A control mass system undergoes a three-process power cycle with air as the working fluid. Air at initial condition of P=0.1 MPa and T=20 °C is compressed isothermally to 0.6 MPa. It is heated at constant pressure and finally it is expanded in a polytropic with Pv=constant, where k=cp/cv (cp=1.005kJ/kg.K and cv= 0.718KJ/kg.K) process back to its initial state. a. Calculate pressure, temperature and specific volume at the 3 states b. Determine the heat transfer per unit mass q, and work per unit mass, w for each process c. Draw these process cycles on P-v diagram, label the points
A control mass system undergoes a three-process power cycle with air as the working fluid. Air at initial condition of P=0.1 MPa and T=20 °C is compressed isothermally to 0.6 MPa. It is heated at constant pressure and finally it is expanded in a polytropic with Pv=constant, where k=cp/cv (cp=1.005kJ/kg.K and cv= 0.718KJ/kg.K) process back to its initial state. a. Calculate pressure, temperature and specific volume at the 3 states b. Determine the heat transfer per unit mass q, and work per unit mass, w for each process c. Draw these process cycles on P-v diagram, label the points
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter45: Domestic Refrigerators And Freezers
Section: Chapter Questions
Problem 2RQ: The operating condition for the single compressor in a household refrigerator is the lowest box...
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