Solar driven absorption supercooling CO2 transcritical double-stage compression refrigerating system

Abstract

The invention discloses a solar driven absorption supercooling CO2 transcritical double-stage compression refrigerating system. A solar driven absorption refrigerating system of the solar driven absorption supercooling CO2 transcritical double-stage compression refrigerating system comprises a circulating heater and an absorption refrigerating system body. The circulating heater comprises a heat collector, a heat storage tank and water pumps. The absorption refrigerating system body comprises an evaporative condenser, an absorber, a solution pump, a throttle valve, a solution heat exchanger, agenerator and a condenser, and used for supercooling a CO2 transcritical double-stage compression refrigerating system, the refrigerating capacity is increased, and the system performance is improved. The CO2 transcritical double-stage compression refrigerating system comprises a low-temperature evaporator, a medium-temperature evaporator, a low-temperature compressor, a high-temperature compressor, a parallel compressor, a gas cooler, a condensing evaporator, a high-pressure throttle valve, a gas-liquid separator, a medium-pressure throttle valve, a low-pressure throttle valve and a bypass valve. The two systems are coupled and are supplementary to each other, and the problem that the performance of the CO2 double-stage compression system degrades as the environment temperature rises insummer is solved.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a solar-driven absorption supercooled CO 2 Transcritical two-stage compression refrigeration system. Background technique [0002] With the joint efforts of the international community, developed countries and some developing countries have made corresponding commitments to control the destruction of the ozone layer and the greenhouse effect, among which the production of high "ODP" and high "GWP" industrial chemical products has been strictly restricted. Among industrial products, refrigerants have been widely used in the past 100 years as industrial products used in large quantities in refrigeration and air-conditioning systems. Under the background of controlling ozone layer depletion and greenhouse effect, the production and application of refrigerants are also controlled accordingly. At present, the HCFC refrigerants used in large quantities will be reduced to mainte...

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Problems solved by technology

However, its shortcomings are also very obvious. The efficiency of the refrigeration system is low and the system operating pressure is high. Of course, the problem of high operating pressure can be solved by increasing the pressure capacity of the pressure vessel during the processing of the equipment, but the problem of low system operating efficiency cannot be solved by itself. In addressing, the need for CO 2 Refrigeration and heat pump systems can be improved to increase efficiency

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