Cold circulation refrigeration system

Abstract

The invention relates to a cold circulation refrigeration system. The method of pressurizing low-temperature liquid refrigerant with a liquid circulating pump is adopted to supply cold, the refrigerant enters a cold-consuming unit to supply cold after the temperature of the refrigerant is increased by a heat exchanger, the effluent refrigerant returns into a refrigerant storage tank after the pressure and temperature of the refrigerant are decreased by a throttle valve, and in order to reduce irreversible loss in the process of cold transfer, a necessary number of heat exchangers are arranged to reduce the loss of the available energy of cold. Because the cold circulation refrigeration system does not need the circulating cooling water system in the conventional vapor compression type refrigeration system, the maintenance cost and the operation cost are greatly reduced, the energy-saving rate of the unit with the same refrigerating capability is increased by more than 30 percent in comparison with the energy-saving rate of the conventional unit, and therefore economic, social and environmental benefits are remarkable.

Description

technical field [0001] The invention relates to a cold cycle refrigeration device, specifically belonging to the technical field of refrigeration. Background technique [0002] Modern refrigeration technology, as a science, was developed in the middle and late nineteenth century. Before that, back to the ancestors of mankind, people knew the use of cold and simple artificial refrigeration very early: using the cellar as a cold storage room , has used spring water to cool storerooms for 5,000 years. [0003] After the twentieth century, refrigeration technology has made greater development: in 1910, the domestic refrigerator came out, and in 1917 it began to be put on the market as a commodity in the United States. In 1930, the emergence of freon refrigerants and the use of freon refrigerators brought new changes to refrigeration technology. In the 1970s, people conducted a lot of research on mixed working fluids, and began to use azeotropic mixed working fluids, which open...

AI Technical Summary

Problems solved by technology

[0032] 2) The thermal efficiency of the Carnot cycle can only be less than 1, never equal to 1, because T 1 =∞ or T 2 =0 is impossible

[0035] 5) The limit point of the Carnot cycle is the atmospheric ambient temperature, and the Carnot cycle does not give a clear answer to the refrigeration process cycle below the ambient temperature

[0037] However, using the basic theory of thermodynamics cannot give a concise, clear and intuitive explanation of the refrigeration cycle.

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