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For gases, the higher the CP/CV ratio, the greater the temperature rise during compression?

2017-04-28View Original

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For gases, the higher the CP/CV ratio, the greater the temperature rise during compression? Generally speaking, hydrogen has a higher CP/CV value; does this mean that when it is compressed, its temperature rises significantly?
Reply #22017-04-28
Is the so-called pressure ratio CP/CV? Also, is there a theoretical explanation for why a higher compression ratio results in a higher temperature rise?
Reply #32017-04-29
For an ideal gas, K = CP/CV; K is known as the adiabatic index of the gas. The pressure ratio is the ratio of pressures before and after compression: P2/P1. According to the equation for adiabatic processes, the higher K is, the greater the temperature rise. The higher the compression ratio, the greater the temperature rise
Reply #42017-05-01
The K value for both air and nitrogen is 1.4, but it is said that when tires are filled with nitrogen, the temperature rise is lower. In reality, is there any difference? :lol
Reply #52019-04-26
Theoretically, that’s the case, and the amount of work done is also relatively large. Therefore, reciprocating compressors are generally used for hydrogen compression, and a water jacket can be installed for cooling.

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