System for supplying cold to air conditioner by using cryogenic source cold energy

Abstract

The invention discloses a system for supplying cold to an air conditioner by using cryogenic source cold energy. The system is characterized by comprising a first heat exchanger (1), a second heat exchanger, a third heat exchanger (3), a chilled water circulating pump (4), a first three-way valve (5), a second three-way valve (6), a first valve (7), a second valve (8) and a refrigerating unit (9); after entering the first heat exchanger, a cold source liquid phase is heated by air conditioner chilled water to be completely gasified and heated, and the first valve is mounted on a heat source water supply pipe of the second heat exchanger; the cooled air conditioner chilled water is fed into an evaporator of the refrigerating unit through the chilled water circulating pump, is fed into an air conditioner user through the refrigerating unit to absorb heat and then enters the first heat exchanger to be cooled through the third heat exchanger, the air conditioner chilled water subjected to secondary cold absorption and cooling enters the refrigerating unit again, and circulation is conducted in this way. The system not only can efficiently recycle a large amount of cold energy, but also is safe and reliable, and has the advantages of continuous cold supply and high stability.

Description

technical field [0001] The invention relates to a cryogenic source cold energy application technology, in particular to a cold energy air-conditioning technology, in particular to a system in which the cryogenic source cold energy is used for air conditioning and cooling. Background technique [0002] Cryogenic generally refers to the temperature range of 233K~77K. 233K is generally the lower limit of the temperature that can be effectively achieved by single-stage vapor compression refrigeration, and 77K is the boiling point temperature of liquid nitrogen at atmospheric pressure. Common cryogenic sources within this temperature range include: liquid nitrogen, liquefied natural gas (LNG for short), liquid oxygen, liquid ethylene, etc. When used, the liquid-phase cold source needs to be heated and vaporized to normal temperature or the required temperature state. Most of the rewarming process uses air heating or water bath heating, so a large amount of cold energy is wasted...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to design a system for cooling energy from cryogenic sources for air conditioning in view of the existing problems of sufficient energy utilization and energy waste, which can not only efficiently recycle a large amount of cold energy, but also ensure the safety of the system Reliable, with the advantages of continuous cooling and high stability

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