and the combined steel and R-134a change in entropy.

2. A 5-lbm aluminum radiator holds 2 lbm liquid R-134a at 10 F. The setup is brought indoors and heated with 220 Btu. Find the final temperature and the change in entropy of all the mass.

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Civil Engineering: A 5-lbm aluminum radiator holds 2 lbm liquid r-134a at 10 f

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