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Nano-fluid based solar electricity and heat combined utilization device

A nano-fluid, solar energy technology, applied in the field of photovoltaics, can solve the problems of temperature rise of solar panels, reduction of photoelectric conversion efficiency, etc., and achieve the effect of solving the problem of temperature rise, improving photoelectric conversion efficiency, and improving comprehensive utilization efficiency.

Inactive Publication Date: 2017-05-10
HOHAI UNIV CHANGZHOU
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Problems solved by technology

How to solve the problem of the reduction of photoelectric conversion efficiency caused by the temperature rise of solar panels is the key to improving the efficiency of solar cells

Method used

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  • Nano-fluid based solar electricity and heat combined utilization device
  • Nano-fluid based solar electricity and heat combined utilization device

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Embodiment Construction

[0014] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0015] Such as Figure 1-2 As shown, a nanofluid-based solar power-heating device includes a PV / T (photovoltaic-thermal integration) heat collector plate 1, a heat exchange tank 2, a first nanofluid tank 3, a second nanofluid tank 4, The first peristaltic pump 5, the second peristaltic pump 6, the first flow meter 7, the second flow mete...

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Abstract

The invention discloses a nano-fluid based solar electricity and heat combined utilization device. A PV / T heat collecting plate, a heat exchange water tank, a first nano-fluid box, a first peristaltic pump, a first flow-meter and a first thermocouple are connected in sequence through a first pipeline to form a circle; and the PV / T heat collecting plate, the heat exchange water tank, a second nano-fluid box, a second peristaltic pump, a second thermocouple and a second flow-meter are connected in sequence through a second pipeline to form a circle. As the solar photoelectricity utilization and photo-thermal utilization are combined organically, the nano-fluid based solar electricity and heat combined utilization device not only solves the temperature rise problem of a solar cell panel, but also can utilize the afterheat generated by the solar radiation and accordingly increases the comprehensive utilization efficiency of the solar energy. In addition, as the nano-fluid has a selective absorption characteristic for the solar radiation, almost all the near infrared and infrared radiation can be absorbed, and the photoelectric conversion efficiency of a solar cell is further increased.

Description

technical field [0001] The invention relates to a nanofluid-based combined solar electric heating device, which belongs to the field of photovoltaic technology. Background technique [0002] Solar cells generate electrical energy through the movement of electrons in semiconductors stimulated by sunlight. After light enters the cell, photons with energy greater than the "band gap" width (photons with a wavelength smaller than the cut-off wavelength) are absorbed by the solar cell to generate electrons-holes Yes, but there is still a part of light transmitted to the semiconductor lattice in the form of heat in a short period of time; photons with energy less than the width of the "forbidden band" cannot generate hole pairs, but are lost in the form of heat in the solar cell. For silicon solar cells, this loss accounts for 53% of the total energy of incident sunlight. The photoelectric conversion efficiency of general silicon cells can reach more than 50% under the light condit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/42H02S40/44
CPCH02S40/425H02S40/44Y02E10/50Y02E10/60
Inventor 李华锋张超王喜炜王光清陈建豪黄子强彭俊罗朋白建波
Owner HOHAI UNIV CHANGZHOU
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