Absorptive and thermoelectric refrigerating cooperative assisted supercooling CO2 refrigerating system for ship

Abstract

The invention discloses an absorptive and thermoelectric refrigerating cooperative assisted supercooling CO2 refrigerating system for a ship. A solution outlet of an absorber is connected to a solution inlet of a generator through a solution pump, a refrigerant steam outlet of the generator is connected to a refrigerant inlet of an evaporator II through a condenser and a pressure regulating valve, and a refrigerant inlet of the evaporator II is connected to an adsorber; the generator is connected to an adsorber through a throttling valve; a compressor outlet, a gas cooler, a thermoelectric cooler, the evaporator II, an expander and an evaporator I inlet are successively connected, and the evaporator I outlet is connected to the compressor inlet; a power supply manager is separately connected to the expander and the thermoelectric supercooler. By recycling waste heat and waste pressures, CO2 at the outlet of the gas cooler is cooled, so that cooling of CO2 is easily realized. Moreover, the temperature of CO2 can be reduced to below the environmental temperature, so that irreversible loss in a high pressure CO2 throttling process can be remarkably reduced.

Description

technical field [0001] The present invention relates to the field of absorption refrigeration technology and thermoelectric refrigeration technology, in particular to an absorption refrigeration and expander cooperative auxiliary supercooled CO 2 Transcritical refrigeration cycle ocean-going ship refrigeration system. Background technique [0002] In today's world, most of the resources available to human beings are non-renewable resources, and energy crises of varying degrees are gradually appearing around the world. In recent years, international oil prices have fluctuated greatly. In addition, the excessive use of fossil energy has greatly damaged the environment on which human beings rely for survival and development. Therefore, energy saving and environmental protection have become a hot topic in today's era. Ocean-going ships have certain particularities. On the one hand, they consume a lot of energy, and the thermal efficiency of the main engine of the ship is not ...

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Problems solved by technology

However, due to CO 2 The critical temperature is only 31.1°C, and the critical pressure is as high as 7.38MPa. Its operating pressure is high and the throttling loss is large, resulting in CO 2 The efficiency of transcritical cycle is lower than that of conventional refrigerant system, which is the main reason to limit its popularization and application

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