Machine-pump combined drive enthalpy-increasing type PVT heat pump household power generation, heating, cooling and hot water quadruple combined supply system

Abstract

The invention belongs to the technical field of solar photovoltaic photo-thermal, and provides a machine-pump combined drive enthalpy-increasing type PVT heat pump household power generation, heating, cooling and hot water quadruple combined supply system which comprises a refrigerant system, a hot / cold water supply system, a domestic hot water system and a power supply system. By controlling start and stop of an air supply type compressor, a fluorine pump, a four-way valve and an electronic expansion valve in the refrigerant system and a water pump in the water system and opening and closing of an electromagnetic valve of the refrigerant system and an electric valve of the water system, five functions of heating and power supply, cooling and power supply, power supply and domestic hot water supply, heating and power and domestic hot water supply, and cooling and power and domestic hot water supply can be achieved, and heating in winter, cooling in summer, and supplying of domestic hot water and power throughout the year are achieved for unit families. The system has multiple purposes, is high in utilization rate and low in operation cost, has important value in the fields of solar energy technology research and engineering application, has important significance in building energy conservation and application of renewable energy sources, and assists in early carbon neutralization in the building field of China.

Description

technical field [0001] The invention belongs to the field of solar photovoltaic photothermal technology, in particular to a four-way combined power supply system for household power generation, heating, cooling and hot water of a PVT heat pump household with combined drive and enthalpy increase. Background technique [0002] Solar energy has gradually become an important substitute for fossil energy due to its characteristics of being the most widely distributed, easy to obtain, huge stored energy, and clean and non-polluting. The comprehensive utilization of solar energy is an effective way to solve the problems of energy shortage and environmental pollution in the construction field. Heating in winter, cooling in summer, and domestic hot water and electricity throughout the year have gradually become the most basic needs of most unit households in our country. However, the existing solar thermal utilization and photovoltaic power generation technologies have single function...

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Problems solved by technology

[0005] However, the PVT heat pump system in the above patent is difficult to meet the cooling and heating needs of unit households under the most unfavorable working conditions. For example, when the solar radiation is weak in winter, the heating performance of the system is poor, and it is difficult to meet the indoor heat load demand.

In addition, when the solar radiation is strong, the external high-temperature solar heat source can heat tap water without power, and heating or preheating can be realized without a heat pump system. Therefore, the PVT heat pump system driven by a compressor works well in this operating mode. High consumption

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