Two identical piston-cylinder devices are each filled with 1 kg air at T = 300 K and P= 2 bar. Next, one of the gases undergoes a reversible and isothermal expansion, and the other one expands isentropically. Both of the gases stop expanding when their final volumes reach twice of their initial volumes. [a) Sketch both of these processes on the same T-S plot. Indicate the direction of the expansion process on the plot. (No need to express the values for T and S on the plot) b) Sketch both of these processes on the same P-V plot. Indicate the direction of the expansion process on the plot. (No need to express the values for P and V on the plot) [c) Calculate the heat transfer between the air and the surrounding for each process separately.

Two identical piston-cylinder devices are each filled with 1 kg air at T = 300 K and P= 2 bar. Next, one of the gases undergoes a reversible and isothermal expansion, and the other one expands isentropically. Both of the gases stop expanding when their final volumes reach twice of their initial volumes. [a) Sketch both of these processes on the same T-S plot. Indicate the direction of the expansion process on the plot. (No need to express the values for T and S on the plot) b) Sketch both of these processes on the same P-V plot. Indicate the direction of the expansion process on the plot. (No need to express the values for P and V on the plot) [c) Calculate the heat transfer between the air and the surrounding for each process separately.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Two identical piston-cylinder devices are each filled with 1 kg air at T = 300 K and P = 2 bar. Next, one of the gases undergoes a reversible and isothermal expansion, and the other one expands isentropically. Both of the gases stop expanding when their final volumes reach twice of their initial volumes. [5] a) Sketch both of these processes on the same T-S plot. Indicate the direction of the expansion process on the plot. (No need to express the values for T and S on the plot) [5] b) Sketch both of these processes on the same P-V plot. Indicate the direction of the expansion process on the plot. (No need to express the values for P and V on the plot) [10] c) Calculate the heat transfer between the air and the surrounding for each process separately. show possible interpolations
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