How do changes in the temperatures of the coolers at various stages of the gas compressor affect the gas delivery volume?

An increase in temperature after cooling at each stage of the gas compressor leads to a decrease in its air delivery capacity; this is most evident in the fact that the compressor’s air delivery capacity is significantly higher in winter than in summer.

The impact is minimal. Some friends who have worked in the metallurgy and chemical industries want to improve the performance of the rear coolers in the currently operating compressors, in order to increase the volume of gas output. But I remember that after discussing it with some colleagues from design institutes and chemical industry sites, it was theoretically ruled out. After all, the volume of gas discharged by the compressor is related to the amount of gas drawn in by the primary compressor; each cooler in the subsequent stages can only affect parameters such as the suction temperature at which the next stage of compression takes place to a certain extent, so it is unlikely that this will lead to a significant increase in the gas discharge volume. The difference mentioned by the friend on the second floor exists because of the different suction conditions of the primary compressor in winter and summer.

1. By reducing the inlet temperature by one level, it is possible to increase the molar amount of gas at the same suction volume and pressure. At the same time, the water vapor partial pressure of the sucked-in gas is reduced, which means that less water vapor is drawn in, thereby increasing the compression capacity of the compressor； 2. Reducing the temperature after compression at various stages, so that the compression occurs near isothermal conditions, can lower the power consumption of the compressor ； 3. Reducing temperatures at all levels is beneficial for the lubrication system ； 4. Reducing the temperature at various levels can lower the compressed pressure, thereby minimizing the impact of clearance on the compressor’s air delivery volume. Just my personal opinion, for reference only, hehe!

What the friend upstairs said is consistent with what I mentioned on the 3rd floor. However, under condition 1, it’s impossible to control the intake air temperature unless an additional water-cooling system is installed; that’s why I talked about the difference between winter and summer； Conditions 2 and 3 also agree with my opinion, but they don’t help much with the original poster’s question ； I also mentioned Condition 4; it has a relatively small impact on the volume of gas.

I am extremely grateful for the help from all of you friends. I hope you will continue to support and assist me! Thank you.

The inflation volume will not increase significantly; it will only see a slight improvement! Lowering the inter-stage temperature correspondingly improves the efficiency of the compressor