Combined heat and power system

Abstract

The embodiment of the invention discloses a combined heat and power system which comprises a solar battery, a heat storage water tank and a heat pipe arranged on the back of the solar battery, wherein the heat pipe is internally provided with a heat transfer working medium, and comprises an evaporation end contacted with the back of the solar battery, a condensation end conducting heat exchange with fluid in the heat storage water tank, and transfer pipelines connecting the evaporation end to the condensation end. According to the combined heat and power system, the heat pipe is additionally arranged on the back of the solar battery as a heat transfer unit and internally provided with the liquid heat transfer working medium; the vaporization temperature of the heat transfer working medium is lower than the temperature of the surface of the solar battery in the power generation process; and the liquefaction temperature of the heat transfer working medium is higher than the temperature of the fluid. When the solar battery is used for power generation, the heat transfer working medium conducts the heat exchange with the surface of the solar battery and the fluid, and the direct contact between the fluid and the solar battery is avoided, so that the problem that high-grade heat energy cannot be supplied while the power generation efficiency is ensured is solved.

Description

technical field [0001] The invention relates to the field of solar photovoltaic power generation, and more specifically relates to a cogeneration system of heat and power. Background technique [0002] The rapid growth of China's energy demand has broken China's long-term self-sufficient energy supply pattern, which will make China's future energy supply more and more dependent on the international market. Therefore, vigorously developing new energy and renewable energy has become China's 21 It is the main task and strategic goal of developing the national economy and building a well-off society in the 21st century. Among them, the most representative is the utilization of solar energy. The utilization of solar heating and solar photovoltaic power generation occupies an important position in China's sustainable energy development and is an important part of solving China's energy crisis. [0003] In the process of using solar cells to generate electricity, in order to impro...

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Problems solved by technology

[0005] In view of this, the present invention provides a high-efficiency solar combined heat and power system, which solves the problem in the prior art that the quality of thermal energy obtained by the solar combined heat and power system while providing electric energy is not high enough

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