Compression-ejection compound refrigerating system using Knudsen compressor

Abstract

The invention discloses a compression-ejection compound refrigerating system using a Knudsen compressor. The compression-ejection compound refrigerating system comprises a residual or waste heat exchanger, a first ejector, a second ejector, a condenser, a first heat regenerator, a first throttling valve, an evaporation condenser, a first Knudsen compressor, a second Knudsen compressor, a second heat regenerator, an evaporator and a second throttling valve; the system is divided into a compression refrigerating part and an ejection refrigerating part which are connected with each other through a common evaporation condenser and the evaporator; the ejectors are driven by the residual or waste heat; the two Knudsen compressors are driven by the residual or waste heat or the solar energy; the overall system is excellent in energy conservation and environmental protection performance; the system is free of motion part and free of lubrication oil; due to the arrangement of the two heat regenerators, the superheat degrees of refrigerants entering the Knudsen compressors can be respectively increased; the phenomenon that the refrigerants are liquefied in the Knudsen compressors can be avoided; super-cooled refrigerants for compression refrigeration and ejection refrigeration are combined and flow into the evaporator, so that the efficiency of the overall system is improved.

Description

technical field [0001] The present invention relates to the field of refrigeration, in particular to a refrigeration system utilizing Knudsen compression and injection compounding, which is driven by residual (waste) heat and solar energy. Background technique [0002] In 1990, the mechanical compression-injection refrigeration cycle and the supercharged injection refrigeration cycle were proposed by Kornhauser and Sokolov, respectively. Since then, these two refrigeration cycle theories have been widely studied and further improved. The mechanical compression-ejection refrigeration cycle initially uses the ejector to recover the expansion work in the mechanical compression refrigeration cycle to reduce the power consumption of the mechanical compressor; after that, the ejector is used to recover the heat of the superheated refrigerant at the outlet of the mechanical compressor, reducing condensation. the resulting heat loss. The supercharged injection refrigeration cycle u...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a compression-injection compound refrigeration system using Knudsen compressor, thereby overcoming the shortcomings of existing injection refrigeration efficiency and mechanical compression refrigeration consumption of a large amount of fossil energy

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