A gas undergoes a cycle in a piston–cylinder assembly consisting of the following three processes:Process 1–2: Constant pressure, p = 1.4 bar, V1 = 0.028 m3, W12 = 10 kJProcess 2–3: Compression with pV = constant, U3 = U2Process 3–1: Constant volume, U1 - U3 = -20 kJThere are no significant changes in kinetic or potential energy.(a) Calculate the net work for the cycle, in kJ.(b) Calculate the heat transfer for process 1–2, in kJ.

P = 1.4 barV1 = 0.028 m3W12 =10 KJU1 – U3 = -20 KJ

Answered: A gas undergoes a cycle in a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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A gas undergoes a cycle in a piston–cylinder assembly consisting of the following three processes:

Process 1–2: Constant pressure, p = 1.4 bar, V₁ = 0.028 m³, W₁₂ = 10 kJ
Process 2–3: Compression with pV = constant, U₃ = U₂
Process 3–1: Constant volume, U₁ - U₃ = -20 kJ

There are no significant changes in kinetic or potential energy.

(a) Calculate the net work for the cycle, in kJ.
(b) Calculate the heat transfer for process 1–2, in kJ.

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