Mechanical Engineering - Compressors, Gas Dynamics and Gas Turbines - Discussion


The volumetric efficiency for reciprocating air compressors is about

[A]. 10 to 40%
[B]. 40 to 60%
[C]. 60 to 70%
[D]. 70 to 90%

Answer: Option D


No answer description available for this question.

Prasu said: (Nov 20, 2014)  
Can any one explain it please.

Sunil Kumar said: (Feb 9, 2015)  
Volumetric efficiency = (Swept volume/(clearance volume+swept volume)), swept volume is volume swept by piston in cylinder.

Clarence volume is about only 10-15% of total volume. So volumetric efficiency of engine could be more than 70%.

Nikhil Mangrulkat said: (Aug 7, 2015)  
Voletric efficiency=Vas/Vs, Vas-actual suction of air between top dead center to bottom dead center.

Vs-Vas+clearance volume. Clearance volume = 0.1 to 0.15.

Siva Prakash said: (Jul 29, 2016)  
I can't able to understand this. Someone help me.

Dharmveer said: (Mar 21, 2017)  
Please explain this.

Vipul Kumar said: (Oct 16, 2017)  
It is the ratio of an actual amount of air sucked to the total volume of a reciprocating cylinder.

Suraj Kumar said: (Sep 29, 2018)  
It is ratio of effective swept volume to the swept volume.

Enushreddy said: (Jan 9, 2020)  
Volumetric efficiency is the ratio of the volume of free air delivery per stroke to the swept volume of the piston.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.