Multifunctional efficient utilization system based on solar intermediate temperature heat collection and photovoltaic and photothermal integrated device

Abstract

The invention discloses a multifunctional efficient utilization system based on a solar intermediate temperature heat collection and photovoltaic and photothermal integrated device. The system comprises a solar intermediate temperature heat collection device, a solar photovoltaic and photothermal integrated device, an absorption refrigerating device, a heat pump device, an air cooling device, a water storage device, a heat exchanger, an air conditioner terminal device, a hot water use device and a valve. Due to the combination of a solar utilization device, functions of power generating, refrigerating, heating, hot water supplying, steam supplying and the like are achieved, various kinds of energy generated in the system is fully utilized, efficiency of all devices in the system is ensured, and the comprehensive solar utilization efficiency is obviously improved.

Description

Technical field [0001] The invention relates to a solar energy multifunctional utilization system, in particular to a multifunctional efficient utilization system containing a solar energy medium-temperature heat collection, photovoltaic and light-heat integrated device, belonging to the technical field of solar energy utilization. Background technique [0002] As a clean, pollution-free renewable energy, solar energy is considered an important part of the world's energy strategy for its development and utilization. The utilization of low-temperature solar heat has been successfully commercialized, and how to use solar energy in more fields has become the content of research by scientists from all over the world. [0003] Solar photovoltaic devices can convert solar energy into electricity, but the utilization rate is low. Most of the energy becomes heat energy and is lost to the air. The use of solar photovoltaic and photothermal integrated devices can not only collect a large amo...

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Problems solved by technology

[0003] Solar photovoltaic devices can convert solar energy into electrical energy, but the utilization rate is low, and most of the energy becomes heat and is lost to the air. Using solar photovoltaic photothermal integrated devices can not only collect a large amount of solar heat, but also cool solar photovoltaic silicon wafers , improve the photoelectric conversion efficiency of solar energy, but due to the limitations of the photovoltaic device itself and the temperature requirements, the temperature of the hot water generated by the photovoltaic photothermal integrated device is very low, generally less than 50 ° C, and the heating starts slowly and the operation is unstable , it is difficult to produce valuable hot water on a large scale

[0004] In addition, with the development of solar energy medium and high temperature heat collection technology and the development of solar refrigeration technology, the current solar double effect absorption refrigeration system using solar energy medium temperature heat collection can effectively improve the efficiency of solar refrigeration compared with traditional solar refrigeration technology, but solar energy The heat of the cooling water of the absorption refrigeration device is not used due to the low temperature, and is lost to the air, and the energy collected from the solar energy is not used effectively except for the energy supplied to the refrigeration device.

[0005] Heat pump technology can use electric energy to transfer the energy of low-temperature heat sources to high-temperature heat sources. For heat pumps, the smaller the temperature difference between high-temperature heat sources and low-temperature heat sources, the higher the COP (heating efficiency). At present, the low-temperature heat sources of heat pumps are generally air or surface water. The temperature is not high and the efficiency is low, especially in winter, the operation effect and efficiency of the heat pump are greatly reduced

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