Solar photothermal and photoelectric frequency division utilization system

A technology of photothermal photoelectricity and solar energy, applied in solar heating systems, solar thermal power generation, solar thermal energy, etc., can solve the problems of low grade and limited allowable battery temperature, etc., to reduce area, improve photothermal conversion efficiency, and improve Effect of Photoelectric Efficiency

Inactive Publication Date: 2014-10-15
TONGJI UNIV
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  • Solar photothermal and photoelectric frequency division utilization system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0025] The present invention proposes a solar thermal photoelectric frequency division utilization system, figure 1 A schematic diagram of the system structure. The system includes concentrating plate 11, quartz sleeve 10, photovoltaic cell 9, aluminum tube 8, insulation layer 6, Cu 2-x S semiconductor nanofluid 5, heat exchanger 2, cooling water 1, flow regulating valve 3, circulation pump 4 and solar tracker, etc. Among them, Cu 2-x S semiconductor nanofluid 5 is a non-stoichiometric semiconductor nanofluid, where x is greater than 0 and less than 2.

[0026] The solar tracker detects the direction of sunlight, and uses the detection results to assist in adjusting the direction of the concentrator 11, ensuring that the surface of the concentrator 11 is always perpendicular to the sunlight, so as to receive as much radiant energy as possibl...

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Abstract

The invention provides a solar photothermal and photoelectric frequency division utilization system, which comprises a condensing unit, a photothermal unit, a photoelectric unit and a heat recovery unit, wherein the condensing unit, the photothermal unit and the photoelectric unit are arranged from top to bottom in turn; the photothermal unit and the photoelectric unit are internally provided with a channel respectively, and are communicated by the channels; semiconductor nano fluid is contained in the channels; the flowing direction of the semiconductor nano fluid is from the photoelectric unit to the photothermal unit to cool the photoelectric unit, and photothermal and photoelectric frequency division is performed on sunlight passing through in the photothermal unit; the photothermal unit and the photoelectric unit are connected with the heat recovery unit through the respective internal channels to form a loop. By applying the solar photothermal and photoelectric frequency division utilization system, the working temperature of photovoltaic cells can be effectively reduced, the photothermal conversion efficiency of sunlight, photoelectric conversion efficiency and energy grade are improved, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of combined use of solar heat and electricity, and relates to a frequency division utilization system of solar light, heat, and photoelectricity. Background technique [0002] Today's energy shortage and environmental pollution have become major problems that plague countries all over the world, and solar energy, as a new type of renewable and clean energy, has received more and more attention. According to calculations, the energy radiated by the sun to the earth is as high as 4×10 15 MW, 2000 times the energy consumption of the earth. Therefore, the development of solar energy resources has great practical significance to solve the world's energy and environmental problems. [0003] At present, the utilization of solar energy mainly focuses on photothermal, photoelectric, photochemical, and photobiological conversions. In solar radiation, only a part of the light energy can be absorbed by the photovolta...

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Application Information

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IPC IPC(8): F24J2/08F24J2/38H02S40/42H02S40/44F24S23/30F24S50/20
CPCY02E10/47Y02E10/60Y02E10/50
Inventor 安巍张洁
Owner TONGJI UNIV
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