Absorption compression interactive re-cooling type composite refrigerating system and method

Abstract

The invention discloses an absorption compression interactive re-cooling type composite refrigerating system and method. A heat collector is sequentially connected to a first hot water pump and a heatstorage box; the heat storage box is sequentially connected to an absorption type refrigerating machine and a second hot water pump; the absorption type refrigerating machine is sequentially connected to a first cooling tower, a first cooling water pump and a secondary evaporator; a primary compressor is sequentially connected to a condenser, a sub-cooler, a primary throttle valve and the primaryevaporator; the secondary compressor is sequentially connected to the condenser, the sub-cooler, the secondary throttle valve and the secondary evaporator; a second cooling tower is sequentially connected to a second cooling water pump, a first re-cooling valve, a cold storage box and the condenser; the second cooling tower is sequentially connected to the second cooling water pump, a second re-cooling valve and the condenser; the cold storage box is sequentially connected to a refrigerating water pump and the absorption type refrigerating machine; and the cold storage box is sequentially connected to a super-cooling valve, a super-cooling water pump and the sub-cooler. The absorption compression interactive re-cooling type composite refrigerating system realizes that a refrigeration house refrigerating system is free of ammoniation, and also improves heat economic performance.

Description

technical field [0001] The invention relates to a refrigeration system, in particular to an absorption compression interactive recooling compound refrigeration system and method. Background technique [0002] With the continuous improvement of people's lives and the rapid development of cold chain logistics, the demand for large-scale cold storage as an important infrastructure for storage of food, goods, and medicines in cold chain logistics is also increasing year by year. Because the current cold storage refrigeration system mainly uses ammonia as the working fluid, and ammonia is a highly toxic substance, so once an ammonia leakage accident occurs in the cold storage, it will seriously affect the safety of people's lives and cause immeasurable economic losses. Therefore, the risk management and control of ammonia leakage accidents in the refrigeration system of cold storage has gradually attracted people's attention. [0003] Although reducing the amount of ammonia in t...

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Problems solved by technology

However, from an economic point of view, the introduction of solar refrigeration will greatly increase the initial investment cost, thus seriously deteriorating the economic performance of the system, resulting in a significantly longer payback period, which has become a key problem and a major obstacle in the engineering application of solar refrigeration technology in cold storage refrigeration equipment

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