Heat pump cooling/heating system of solar photovoltaic power generation system

Abstract

The invention discloses a heat pump cooling / heating system of a solar photovoltaic power generation system, comprising a solar photovoltaic panel and a working medium evaporator arranged below the solar photovoltaic panel. The working medium evaporator is sequentially connected with a three-way reversing valve, a working medium compressor, a working medium condenser and an electronic expansion valve to form a circulation loop. A working medium thermometer is arranged on the working medium evaporator. A hot water thermometer is arranged inside the working medium condenser. The working medium thermometer, the hot water thermometer and the electronic expansion valve are connected with a main control computer. While that the solar photovoltaic system works at optimal temperature is ensured, cooled heat can be recycled for heating, the solar energy utilization rate of the original system is improved greatly, the operation mode of solar photovoltaic power generation operation all the year is optimized, and the utilization rate of solar energy throughout the year is maximized. Moreover, the quality of energy can be improved through use of heat pumps, cooled heat at low temperature can be improved to a higher quality level to meet the requirements of life and heating temperature, and low-quality heat is recycled all year round.

Description

technical field [0001] The invention relates to a cooling / heating system, in particular to a heat pump cooling / heating system of a solar photovoltaic power generation system. Background technique [0002] At present, the production and operation technology of various solar photovoltaic power generation equipment in my country has matured and is widely used. As a power generation system, it is an extremely convenient and clean way to use solar energy. However, the defect of this solar energy utilization system is that the power generation efficiency of the system changes with the operating temperature of the photovoltaic panel, and the power generation efficiency also changes. When the operating temperature rises by 1°C, the power generation efficiency will drop by 0.4%. Generally speaking, when the solar light intensity is 1kW / m 2 0.8m 2 The power generation of the solar photovoltaic panel is about 160W when the working temperature is 20-25°C, and the remaining solar ener...

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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a heat pump cooling / heating system of a solar photovoltaic power generation system, which overcomes the low power generation efficiency and the cooling heat of solar photovoltaic panels in the prior art due to the influence of seasons on the working temperature of solar photovoltaic panels. waste of resources, the problem of

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