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An air-standard cycle is executed within a closed piston–cylinder system and consists of three processes as follows: 1→2: constant-volume head addition from 100 kPa and 27°C to 850 kPa 2→3: isothermal expansion until ?3 =7?2 3→1: constant-pressure heat rejection to the initial state. Assuming that air has constant properties with Cv = 0.718 kJ/kg·K, Cp = 1.005 kJ/kg·K, γ = 1.4 and R=0.287 kJ/kg.K (a) Sketch the T-S and P-V diagram of the cycle  (b) Determine the ratio of the compression work to the expansion work  (c) Calculate the cycle thermal efficiency

An air-standard cycle is executed within a closed piston–cylinder system and consists of three processes as follows: 1→2: constant-volume head addition from 100 kPa and 27°C to 850 kPa 2→3: isothermal expansion until ?3 =7?2 3→1: constant-pressure heat rejection to the initial state. Assuming that air has constant properties with Cv = 0.718 kJ/kg·K, Cp = 1.005 kJ/kg·K, γ = 1.4 and R=0.287 kJ/kg.K (a) Sketch the T-S and P-V diagram of the cycle  (b) Determine the ratio of the compression work to the expansion work  (c) Calculate the cycle thermal efficiency

Elements Of Electromagnetics
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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An air-standard cycle is executed within a closed piston–cylinder system and consists of
three processes as follows:
1→2: constant-volume head addition from 100 kPa and 27°C to 850 kPa
2→3: isothermal expansion until ?3 =7?2
3→1: constant-pressure heat rejection to the initial state.
Assuming that air has constant properties with Cv = 0.718 kJ/kg·K, Cp = 1.005 kJ/kg·K, γ = 1.4
and R=0.287 kJ/kg.K
(a) Sketch the T-S and P-V diagram of the cycle 
(b) Determine the ratio of the compression work to the expansion work 
(c) Calculate the cycle thermal efficiency 

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