Solar conversion device

A technology of solar energy conversion and heat exchange tubes, applied in the field of photovoltaics, can solve the problems of low thermal conductivity, achieve high heat storage density, improve compressive strength, and high photovoltaic efficiency

Inactive Publication Date: 2016-12-21
常熟高新技术创业服务有限公司
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Problems solved by technology

[0006] Patent CN104848564A discloses a solar photovoltaic photothermal double high-efficiency heat exchange device, which discloses a heat collection medium, the heat collection medium is ethylene glycol aqueous solution, and ethylene glycol aqueous solution is a commonly used nanofluid medium, and its thermal conductivity is low

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown, a solar energy conversion device of the present invention includes a CPC integrated photovoltaic heat collection device 1, a support 2, a circulation pump 5 and a heat exchange tube 6, and the outlet end of the CPC integrated photovoltaic heat collection device 1 passes through a first valve 3 It is connected to the inlet end of the heat exchange tube 6, and the outlet end of the heat exchange tube 6 is connected to the inlet end of the CPC photovoltaic heat collection integrated device 1 through the circulation pump 5 through the second valve 4, and the CPC photovoltaic heat collection integrated device 1 is installed on the bracket 2, the inside of the heat exchange tube 6 contains a heat storage medium, and the heat storage medium is 30% to 50% of sodium nitrate, 10% to 20% of sodium chloride, and 10% to 20...

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Abstract

The invention discloses a solar photovoltaic-photothermal dual-high-efficiency heat exchange device which comprises a photovoltaic heat collecting device, a thermoelectric cooling sheet and a heat exchange tube; a heat collecting medium is arranged in the heat exchange tube; and the heat collecting medium consists of the following components in mass fraction: 30%-50% of sodium nitrate, 10%-20% of sodium chloride, 10%-20% of dodecanol, 1%-2% of carboxymethyl cellulose, 1%-3% of borax and the balance water. The solar photovoltaic-photothermal dual-high-efficiency heat exchange device has the technical advantages that: the heat collecting medium is a potential heat storage substance, and has the advantages of being high in heat storage density, stable in phase-transition temperature and the like; when the temperature of a battery is higher than the phase-transition temperature of the heat collecting medium, the heat collecting medium continuously stores heat energy, and does not generate phase transition; when the temperature of the battery is reduced, and is lower than the phase-transition temperature of the heat collecting medium, the heat collecting medium generates phase-transition, and the heat-collecting medium automatically releases heat, so that the temperature difference of the battery is reduced to form constant-temperature effect, and therefore, the temperature-matched heat collecting medium is obtained when high photovoltaic efficiency and high heat collecting efficiency are realized.

Description

technical field [0001] The invention belongs to the technical field of photovoltaics, and in particular relates to a solar energy conversion device. Background technique [0002] At present, general photovoltaic photothermal devices cannot achieve high photovoltaic efficiency and high heat collection efficiency at the same time. [0003] The heat collection medium with a higher temperature, the problem is that the heat collection efficiency will gradually decrease as the temperature of the heat collection medium continues to increase, because the higher the temperature of the heat collection medium, the higher the temperature of the solar heat collection device will be. The heat dissipation loss will increase. [0004] For the utilization of solar photovoltaics, many studies have shown that the electrical efficiency of polysilicon cells increases with the decrease of temperature, and the photoelectric conversion efficiency of photovoltaic cells can be increased by an averag...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/02H02J7/35F28D20/00F24J2/20F24S10/50
CPCF24S10/50F25B21/02F28D20/0034F28D2020/0065H02J7/35Y02E10/44Y02E10/56Y02E60/14Y02E70/30
Inventor 葛龙张宇滕诣迪张励
Owner 常熟高新技术创业服务有限公司
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