What is it about?
The article discusses various schemes of autonomous liquid cooling of cylinder piston groups of low-flow reciprocating compressors, which use moving parts of the cylinder piston group and pressure fluctuations in the discharge and suction lines of the compressor to organize the movement of coolant. The advantages and disadvantages of each scheme are analyzed.
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Why is it important?
When designing reciprocating compressors, constructive measures are necessarily taken to reduce the temperature of the parts of the cylinder piston group, the purpose of which is to bring the compression process closer to the isothermal one (increasing the efficiency of the machine cycle) and reducing the thermal loads on the parts of the cylinder piston pair. The latter is necessary to reduce thermal deformations and increase the service life of valve group parts and sealing devices, especially if they are made of polymer compositions, most of which cannot withstand operation at temperatures above 120-140 degrees Celsius.
Perspectives
Cooling of the cylinder piston group of the compressor is an indispensable condition for the efficiency of its cycle and a sufficiently high service life of the machine, especially in the non-lubricated version. This article shows possible options for creating autonomous efficient liquid cooling systems that do not require the presence of liquid coming from an external source. This is especially important for mobile compressor machines of small and medium capacity. The basic principles of building such systems, which require scientific substantiation and experimental verification, have been positively tested. All this makes it possible to introduce them into industrial designs.
Grigory Nesterenko
Omsk State Technical University
Read the Original
This page is a summary of: Hydraulic systems for independent cooling of low-flow piston compressors, Omsk Scientific Bulletin, January 2018, FSB EIHE Omsk State Technical University,
DOI: 10.25206/1813-8225-2018-161-8-18.
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