Circulating device combining diffusing absorption-type refrigeration and vapor compression refrigeration

Abstract

The invention provides a circulating device combining diffusing absorption-type refrigeration and vapor compression refrigeration. The circulating device is characterized by comprising a compressor (1), a generator (2), a first condenser (3), a throttling valve (4), a first evaporator (5), a second condenser (6), a second evaporator (7), a gas heat exchanger (8), an absorption device (9), a liquid storage device (10), a liquid heat exchanger (11) and a hydrogen tank (12); a vapor compression refrigeration circulating side and the exhaust port of the compressor (1) are connected with the inlet of the heat exchanger; the outlet of the heat exchanger is connected with the inlet of the first condenser (3); the outlet pipeline of the first condenser (3) is connected with the inlet of the throttling valve (4) through the second evaporator (7); the outlet of the throttling valve (4) is connected with the inlet of the first evaporator (5); and the outlet of the first evaporator (5) is connected with an air suction port of the compressor. According to the invention, the refrigeration coefficient of the refrigerating system can be improved.

Description

technical field [0001] The invention relates to a combination device and method of diffusion absorption refrigeration and vapor compression refrigeration cycle, belonging to the field of refrigeration and low temperature. Background technique [0002] At present, due to the shortage of energy supply or the increase in price, which affects economic development, how to improve the utilization rate of energy has become a top priority. Vapor compression refrigeration systems are widely used in various fields such as air conditioning, food refrigeration, industrial production process control, etc. Refrigeration systems consume a lot of energy, so it is of great significance to improve the refrigeration coefficient of vapor compression refrigeration systems. [0003] Increasing the subcooling degree of the liquid refrigerant at the outlet of the condenser is an important means to improve the refrigeration coefficient of the vapor compression refrigeration cycle. Under the conditio...

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Problems solved by technology

The commonly used regenerative cycle is to exchange heat between the low-temperature, low-pressure refrigerant at the outlet of the evaporator and the high-temperature, high-pressure refrigerant at the outlet of the condenser, so as to obtain a certain degree of subcooling, but the improvement of the degree of subcooling by the regenerative cycle is limited. For some refrigerants (ammonia and R22 (chlorodifluoromethane)), the refrigeration coefficient will drop, and the compressor suction temperature will be too high, and the gas delivery will decrease, which will also cause the system performance to decline, which will affect the entire system. It is unfavorable to use other supercooling methods, which require a cooling medium, and the ambient temperature determines that it is difficult for these supercooling methods to reduce the supercooling temperature below the ambient temperature, and obtaining a cold source for supercooling also requires additional energy consumption

[0004] In the actual steam refrigeration cycle, the refrigerant gas at the outlet of the compressor has a high degree of superheat, and the heat in the superheated steam is taken away in the condenser, and all of it is released into the environment and the cooling medium, and is not obtained. Reasonable utilization has resulted in the waste of high-level energy in this section, and also caused thermal pollution to the environment

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