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Regarding the compression ratio of reciprocating compressors

2009-04-04View Original

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The reciprocating compressors in our facility use two-stage compression. Is the compression ratio for each stage fixed? If the inlet pressure changes, how do the compression ratios at each stage change?
Reply #22009-04-04
Adjust according to the amount of data returned. It is best for the compression ratio between levels to be consistent
Reply #32009-04-04
I don’t quite understand! What does \"return value\" mean?
Reply #42009-04-04
Compression ratio: It is the ratio of the outlet pressure (absolute pressure) to the inlet pressure (absolute pressure) of each cylinder in the compressor; that is, compression ratio = P(outlet) / P(inlet) (absolute pressure). When the intake pressure decreases while the exhaust pressure remains unchanged, for a single-stage compressor, the compression ratio increases and the volume of air discharged decreases. This post was last edited by jilinzhengda on 2009-4-4 22:45.]
Reply #52009-04-04
The maximum compression ratio is determined by the equipment itself, and it remains constant for a fixed compressor. If the inlet pressure changes, the compression ratio also changes; for the specific formula, see above
Reply #62009-04-05
The compression ratio is not fixed but rather falls within a certain range; exceeding this range increases the load on the compressor motor, which has an impact on the crankshaft, connecting rods, pistons, and valve assemblies. In severe cases, the motor may stop working, and in such situations it’s advisable to increase the compression ratio by one level. There is an inverse relationship between inlet pressure and compression ratio
Reply #72009-04-05
Changes in inlet pressure and outlet pressure both affect the compression ratio. The compression ratio of a standard compressor is fixed, with limited adjustment options; operating outside this compression ratio range can be harmful to the compressor.
Reply #82009-04-05
What is motor tripping?
Reply #92009-04-06
It is not a fixed value; the compression ratio changes as well when the inlet pressure changes

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