How is the compression ratio calculated?
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This post was last edited by yangyanrong on 2019-4-11 at 18:16. I would like to ask how the compression ratio is calculated, as well as what the concepts of isothermal compression and absolute compression are. Can lowering the intake air temperature increase the compression ratio? What is the relationship between compression ratio and air injection volume?
This post was last edited by yangyanrong on 2019-4-11 at 18:16. The compression ratio is the ratio of the inlet volume to the outlet volume. Lowering the temperature can increase the compression ratio
The pressure ratio is the ratio of the gauge pressure at the outlet to that at the inlet
Compression ratio: It refers to the ratio of the outlet pressure to the inlet pressure of the compressor. Adiabatic compression: It is a compression process in which no heat exchange occurs with the outside environment; this is what is meant by adiabatic compression. Isothermal compression: During this type of compression, the temperature of the gas remains constant, and it represents an ideal process. At standard conditions, a lower inlet temperature leads to a significant increase in efficiency
The compression ratio has a direct impact on the air inflation volume. Theoretically, the higher the compression ratio, the better the performance; in practice, however, the recommended range in China is between 2 and 5. The specific formula is as follows: (Pressure at the higher level + 0.09999) / (Pressure at the lower level + 0.09999) = Compression ratio
Compression ratio = exit absolute pressure / inlet absolute pressure~~
The compressor ratio is the ratio of the inlet volume to the outlet volume; generally, the more air a reciprocating compressor draws in at each cycle, the greater its output power
Why add 0.09999?