Cooling, heating and power PVT direct-current heat pump triple co-generation system and operation method

Abstract

The invention relates to a combined cooling heating and power PVT direct-current heat pump triple co-generation system which comprises a combined cooling heating and power PVT direct-current heat pump system which comprises a plate type evaporator, an outdoor air cooling evaporator, an indoor air cooling evaporator, a direct-current inverter compressor, a condenser and a heat preservation water tank. The direct-current inverter compressor and the condenser are connected to form a main path; the plate-type evaporator, the outdoor air-cooled evaporator and the indoor air-cooled evaporator are respectively connected with the main path in series to form first, second and third heat pump working medium loops; the solar photovoltaic photo-thermal system comprises a photovoltaic module heat collector; and the plate-type evaporator is connected in series with the heat exchange medium side of the photovoltaic module heat collector to form a medium loop. The invention further relates to an operation method, and connection and disconnection of the medium loop and the heat pump working medium loop are controlled by judging the temperature difference between the heat exchange medium temperature of the photovoltaic module heat collector and the environment temperature. The solar energy and air energy dual-heat-source operation is utilized to improve the performance, and meanwhile the domestic hot water requirement, the cooling capacity requirement and the low-power electric appliance electricity utilization requirement are met.

Description

technical field [0001] The invention relates to the technical field of heat pump hot water production, in particular to a cold-heat-electricity PVT direct-current heat pump triple supply system and an operation method. Background technique [0002] Air source heat pump is an energy-saving device that utilizes high-level energy to transfer heat from low-level heat source air to high-level heat source. The technical performance of the air source heat pump mainly depends on the temperature of the air in the environment and the heat exchange efficiency of the system. Through the four-way reversing valve, it can generally have two modes of cooling and heating. The main advantages of the air source heat pump technology are: the air source is convenient and easy to obtain, inexhaustible and inexhaustible; no cooling water system is required, and the installation and use are simple; it does not cause pollution to the environment. However, the system performance is greatly affected ...

AI Technical Summary

Problems solved by technology

[0004] The invention patent with the publication number CN 201721042232.9 discloses a combined cooling and heating device driven by natural gas. Although it can also be used for combined cooling and heating, the system needs to burn natural gas for heating, and the operating cost is significantly higher. At the same time, it generates a greenhouse Gas, not energy-saving and environmentally friendly

In addition, this system is suitable for indoor use and is not convenient for outdoor use.

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