SPEED OF ROTATION OF THE COMPRESSOR
The usual range of peripheral speed reciprocating compressors between 800 and 1800 min-Minimum radial velocity, as a rule, is dictated by the requirement of an oil pump, because he works from a shaft of the compressor required minimum speed to come up with an acceptable oil pressure increasing. There is no sharp the maximum speed, but life expectancy compressor depends on the speed. Impact on the suction and discharge valve increases with speed and friction considerations, as a rule, assume it is desirable speed of the piston at the speed of 4 m/s (800 fpm). Typical length of piston stroke, it piston speed translates to 1200 rpm
Volumetric efficiency is fairly constant, because the degradation of efficiency due to the differential pressure of the refrigerant vapor at high flow rates offset by the relative reduction of leakage in the past the piston rings. Compression efficiency drops, but the speed increases, because certain losses, such as pressure drop through the valve ports to increase as the square of the velocity of flow...
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Industrial