Low-grade energy driving and mechanical work driving combined heat pump or refrigerating system

A refrigeration system, low-grade technology, applied in the direction of heat pumps, refrigerators, refrigeration components, etc., can solve the problems of discontinuous solar radiation itself, high heat source temperature requirements, low efficiency, etc., to achieve high reliability, save initial investment, and system simple effect

Inactive Publication Date: 2009-10-14
ZHEJIANG UNIV
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Problems solved by technology

[0004] For conventional low-grade energy, especially solar heat driven heat pumps, low efficiency of refrigeration cycles, high temperature requirements for heat sources, and difficulty in adap

Method used

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  • Low-grade energy driving and mechanical work driving combined heat pump or refrigerating system

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Example Embodiment

[0016] As shown in the attached figure, the low-grade energy collector 1 and generator 2, the first condenser 3, the refrigerant storage 4, the first throttle valve 5, Condensation evaporator 8, absorber 9, liquid reservoir 10, solution pump 11, solution heat exchanger 7, generator 2 are connected sequentially, and the high pressure end of compressor 12 is connected with solution heat exchanger 7, second condenser 6, condensation The evaporator 8, the three-way valve 17, the second throttle valve 15, the winter evaporator 13, and the low-pressure end of the compressor 12 are connected sequentially, and the three-way valve 17 is connected with the third throttle valve 16, the summer evaporator 14, and the compressor 12 The low-pressure ends are connected sequentially, and the concentrated solution outlet of the generator 2 is connected with the solution heat exchanger 7 and the absorber 9 in sequence.

[0017] The low-grade energy collector 1 is a collector of low-grade energy ...

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Abstract

The invention discloses a low-grade energy driving and mechanical work driving combined heat pump or refrigerating system. A low-grade energy collector is connected with a generator, a first condenser, a refrigerant agent storage device, a first throttle valve, a condensation evaporator, an absorber, a liquid storage device, a solution pump, a solution heat exchanger and a generator in sequence; the high-pressure end of a compressor is connected with the solution heat exchanger, a second condenser, the condensation evaporator, a three-way valve, a second throttle valve, a winter evaporator and the low-pressure of the compressor in sequence; the three-way valve is connected with a third throttle valve, a summer evaporator and the low-pressure end of the compressor in sequence; and the concentrated solution outlet of the generator is connected with the solution heat exchanger and the absorber in sequence. The combined heat pump or refrigerating system has the advantages of all low-grade heat pumps and refrigerating systems. A compression heat pump and the refrigerating system are combined, and when the low-grade energy is sufficiently supplied, the COP of the system is greatly improved; when the low-grade energy is not sufficiently supplied, the system can be effectively operated; and when the low-grade energy is not supplied at all, the system can also be stably operated.

Description

technical field [0001] The invention relates to a compound heat pump or refrigeration system driven by low-grade energy and mechanical work. Background technique [0002] my country's reserves of fossil energy such as oil, natural gas, and coal are very limited on a per capita basis. Moreover, it is relatively arid, the land is severely desertified, and the environmental tolerance is relatively weak. The development and utilization of fossil energy is likely to bring very adverse effects on the environment. Therefore, the effective development and utilization of low-grade energy can make up for the shortage of fossil energy and improve the energy structure, which will have high social and economic value. [0003] Air-conditioning heat pumps and refrigeration systems are major energy consumers, and their power consumption accounts for about 15% of the total power consumption in society. But in industry and other fields, a lot of low-grade energy is not well utilized. In add...

Claims

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Application Information

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IPC IPC(8): F25B25/02F25B27/00F25B30/06
Inventor 陈光明唐黎明刘利华何一坚
Owner ZHEJIANG UNIV
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