Copeland compressor What is multi-stage compression why

Copeland compressor What is multi-stage compression why Copeland Compressor is a major brand of our Gaolun Compressor and one of the most popular products. A lot of understanding of the basic knowledge of the compressor can help us use it better. One of the compressor concepts is called "multi-stage compression". I don't know if you have any idea? 　　What is multi-stage compression? The so-called multi-stage compression is to divide the cylinder of the compressor into several stages according to the required pressure and increase the pressure step by step. After each stage of compression, an inter-stage cooler is set up to cool the high-temperature gas after each stage of compression. This can reduce the exhaust temperature of each stage. 　　Why do multistage compression of Copeland compressors? 　　Because a single-stage compressor is used to press the gas to a very high pressure, its compression ratio will inevitably increase, and the temperature of the gas after compression will also rise very high. When the pressure ratio exceeds a certain value, the final temperature after gas compression will exceed the flash point (200°C to 240°C) of ordinary compressor lubricating oil, and the lubricating oil will be burned to carbon slag, causing lubrication difficulties. In addition, the greater the pressure ratio, the greater the pressure of the gas remaining in the clearance volume. After expansion, the larger the cylinder space occupied, greatly affecting the working efficiency of the cylinder. Generally, each compression ratio does not exceed 3 to 5.

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