Reciprocating compressor cylinder cooling

Do you have pictures of this model? Can I take a look?

Personally, I think this requirement isn’t very meaningful and is difficult to achieve.

In reality, it’s always directly connected to the circulating water; I’ve never seen the inlet circulating water being reheated.

The key issue is still the inlet temperature; when selecting a reciprocating compressor, it’s not possible to choose an inlet temperature that is too low

The cooling water used for the reciprocating engine cylinders that we have currently is not heated at all; it goes straight into the cylinders!

This post was last edited by Xuefeng86 on 2016-2-3 at 13:25. When a gas is compressed, its temperature inevitably rises; therefore, before it enters the next stage of compression, it must be cooled using a cooler to a temperature close to that of the gas when it was drawn in. The functions of this cooling process are as follows: ① To reduce the amount of work required for compressing the gas in the next stage, thereby lowering the compressor’s power consumption； ②To make the entire compression process approach isothermal compression ； ③Cause the oil mist and water vapor in the gas to condense, and remove them in the separator ； ④It prevents the temperature of the gas after compression at the next stage from becoming too high (above the flash point of the lubricating oil), meets the performance requirements of the equipment, reduces equipment failures caused by high temperatures, and ensures proper lubrication of the compressor. The gas discharged from the compressor’s cylinders often contains water mist and oil mist, which condense into water droplets and oil droplets after cooling. To prevent these droplets from reaching the next stage of the cylinder, they must be separated promptly. This is an explanation from a compressor technology Q&A forum regarding why the compressed gas needs to be cooled and separated. In my opinion, whether to use circulating water depends mainly on the quality of the water. We use water from medium-pressure boilers for cooling, and there are dedicated water treatment facilities for cooling and filtering the water. The quality of circulating water is relatively poor, which can lead to issues such as structural problems and corrosion in the cooling chamber, thereby affecting the cooling efficiency

Now, the vast majority of compressor manufacturers recommend building a separate compressor water station equipped with a heater

API618 for reciprocating compressors recommends that the cylinder cooling water temperature be higher than the temperature of the incoming gas, in order to reduce the formation of liquid accumulations； For gases that are less prone to fluid accumulation after compression, the temperature of the cooling water can be adjusted more flexibly.