Air compressed is isentropically in a compressor from 1 bar to 5 bar. Assuming \\gamma=1.4 for air and clearance volume is 5 \% of swept volume, the volumetric efficiency of the compressor is (Take (5)^{0.714}=3.157) :

SSC JE Mechanical Engineering 11 Oct 2020 Shift 1 Papers

Question : 148 of 200

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Air compressed is isentropically in a compressor from 1 bar to 5 bar. Assuming

\γ=1.4

for air and clearance volume is

5 \%

of swept volume, the volumetric efficiency of the compressor is (Take

(5)^{0.714}=3.157)

Solution:

Given:

{P}_{1}=1

bar,

{P}_{2}=5

bar,

{V}_{{C}}=5 \% {V}_{{S}}

{C}=0.05

\η =1+0.05-0.05({5}/{1})^{{1}/{1.4}}

\η =0.8921

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