Novel heat pipe type light gathering photovoltaic optothermal temperature difference electricity generation integral system

Abstract

The invention provides a novel heat pipe type light gathering photovoltaic optothermal temperature difference electricity generation integral system, which is applied to combined heat and power support in sunny weather, and belongs to the technical field of solar energy utilization. The system comprises a light gathering photovoltaic system, a heat pipe, a temperature difference power generating assembly and a water cooling system. Through the heat pipe, the rest heat generated by the light gathering photovoltaic system is transferred to the hot end of a temperature difference electricity generation assembly; the cold end of the temperature difference electricity generation assembly is connected with the water cooling system, so that the photovoltaic and temperature difference electricitygeneration is combined for generating electricity. The electricity generated by the light gathering photovoltaic assembly and the temperature difference electricity generation assembly is merged to auser for use through an MPPT inverter; cooling water absorbs excessive heat of a temperature difference electricity generation sheet; after the temperature rise, the heat is stored to a hot water boxto be used as water for life. Compared with a conventional light gathering photovoltaic system, the system has the advantages that the heat pipe lowers the temperature for the photovoltaic battery, sothat the temperature distribution is uniform; meanwhile, the rest heat of the photovoltaic system is used for generating the electric energy with the wider application range; the integral utilizationefficiency of the solar energy is improved.

Description

technical field [0001] The invention relates to a combination of a heat pipe type CPC compound parabolic concentrating photovoltaic system and thermoelectric power generation to increase electric energy output and generate hot water for domestic water, belonging to the field of total solar energy utilization. Background technique [0002] As a clean energy source, solar energy has been paid more and more attention. The main forms of solar energy utilization combined with buildings are solar power generation and solar heat generation. The most common way of solar power generation is to use photovoltaic cells to receive sunlight to generate electricity directly; The heater receives sunlight to generate thermal energy to meet users' hot water or heating needs. When photovoltaic cells receive sunlight for power generation, they can only effectively convert the light energy in sunlight that is close to the energy gap of the battery semiconductor, and the conversion efficiency is ...

AI Technical Summary

Problems solved by technology

When photovoltaic cells receive sunlight for power generation, they can only effectively convert the light energy in sunlight that is close to the energy gap of the battery semiconductor, and the conversion efficiency is usually limited to less than 30% due to material limitations.

The excess energy not utilized by photovoltaic cells will lead to an increase in the temperature of the panel, and an increase in the temperature of the panel will result in a decrease in conversion efficiency. The electrical efficiency will decrease by about 0.5% for every 1°C increase in temperature.

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