CHAPTER 1AIR GENERATION AND DISTRIBUTION

EQUATIONS ASSOCIATED WITH COMPRESSED AIR3 unit involves to measure pressure inpneumatic system:Pascal (Pa)Psibar1 Atm = 100 kPa (1 Pascal = 1 N/m2 )=14.5 psi= 1.01325 bar

BOYLES LOWSReduce volume, pressure will be increase

reduce volume = pressure increase 2 times

AIR PREPARATIONFor continuing performance of control systems and working elements it is necessary to guarantee that the air supply is:

The equipment to be considered in the generation and preparation of air include:

AIR COMPRESSOR

To gather and compress air from normal to high pressure. Those air compressors in which successive volumes of air are enclosed and then elevated to a higher pressure by reducing the volume of the enclosure holding air

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SINGLE PISTON COMPRESSOR

DOUBLE PISTON COMPRESSOR

THREE PISTON COMPRESSOR

SCREW COMPRESSOR

SLIDING COMPRESSOR

RESERVOIRSA reservoir is configured downstream of a compressor to stabilize compressed air. A reservoir compensates the pressure fluctuations when the compressed air taken from compressorIf the pressure in the reservoir drop below a certain value, the compressor will compensate until the set higher is reached again.This advantage that the compressor does not need to operate continuously.

The size of a compressed air reservoir depends on the: Delivery volume of the compressor Air consumption for the application Network size Type of compressor cycle regulation Permissible pressure drop in the supply network

Continuous coolerAir coolerWater cooler

Air dryerAbsorption dryingAdsorption dryingRefrigerant drying

THAT'S ALL FOR TODAY..

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