Solar assisted air energy water heart system and control method thereof

Abstract

The invention provides a solar assisted air energy water heart system and a control method thereof. The system comprises a compressor, a water side heat exchanger, a first heat exchanger, and a solarwater heater, one end of the first heat exchanger communicates with an air suction pipe of the compressor, the other end of the first heat exchanger can communicate with the water side heat exchanger,the water side heat exchanger communicates with an exhaust pipe of the compressor, the compressor, the water side heat exchanger and the first heat exchanger communicate through a refrigerant pipeline, a first throttling device is mounted between the first heat exchanger and the water side heat exchanger, the solar water heater communicates with the first heat exchanger through a communication pipeline, and in the first heat exchanger, the communication pipeline and a refrigerant pipeline are subjected to heat exchange. According to the system and the control method thereof, under the conditions of low temperature and weak solar illumination, the heat pump hot water making capacity and energy efficiency can be effectively improved, hot water use needs of people can be met, the problem that under the low-temperature condition in winter, the capacity and the energy efficiency of the air energy water heater are seriously reduced can be solved, and the effects of energy saving, emission reducing and continuous heat supply are achieved.

Description

technical field [0001] The invention relates to the technical field of heat pumps, in particular to a solar-assisted air-energy water heater system and a control method thereof. Background technique [0002] At present, air-energy water heaters are widely used in heating and hot water projects in the north due to their high energy efficiency and no pollution. Air-energy water heaters mainly absorb heat from the air, but the ambient temperature in winter in the north is low, resulting in serious attenuation of its capacity and energy efficiency. [0003] Solar water heaters use clean solar energy without electricity and are widely used. However, in northern winter nights or in cloudy and snowy weather, there is a problem of freezing and freezing, and it cannot be continuously heated, so it is rarely used in winter. There is a structure that uses solar water heaters and heat pump systems to heat the water in the water tank, but the two schemes of this structure (solar water ...

AI Technical Summary

Problems solved by technology

However, in the northern winter night or in cloudy and snowy weather, there is a problem of freezing and freezing, and it cannot be continuously heated, so it is rarely used in winter

There is a structure that uses solar water heaters and heat pump systems to heat the water in the water tank, but the two schemes of this structure (solar water heaters and heat pump systems) are simply combined, and each works independently to produce hot water. However, in low temperature conditions such as winter or under extreme weather conditions such as weak sunshine, it cannot effectively use solar energy to produce hot water, nor can it efficiently use heat pumps to produce hot water, and its hot water production capacity is greatly weakened

[0004] Due to the serious problem of energy efficiency attenuation in the air energy heat pump water heater in the low temperature environment in the prior art, the solar water heater has the problem of freezing and freezing in the northern winter night or in cloudy and snowy weather, and cannot continue heating, and the solar water heater and the heat pump system are simple. The scheme of combined heating water tank has a weak ability to produce hot water under the condition of low temperature and weak sunshine, and cannot achieve technical problems such as precise timing control of water temperature. Therefore, the present invention researches and designs a solar-assisted air-energy water heater system and its Control Method

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