Solar energy photo-thermal photoelectric frequency division using system

A photothermal photoelectric and solar energy technology, which is applied in solar heating systems, solar thermal power generation, solar thermal energy and other directions, can solve the problems such as the limited allowable temperature of photovoltaic cells of photothermal units, and improve photothermal conversion efficiency and photoelectric efficiency. , to avoid the effect of temperature rise

Inactive Publication Date: 2015-05-20
TONGJI UNIV
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Problems solved by technology

In order to improve the total utilization rate of solar energy, solar cogeneration technology has been vigorously promoted and applied, but in the traditional solar cogeneration technology, the temperature of the photothermal unit is limited by the allowable temperature of the photovoltaic cell, and the heat energy obtained is the temperature lower waste heat

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  • Solar energy photo-thermal photoelectric frequency division using system
  • Solar energy photo-thermal photoelectric frequency division using system
  • Solar energy photo-thermal photoelectric frequency division using system

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0027] The present invention proposes a solar thermal photoelectric frequency division utilization system based on a reflective Fresnel concentrator, figure 1 A schematic diagram of the optical path of the system, figure 2 A schematic diagram of the waterway of the system. The system includes a direction control unit, a preheating unit, a photoelectric unit, a photothermal unit, a concentrating unit and a heat recovery unit. The photothermal unit absorbs the thermal energy of sunlight; the photoelectric unit performs photoelectric conversion of sunlight; the preheating unit recycles the heat generated by the photoelectric unit; the concentrating unit gathers sunlight; the heat recovery unit recycles the heat absorbed by the photothermal unit; The direction control unit connects the photoelectric unit, the photothermal unit and the light conc...

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Abstract

The invention provides a solar energy photo-thermal photoelectric frequency division using system and belongs to the technical field of solar energy thermoelectricity coupling. The system comprises a photo-thermal unit, a photoelectric unit, a preheating unit and a light condensation unit for focusing sunlight. The preheating unit, the photoelectric unit, the photo-thermal unit and the light condensation unit are arranged in sequence from top to bottom in the direction of sunlight. The preheating unit and the photo-thermal unit are provided with inner passages and are communicated through the inner passages. Frequency division fluid which flows from the preheating unit to the photo-thermal unit is contained in the inner passages. The photoelectric unit adheres to the lower portion of the preheating unit, so that heat exchanging with the frequency division fluid in the inner passages of the preheating unit is carried out. The light condensation unit is a reflecting type light condensation unit, sunlight which penetrates through the photo-thermal unit is gathered, and the gathered sunlight is reflected to the photoelectric unit. The solar energy photo-thermal photoelectric frequency division using system is low in cost, solar energy total converting efficiency is high, and high-grade thermal energy can be obtained.

Description

technical field [0001] The invention belongs to the technical field of combined solar heat and power, and relates to a solar energy utilization system, in particular to a solar energy frequency division utilization system. Background technique [0002] As a new energy source, solar energy is not only clean and pollution-free, but also inexhaustible. The energy radiated from the sun to the earth every minute is equivalent to that of 30 billion barrels of oil. Therefore, under the dual pressure of today's energy crisis and environmental pollution, solar energy plays an increasingly important role in the energy structure. [0003] At present, the utilization of solar energy includes photothermal conversion, photoelectric conversion, photochemical conversion, photobiological conversion, etc., and the most mature ones are photothermal conversion and photoelectric conversion. In order to improve the total utilization rate of solar energy, solar cogeneration technology has been vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/05F24J2/24F24J2/46H02S40/42H02S40/22F24S10/40F24S10/70
CPCY02E10/44Y02E10/52
Inventor 张洁安巍
Owner TONGJI UNIV
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