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7/30/2019 LP Compressed Air System
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Compressed Air System
By Amit Jha
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Requirement
For Braking of Generator
For Service air requirement
For pressurizing Accumulator of governor
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Equipments
Compressor
Receiver
Air Drier
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Compressor
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Compressor
Types
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HP Compressor
Basically compressor can be of following types
1. Reciprocating Air Compressors
Reciprocating air compressors are positive
displacement machines, meaning that theyincrease the pressure of the air by reducing itsvolume. This means they are taking in successivevolumes of air which is confined within a closedspace and elevating this air to a higher pressure.
The reciprocating air compressor accomplishesthis by a piston within a cylinder as thecompressing and displacing element
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2. Rotary Screw Compressors
Rotary air compressors are positive displacementcompressors. The most common rotary aircompressor is the single stage helical or spirallobe oil flooded screw air compressor. Thesecompressors consist of two rotors within a casingwhere the rotors compress the air internally.There are no valves. These units are basically oilcooled (with air cooled or water cooled oilcoolers) where the oil seals the internalclearances
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3. Centrifugal Compressors
The centrifugal air compressor is a dynamic
compressor which depends on transfer of
energy from a rotating impeller to the air.
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Requirement of Receiver
?
What if not ?
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Air Dryer
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What if not
?
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It cools the air which comes after receiver and
in this process moisture is separated.
So basically it is a moisture separator
This can also be done by another type of air
dryer called desiccant air dryer.
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Desiccant air dryer
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Working
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