Loop heat pipe/dual direct-expansion type solar heat pump heating system

A loop heat pipe, direct expansion technology, applied in heating systems, residential hot water supply systems, heating methods, etc., can solve the problems of solar heat pump performance degradation and low hot water temperature, and achieve efficient all-weather hot water supply. , Efficient heat transfer, simple overall structure effect

Inactive Publication Date: 2017-09-15
YANSHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the low temperature of hot water prepared by the solar photovoltaic photothermal heat collection system and the decrease in the operating performance of the solar heat pump, the present invention overcomes the shortcomings in the prior art and provides a loop heat pipe / double direct expansion solar heat pump heat supply system

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  • Loop heat pipe/dual direct-expansion type solar heat pump heating system

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0020] A loop heat pipe / double direct expansion solar heat pump heating system of the present invention, such as figure 1 As shown, the system includes a condenser 1, a first valve 2, a solar photovoltaic-loop heat pipe evaporator 3, a second valve 4, a thermal expansion valve 5, a third valve 7, a fourth valve 6, a compressor 11, a Five valves 8, flat fin tube type plate collector evaporator without glass cover plate 9 and sixth valve 10; the liquid inlet of condenser 1 is connected with the liquid outlet of compressor 11 and the outlet of second valve 4 respectively The liquid port is connected, the liquid outlet of the condenser 1 is connected with the liquid inlet of the first valve 2 and the liquid inlet of the thermal expansion valve 5 respectively; the liquid outlet of the first valve 2 is connected with the solar photovoltaic-loop heat p...

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Abstract

The invention relates to a loop heat pipe / dual direct-expansion type solar heat pump heating system which comprises a condenser, a first valve, a solar photovoltaic-loop heat pipe evaporator, a second valve, a thermal expansion valve, a third valve, a fourth valve, a compressor, a fifth valve, a plain-finned tube type flat plate heat collection evaporator with no glass cover plate and a sixth valve. The operation modes of the heating system comprise a loop heat pipe mode, a direct-expansion type solar heat pump mode and a direct-expansion type solar / air energy dual-heat-source heat pump mode. The direct-expansion type solar heat pump operation mode overcomes the defect that an air energy heat pump is low in operation efficiency or cannot be operated in low temperature environment and overcomes the defect that an existing solar heat pump system and a heat pipe / solar heat pump composite system cannot be operated when sunlight is insufficient, and system performance coefficients are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of building energy saving, and relates to a loop heat pipe / double direct expansion solar heat pump heating system. Background technique [0002] The water temperature prepared by the solar photovoltaic photothermal heat collection system is generally lower than the outlet water temperature of the traditional solar hot water system. In addition to the influence of weather factors, the hot water prepared by the solar photovoltaic photothermal heat collection system usually does not meet the requirements for building heating. temperature requirements. The operating performance of air source heat pumps is greatly affected by the outdoor temperature, especially in cold and severely cold regions in winter, there will be frosting problems, which will cause the performance of the heat pump to decline or even fail to work normally. In the prior art combining heat pipe, solar energy and heat pump: [0003] "Acta Che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D15/04F25B41/06F24D17/02F25B41/31
CPCF24D15/04F24D17/02F25B41/31
Inventor 李洪孙跃
Owner YANSHAN UNIV
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