CrazyEngineers Archive
Old, but evergreen and popular discussions on CrazyEngineers, presented to you in read-only mode.
@Ila Ragade • 20 Oct, 2012 • 6 likes

A single stage reciprocating air compressor is an air compressor which carries out compression in a single stroke or stage. the compressor body is similar to the piston-cylinder arrangement. the compression action is carried out by the piston whose motion is controlled by a crankshaft and connecting rod. to control the torque produced by the morion of the crankshaft a suitable flywheel is attached to it. thus uniformity in compression is obtained.

PRINCIPLE OF WORKING:

there are two valves(differential pressure type), one being the suction valve and the other the delivery valve, fitted on to the cylinder. let us consider the piston to be at the top dead centre(TDC) of the cylinder. at this point, volume in the cylinder is zero. due to the motion of the crankshaft, the piston begins to move downwards,thus creating a pressure less than atmospheric pressure outside the suction valve. this pressure difference causes the suction valve to open and air is sucked in, which pushes the piston further. thus this motion is called "THE SUCTION STROKE".

Once the piston reaches the bottom dead centre(BDC) the motion of the crankshaft causes it to move in the upward direction. all this while the suction valve remains open. during compression, there is a stage where a pressure slightly greater than atmospheric pressure is obtained, this is when the suction valve closes. this state is obtained within the intermediate position of the piston. the delivery valve is connected to the reciever. when the pressure of the compressed air is equal to or greater than the pressure at the recieving end, the delivery valve opens and the air is delivered. thus this stroke is called "THE DELIVERY STROKE".

the piston operates at very high speeds and the force applied on the cylinder by the piston is very large reducing the life of the compressor. thus to avoid this, a small amount of curvature is provided to the top section of the cylinder, which also protects the valves from damage by the high impact motion of the piston.thus there is a small amount of volume developed between the piston and the top portion of the cylinder at TDC. this volume is known as clearance volume. however clearance volume also has a disadvantage; being, the amount of air that will be sucked in for compression reduces as compared to the original design, thus reducing its efficiency.

@Abdul Suboor Arifi • 22 Feb, 2019

Good answer. But the advantage and disadvantage was messing.

@Gokul • 19 Mar, 2019

Good job ? was Helpful .

@Ankita Katdare • 07 Jan, 2020 • 1 like

Redirected a twitter query here. Hoping that this P-V diagram helps someone.

In single stage reciprocating air compressor, the entire compression is carried out in a single cylinder.

svab-single-stage-reciprocating-compressor.jpg

4.7k views

Related Posts

@Kaustubh Katdare · Oct 8, 2012

So I've this Fiber To The Home aka FTTH service from BSNL and it's taking forever to get activated. The ONT device has been installed and all the connections have...
15.4k views

@enthudrives · May 16, 2009

When we execute a C program, the output is printed on the black screen by default. I want this output to be decorated. I want it on a well designed...
2k views

@gowthamanbu · Aug 3, 2012

Which is the best service provider for Data card? Also mention the tariff rates of Tamilnadu. I Cant get exact answer in Google!!
2.1k views

@Aditya Deshmukh · Apr 8, 2014

Can anyone tell me what is difference between Mali 400 and Adreno 320?
8k views

@Prajakta Kelapure · Jul 6, 2014

Hii all, I am doing my post graduation in Signal Processing. I am searching for the project in Image Processing. I want to do it with LabView as the tool....
2.3k views