Adaptively-matched solar auxiliary air source heat pump device

Abstract

The invention provides an adaptively-matched solar auxiliary air source heat pump device. The device comprises a refrigerant circulation loop subsystem, a solar hot water circulation loop subsystem and a user hot water loop subsystem, wherein the refrigerant circulation subsystem is the core of the whole system and controls the energy conversion and heat transmission; the refrigerant circulation subsystem comprises a compressor (1), an indoor condenser (2), a capillary pipe (3) and a sleeve heat exchanger (4); a refrigerant outlet of the indoor condenser (2) is connected with an inlet of the capillary pipe (3); an outlet of the capillary pipe (3) is connected with an in-pipe refrigerant inlet (11) of the sleeve heat exchanger (4); and an in-pipe refrigerant outlet (13) of the sleeve heat exchanger (4) is connected with a gas inlet of the compressor (1). Through the invention, the heat in the solar air source heat pump system can be reasonably distributed, and the energy consumption of the building can be saved.

Description

technical field [0001] The invention relates to a device for improving the operating performance of the heat pump in winter by assisting an air source heat pump with solar energy, and belongs to the field of building energy saving and refrigeration engineering. Background technique [0002] The air source heat pump is a heat pump air conditioning system device that uses the heat source in the air to supply heat from a low-grade heat source to a high-grade heat source by inputting a small amount of high-grade heat source. Air source heat pumps are widely used in modern buildings due to their simple structure, low operating costs, and easy installation and use. In the field of green buildings, the air source heat pump air conditioning system plays an important role with its advantages. During heating operation in winter, the refrigerant absorbs the heat in the air on the side plate of the outdoor evaporator, and then enters the indoor condenser side to provide heat or make ho...

AI Technical Summary

Problems solved by technology

Whether these systems are direct expansion or indirect expansion, there are problems of low efficiency at night or in rainy weather, or the lack of heat absorbed by the solar collector plate, which leads to the frosting of the outer fins of the outdoor evaporator tube. At the same time, in view of the solar energy itself Unstable characteristics, the heat collected by the solar collector plate is difficult to match the heat required by the evaporator side, which leads to the constant questioning of the stable operation of the solar air source heat pump system

When the solar collector board receives solar radiation, the surface material often undergoes certain special treatment, so that the surface of the material absorbs solar radiation and reduces the surface emissivity; at the same time, the heat conduction and convection on the surface of the solar collector board are also affected. Weakening, the heat dissipation at night and in rainy weather is reduced. The disadvantage of this type of solar air source heat pump is that the system cannot work normally at night and in rainy weather. In the most extreme case, the low temperature and low pressure in the outdoor evaporator The refrigerant continuously absorbs the heat in the solar water circulation system, and the heat that can be absorbed by the solar collector plate is insufficient, resulting in a continuous decrease in the temperature of the internal working medium. The heat pump evaporator cannot absorb any heat from the solar water circulation system, and the system operation deteriorates. Compression machine can also cause serious damage

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