PVT heat pump system capable of achieving day and night time-division heat, power and cold supply through solar radiation and sky cold radiation

Abstract

The invention provides a PVT heat pump system capable of achieving day and night time-division heat, power and cold supply through solar radiation and sky cold radiation, and a photovoltaic power generation technology and a PVT heat pump technology which are relatively independent and mutually promoted in function are used simultaneously. Solar radiation energy and sky long-wave cold radiation energy are used as main energy resources of the system, and the energy is converted into electric energy, heat energy and cooling capacity through a PVT photoelectric-evaporation/condensation assembly in different modes at different times. The system integrates the various functions of power generation, heating, cooling and the like, equipment composition is simple, the equipment utilization rate is high, the energy saving effect is remarkable, the energy utilization rate is increased to the greatest extent, and the effects of achieving multiple purposes through the system and achieving day and night time-division heat, power and cold supply are achieved.

Description

Technical field [0001] The invention relates to a PVT heat pump system that utilizes solar photovoltaic power generation technology and PVT heat pump technology, absorbs solar radiation and sky cold radiation, and realizes day and night time-sharing thermoelectric cold supply. Background technique [0002] Solar energy is an inexhaustible new type of renewable energy. In the face of increasingly depleted fossil fuel resources and serious environmental pollution, solar and other renewable energy sources are effective substitutes for fossil fuels. Solar thermal utilization and photovoltaic utilization technologies are relatively mature and have been widely used in the fields of energy and power, refrigeration and air conditioning, social life, aerospace technology, etc. However, due to the low energy density, strong periodicity, and Poor stability and other shortcomings, there are also many problems in the use of solar energy. The low utilization rate of solar energy resources and ...

AI Technical Summary

Problems solved by technology

Solar thermal utilization and photoelectric utilization technologies are relatively mature, and have been widely used in energy power, refrigeration and air conditioning, social life, aerospace technology and other fields. However, due to the low energy density, strong periodicity, and There are also many problems in the utilization of solar energy. The low utilization rate of solar energy resources and the low utilization rate of solar system equipment are the current bottlenecks in the utilization of solar energy. The reason is not only related to the current development technology, but also related to the The singularity of solar energy use is related to

[0003] In order to overcome the singleness of the use of solar energy resources, previous research results have been explored in solar PVT combined heat and power technology. When the demand is high, the cooling output cannot be realized, and it cannot run around the clock, and the utilization rate of the equipment is low.

Another study shows that the direct expansion solar heat pump air conditioner and hot water system can realize the joint operation of day and night, output heat energy and air conditioner cooling capacity, but need auxiliary air-cooled heat exchanger and set valve switching, the system is more complex and difficult to control High, and the system does not have the function of power generation, and cannot output high-grade electric energy resources. The operation of the system requires a large amount of additional electric energy input, which makes the performance coefficient of the system not high and the energy utilization rate is low.

Moreover, the commonly used solar PVT modules are mainly tube-sheet type, and the inflatable modules are mostly double-sided inflatable type. Although the processing difficulty is low, the double-sided outer drum-shaped flow channel is not conducive to lamination with photovoltaic modules. Combined, it hinders the improvement of its overall heating and power generation performance

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