TH10Set02

# TH10Set02 - Problem Set 2 PS2 due Friday May 19 PS2-1 2.72...

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Problem Set 2 PS2 due Friday May 19 MS 2.72 A thermodynamic system undergoes a cycle consisting of four processes according the data in the following table. The units are Btu. Determine the missing units in the table and also determine whether the cycle is a power or a refrigeration cycle. Process U change KE change PE change E change Q, heat W, work 1-2 72 -5 -6 0 2-3 64 0 90 3-4 -97 0 92 4-1 0 3 0 MS 2.73 PS 2-2_06 Is the following cycle, which consists of three processes, a power cycle or a refrigeration cycle? Sketch a pressure-volume and temperature-entropy property diagram of the cycle. 1) a compression process with p V= constant, with no change in internal energy, from p=1 bar, V= 1.6 m 3 to V= .2 m 3 2) a constant pressure process to V=1.6 m 3 3) a constant volume process with an internal energy change of -3549 kJ PS2-1 PS2-2 2-31 For refrigerant R-134a complete the following table. Temperature, C pressure, kPa volume, m 3 /kg phase -8 500 30 .022 320 saturated vapor 100 600 PS2-3

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= + = + + = = = = = + + + + δ W δ Q : Cycle a for
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## This note was uploaded on 07/08/2011 for the course MAE 204 taught by Professor Errington during the Summer '08 term at SUNY Buffalo.

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TH10Set02 - Problem Set 2 PS2 due Friday May 19 PS2-1 2.72...

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