What are Reciprocating Air compressor and it's advantages/disadvantages and it's Application.

Reciprocating Air compressor:-

Reciprocating Air compressor is a Mechanical device in which air compression takes place by the action of piston in a cylinder with one way valves and this compressed air is pump into an air chamber.

Types Reciprocating Air compressor:-

1. Single Stage Reciprocating Air compressor.2.Multistage Reciprocating Air compressor.

1.Single Stage Reciprocating Air compressor:-

 A Single Stage Reciprocating Air compressor is a Mechanical device in which Compression of air is takes place in a single stroke or stage.the compressor body is similar to the piston cylinder arrangements.
The compression action is actually carried out by the piston whose motion is to and fro and it's controlled by the crankshaft and connecting road .

Single Stage Reciprocating Air compressor

Working principle:-

In single stage Reciprocating Air compressor, pressure is increased by variation in the volume of air inside the cylinder by means of Reciprocating motion of moving piston.

Construction:-

• In single stage Reciprocating Air compressor Consists of Piston cylinder arrangements and crank mechanism.
• There are suction and delivery valves mounted above the head of cylinder.
• These valves are pressure differential type means that it can open and close automatically by pressure difference inside the cylinder.
• It has relief Valve so that it can release excess pressurized air when inside the chamber pressure of gas cross  the limit.

Working:-
In single stage Reciprocating Air compressor working is basically done by two stroke that is suction and the other one is compression stroke.
1. Suction Stroke
2. Compression Stroke

1. Suction Stroke:-
   During Suction Stroke the piston starts move first from Top dead center (T.D.C) to Bottom dead center (B.D.C). Now the air compressed in the previous stroke and now when it moves from T.D.C to B.D.C , due to  expansion of air,the entrapped pressurized air in the clearance space  is now decreasing .after some time when the piston is about to reach B.D.C .the pressure of air inside the cylinder falls down below the atmospheric pressure.Due to this the suction valve gets open due to pressure difference .the suction of air continues untill the piston reaches B.D.C. and during this stroke delivery valve remains closed.

2. Compression stroke:-
After completion of Suction Stroke and when the piston starts moving from B.D.C to T.D.C then the pressure of sucked air increasing continues and when it increases above the atmospheric pressure then the suction valve gets closed and due to further movement of piston towards the T.D.C then the compression of air starts and when piston is reach with compressed air along with pressurized air  untill desired discharge pressure obtained.When it obtained desired discharge pressure then delivery valve gets opened and pressurized air is deliver into chamber.and at the end of compression stroke a little bit of pressurized air is entrapped between the clearance space.

2. Multistage Reciprocating Air compressor:-

In multistage Reciprocating Air compressor, between each compression stage the air is passes through a heat exchanger where it is cooled.cooling of air reducing the amount of work Necessary to Compress it further.
              In multistage Compressors,air is cooled in between a stage of Compression with the help of an intercooler.multistage compression feature a series of cylinders,each of a different diameter.

Multistage reciprocating Air compressor

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