Questions about piston compressors
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Piston compressors use multi-stage compression mainly for the purpose of ( ). A. Improve cylinder utilization rate B. Balance the forces acting on the piston C. Increase pressure D. Improve rotational stability
It should be for “C”. The other three should be the conditions to be met on a multi-level basis.
The answer provided in the textbooks we were given is A, but we all think it should be C; reducing the pre-clearance volume of the cylinder is what improves its utilization rate, while multi-stage compression simply serves to increase the pressure
Personal understanding: It is possible to use the cylinder compression theory directly, but the temperature resulting from compression consumes energy; to increase the useful work output, setting an appropriate number of cylinders based on a certain compression ratio helps to improve the efficiency of use of the cylinders