Hydraulics and Pneumatics: Unit IV: Pneumatic and Electro Pneumatic Systems
Review and summary
Pneumatic and Electro Pneumatic Systems - Hydraulics and Pneumatics
A compressor is a device used to compress air from a low inlet pressure to a higher desired pressure level.
REVIEW AND SUMMARY • A compressor is a device used to compress air from a low inlet pressure to a higher desired pressure level. • Types of air compressors : 1. Positive displacement compressors, and 2. Dynamic compressors. • The construction, operation, advantages, disadvantages, and ranges of piston-, screw-; and vane-type compressors have been described in this chapter. • Formulae summary : • The purpose of fluid conditioners is to make the compressed air more acceptable and suitable fluid medium for the pneumatic system components as well as for operating personnel. • The various fluid conditioners includes: 1. Filters, 2. Regulators, 3. Lubricators, 4. Mufflers, and 5. Air dryers. • The function of air filters is to remove all foreign matter and allow dry, clean air to flow without restriction to the regulator and then on to the lubricator. • The function of the air pressure regulator is to regulate the pressure of the incoming compressed air so as to achieve the desired air pressure at a steady condition. • The function of an air lubricator is to add a controlled amount of oil with air to ensure proper lubrication of internal moving parts of pneumatic components. • The function of a muffler is to control the noise caused by a rapidly exhausting air stream flowing into the atmosphere. • The function of air dryers is to remove all water vapour/moisture from the air leaving the compressor. • The purpose, types, graphic symbol, construction, and operation of the above-said fluid conditioners are also presented in this chapter. KEY TERMS ONE SHOULD REMEMBER Compressors Positive displacement compressors Piston-type Screw-type Rotary-vane type Staging Single stage compressors Air receiver size Fluid conditioners Air filters Air pressure regulators Air lubricator Muffler Air dryers Multi-stage compressors Air capacity rating of compressors FRL unit Pneumatic silencer
Hydraulics and Pneumatics: Unit IV: Pneumatic and Electro Pneumatic Systems : Tag: : Pneumatic and Electro Pneumatic Systems - Hydraulics and Pneumatics - Review and summary
Hydraulics and Pneumatics: Unit IV: Pneumatic and Electro Pneumatic Systems
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Hydraulics and Pneumatics
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