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Central air conditioner combining solar energy ejecting cooling system

A technology of solar energy and ejector, which is applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problems of low efficiency of solar ejector refrigeration, achieve the effects of increasing adjustability, improving cycle thermal efficiency, and reducing system cost

Active Publication Date: 2013-06-26
广西北联机电科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] The efficiency of solar jet cooling is low, which is an important reason why it has not been widely used; in addition, solar jet cooling can only operate during the day and is greatly affected by the climate. To apply solar jet cooling on a large scale, it must solve these two problems

Method used

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  • Central air conditioner combining solar energy ejecting cooling system

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Embodiment Construction

[0021] The internal mechanism of the main injector (1) and the pressure regulating injector (2) in this system is that the working fluid passes through the Laval nozzle to form a supersonic airflow, injecting low-pressure refrigerant vapor, and the two fluids enter the mixing chamber of the injector to fully Mixing is accompanied by energy exchange, and then the mixed fluid enters the diffuser, the kinetic energy continues to decrease, and the pressure continues to increase until the exit of the injector.

[0022] The specific implementation of this system is:

[0023] The liquid refrigerant coming from the condenser is pressurized by the refrigerant pump (8) and used as the working fluid of the preheating ejector (9), and the higher-temperature gaseous refrigerant at the outlet of the compressor (4) is used as the injection fluid, and the two The phase fluids are mixed by the preheating ejector (9) and accompanied by energy exchange. The essence is to recover the waste heat g...

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Abstract

The invention relates to a central air conditioner combining solar energy ejecting cooling device. The device comprises a main ejector, a pressure adjustment ejector, a preheating ejector, an evaporator, a condenser, a compressor, a throttle valve, a generator, a heat collector, a regulating valve, a freezing medium pump and the like. The system is characterized in that mechanical compressor type cooling is assisted by solar energy ejecting cooling so that the purpose of energy saving is achieved; the two cooling methods share the evaporator and the condenser so that system cost is effectively saved; pressure of driving fluid of the main ejector can be adjusted through the pressure adjustment ejector so that when solar energy radiation waves, the main ejector is still steady in a working condition and efficient in operation; and the preheating ejector is arranged between the generator and the freezing medium pump and lower temperature liquid freezing medium cycle fluid is heated by a gas freezing medium with higher temperature in an outlet of the compressor, namely, waste heat generated by a central air conditioner can be recycled so that energy using rate of the system can be improved.

Description

technical field [0001] The invention relates to the field of solar spray refrigeration, in particular to the field of a low-cost, high-efficiency central air conditioner combined with solar spray refrigeration. Background technique [0002] Ejection refrigeration technology was proposed by Blanc and Parsons in 1901, but it has not been widely used because its efficiency is much lower than that of mechanical compression refrigeration system. In 1980, Wali first proposed the jet refrigeration system driven by solar energy. With the further aggravation of the global energy crisis, the utilization of renewable energy represented by solar energy has been paid more and more attention. Therefore, solar jet refrigeration has been extensively studied. . [0003] The efficiency of solar jet cooling is low, which is an important reason why it has not been widely used; in addition, solar jet cooling can only operate during the day and is greatly affected by the climate. To apply solar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B25/00
Inventor 李刚吕智林黄惠兰邱萌萌许李
Owner 广西北联机电科技有限公司
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