How To Achieve Discharge Pressure More Than 35 KG/CM Square?

In my last post"How Single Stage" & " How Double Stage Reciprocating Air Compressor Works?"
the working of these Reciprocating Air Compressor is described.Which is useful to generate discharge air pressure upto 35 kg/centimeter square.
Some Industries required Air Pressure more than 35 kg/centimeter square to produce their product.For example
Minral Water Bottle (Pet Blowing) requires air pressure near about 40 kg/centimeter square to produce desired
shape of bottle at bottomside.Here Two Stage Reciprocating Air Compressor is not useful,we required the Air Compressor,who generates Air Pressure above 35 kg/centimeter square.This Discharge Air Pressure is achieved by MULTI STAGE AIR COMPRESSOR.
We normally use Three Stage Reciprocating Air Compressor as Multi Stage Air Compressor.If we required discharge
air pressure above 85 kg/centimeter square then Four Stage Air Compressor is useful.(Not used in huge quantity).

The working principle of Multi Stage Air Compressor is same as Double Stage Air Compressor.
In Three Stage Air Compressor,fresh air from atmosphere enters in First Stage (Low Pressure) Cylinder through
Air Cleaner.This air is compressed by Piston upto 4 kg/centimeter square & then delivered to Second Stage
(Middle Pressure) cylinder through Inter Cooler for further compression.
In Second Stage Cylinder low pressure air is compressed upto air pressure 14 kg/centimeter square & discharge to
Third Stage (High Pressure) cylinder through second Inter Cooler to increase air pressure upto desired delivery pressure.
At High Pressure Cylinder the 14 kg/centimeter square air pressure is increased upto desired discharge range from 35 kg/centimeter square TO 85 kg/centimeter square by the piston reciprocating inside the High Pressure Cylinder.

MULTI STAGE RECIPROCATING AIR COMPRESSORS are used in few Industries like Pet Blowing,CNG Center etc.
Some more facts about Multi Stage Air Compressor will be disclosed in coming post,which I feel useful for the
person who is interested to know about air compressor.
Bye till next post.
Prasanna
http://www.pnengineering.blogspot.com/

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