Combined heating and cooling solar-assisted heat pump system

Abstract

The invention discloses a combined heating and cooling solar-assisted heat pump system. The system comprises a solar heat collection system and a heat pump system, wherein the solar heat collection system comprises a micro-channel flat plate heat pipe heat collector, a connecting pipeline, a water tank and a circulating water pump; the heat pump system comprises an evaporator, a reversing valve, a compressor, a condenser and a throttling device; the micro-channel flat plate heat pipe heat collector is connected with the water tank and is connected with the circulating water pump through the connecting pipeline; the circulating water pump is connected with the water tank; the evaporator is arranged in the water tank; one end of the evaporator is connected with the compressor through the reversing valve; the compressor is connected with the throttling device through the condenser; the throttling device is connected with the other end of the evaporator which is placed in the water tank. The micro-channel flat plate heat pipe heat collector can be laid on the outer surface of a normal building wall (or balcony) or used in place of the normal building outer wall (or balcony), so the building energy consumption can be greatly reduced and zero energy consumption (or close to zero energy consumption) can be realized, and the utilization rate of renewable energy sources (solar energy) is increased.

Description

technical field [0001] The invention is a solar auxiliary heat pump system for combined cooling and heating, which belongs to the innovative technology of the solar auxiliary heat pump system for combined cooling and heating. Background technique [0002] Solar water heaters have been widely used all over the world due to their advantages of energy saving, environmental protection, simple structure, easy maintenance and high reliability. At present, according to the type of collector, solar water heater products are mainly divided into two categories: vacuum tube type and flat plate type. Although the vacuum tube type has the outstanding advantages of vacuum insulation and mature technology, its main type of all-glass tube solar water heater has defects such as tube explosion, scaling, no pressure, and difficult building integration; Maintenance, long service life and other advantages, however, there are many problems to be solved in the existing ordinary flat plate type: ...

AI Technical Summary

Problems solved by technology

Although the vacuum tube type has the outstanding advantages of vacuum insulation and mature technology, its main type of all-glass tube solar water heater has defects such as tube explosion, scaling, no pressure, and difficult building integration; Maintenance, long service life and other advantages, however, there are many problems to be solved in the existing ordinary flat plate: scaling problem in the tube, freezing problem in the tube, air corrosion problem in the tube and large surface heat loss

[0003] In order to improve the performance of the flat-plate solar water heater, the heat pipe is combined with the flat-plate type, but on the core heat collecting element, the problem is concentrated in the combination of the circular copper heat pipe and the aluminum fin, and the defect is that the heat pipe is made of copper, and the cost is high; The welding process between the plate cores requires high requirements, is difficult, and requires a large initial investment; the heat pipes are aluminum fins, and the heat collection efficiency is greatly affected by the efficiency of the fins

In addition, the heat pipe inserted into the water tank is prone to fouling when in contact with water, and the temperature in the air is high, and it is easy to overheat, which will cause the heat pipe to fail. In this way, the performance of the water heater is difficult to stabilize and the service life is not long, thus affecting the large-scale popularization and promotion of the corresponding water heater.

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