Solar thermal power generation device based on double pulsating heat pipes

Abstract

The invention provides a solar thermal power generation device based on double pulsating heat pipes. The device comprises a solar heat collector (1), a phase change thermal storage cavity (2), a high-temperature section pulsating heat pipe (3), a low-temperature section pulsating heat pipe (4) and a thermal power generation piece (5). The phase change thermal storage cavity (2) is filled with a phase change thermal storage material. An evaporation end of the high-temperature section pulsating heat pipe (3) extends into the phase change thermal storage material, and a condensation end of the high-temperature section pulsating heat pipe (3) is embedded in a channel of a high-temperature heat-conducting plate. An evaporation end of the low-temperature section pulsating heat pipe (4) extends into a channel of a low-temperature heat-conducting plate, and a condensation end of the low-temperature section pulsating heat pipe (4) is placed in an external environment. The thermal power generation piece (5) is placed between the low-temperature heat-conducting plate and the high-temperature heat-conducting plate. The double pulsating heat pipes are used, a high-temperature difference betweentwo sides of the thermal power generation piece all the time can be ensured, the thermal response is fast, the heat transfer efficiency is high, the phase change thermal storage material is used to store the heat energy absorbed by the solar heat collector, and problems of uneven temperature distribution and a small contact area in heat export are avoided while heat is stored.

Description

technical field [0001] The invention relates to a solar thermoelectric power generation device based on double pulsation heat pipes, belonging to the field of solar power generation devices. Background technique [0002] Solar thermal power generation has the advantages of low cost, simple structure, high safety, energy saving and emission reduction. Compared with photovoltaic power generation, it has the characteristics of less restrictions on the working environment and long working hours, so it has broad application prospects. [0003] The problem existing in the existing solar thermoelectric power generation technology is: the collection and transfer of heat energy from the solar collector plate and the transfer of heat energy to the thermoelectric power generation sheet need to rely on the liquid heat transfer fluid driven by the pump, and the excessive flow of the system reduces the reliability of the system operation. Safety and safety, and the transfer of heat energy...

AI Technical Summary

Problems solved by technology

[0003] The problem existing in the existing solar thermoelectric power generation technology is: the collection and transfer of heat energy from the solar collector plate and the transfer of heat energy to the thermoelectric power generation sheet need to rely on the liquid heat transfer fluid driven by the pump, and the excessive flow of the system reduces the reliability of the system operation. Safety and safety, and the heat transfer through the fluid has the defect of low heat transfer efficiency

Due to the low heat transfer efficiency, the input and output of heat energy on both sides of the thermoelectric generation sheet are correspondingly slow, which makes it difficult to maintain the temperature difference on both sides of the thermoelectric generation sheet, and the thermoelectric conversion efficiency is low

In addition, the pumps driving the flow of heat transfer fluids require additional electrical energy, which is contrary to the significance of solar thermoelectric power generation

Moreover, the appearance of pumps and other devices increases the complexity of the system, resulting in cumbersome maintenance and overhaul, and increased system costs.

Images