Photovoltaic, heat storage and photo-thermal combined solar power generation system and method

Abstract

The invention discloses a photovoltaic, heat storage and photo-thermal combined solar power generation system and method. The system comprises a solar photovoltaic panel, wherein a liquid cooler of the solar photovoltaic panel is connected with a solar heat collector, the solar heat collector is connected with a valve b, the valve b is connected with an energy storage system, the energy storage system is connected with a valve c, the valve c is connected with a liquid storage device, an outlet of the liquid storage device is divided into two paths, one path is connected with an inlet of the valve a, an outlet of the valve a is connected with an inlet of the liquid cooler of the solar photovoltaic panel, the other path is connected with an inlet of a valve d, an outlet of the valve d is connected with the energy storage system, the energy storage system is connected with an inlet of a valve e, an outlet of the valve e is connected with an inlet of a free piston linear generator, an outlet of the free piston linear generator is connected with an inlet of a condenser, and an outlet of the condenser is connected with an inlet of the liquid storage device after meeting with an outlet ofthe valve c. According to the system, the efficiency of the solar photovoltaic panel is improved, and continuous power generation can be realized.

Description

technical field [0001] The invention relates to the technical field of power generation systems, in particular to a photovoltaic, heat storage, photothermal combined solar power generation system and method. Background technique [0002] Solar energy is an inexhaustible clean energy. At the current stage, solar photovoltaic technology is relatively mature, and its application is relatively photovoltaic, but its energy storage is difficult to solve. In addition, although the theoretical efficiency of photovoltaic power generation is high, the efficiency of solar photovoltaic panels decreases linearly with the increase of temperature, so solar photovoltaic panels must be cooled. At the same time, due to the high theoretical thermal efficiency of solar thermal power generation when collecting heat at high temperatures, and theoretically, relatively cheap thermal energy storage can be used to solve the problem of uneven solar time distribution, solar thermal power generation has...

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Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a photovoltaic, heat storage, and photothermal combined solar power generation system and method. The working fluid of photothermal power generation is used to cool the solar photovoltaic panel at low temperature, and the The working medium is preheated and the collected heat is stored. When solar photovoltaic power generation is insufficient, photothermal power generation is used to supplement it. This not only improves the efficiency of solar photovoltaic panels, but also solves the problem of solar photovoltaic power generation and energy storage difficulties. problem, continuous power generation can be achieved

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