Solar photovoltaic photo-thermal coupling drying box

A solar photovoltaic, photothermal coupling technology, applied in the direction of solar heat storage, solar thermal energy, solar thermal power generation, etc., can solve the problems of obvious intermittent and uninterrupted utilization

Pending Publication Date: 2022-04-26
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an inexhaustible and inexhaustible renewable energy source, solar energy has the biggest drawback that it is intermittent and cannot be used continuously.

Method used

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  • Solar photovoltaic photo-thermal coupling drying box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: as Figure 1-Figure 4 As shown, a solar photovoltaic photothermal coupling drying box includes a heat storage layer 1 and a drying layer 2. The heat storage layer 1 is an inverted V-shaped structure and is arranged above the drying layer 2. The Neel lens 3 is provided with a composite medium layer 4 of paraffin, lauric acid and expanded graphite inside, and the heat storage layer 1 and the drying layer 2 are connected through a plurality of ventilation copper pipes 5, and the upper end of the ventilation copper pipe 5 is placed on the composite medium layer 4 (paraffin wax (80%) + lauric acid (10%) + expanded graphite (10%)), the top of the heat storage layer 1 and the bottom of the drying layer 2 are respectively provided with five induction fans 7 and five exhaust fans 6, the induction fans 7 and the exhaust fan 6 are connected to the battery, and the battery is connected to the photovoltaic panel through the charging module. dry.

[0018] The paraffin...

Embodiment 2

[0023] Example 2: The preparation method of the composite medium layer 4 is as follows: when preparing the composite medium layer, the paraffin wax as the main heat storage material is heated in the container, and 10% expanded graphite is added when the paraffin wax is completely melted. As a good heat-conducting material, the addition of graphite will greatly improve the heat-conducting efficiency of paraffin, so that heat can be stored in paraffin more efficiently. And because the 80-mesh expanded graphite is selected for use, the solubility of graphite in paraffin wax is further enhanced, making it difficult to precipitate in paraffin wax solution. In order to mix the two evenly and avoid uneven heat conduction, sufficient stirring is required during the mixing process. After the two are mixed evenly, cool and maintain the temperature of the heat storage medium to 65 degrees. At this time, add 10% lauric acid. The choice of 65 degrees is because when the temperature is lowe...

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Abstract

The invention discloses a solar photovoltaic photo-thermal coupling drying box which comprises a heat storage layer and a drying layer, the heat storage layer is of an inverted-V-shaped structure and is arranged above the drying layer, Fresnel lenses are arranged on the two slopes of the top of the heat storage layer, and a composite medium layer internally provided with paraffin, lauric acid and expanded graphite is arranged on the two slopes of the top of the heat storage layer. The heat storage layer and the drying layer are communicated through a plurality of ventilation copper pipes, the upper ends of the ventilation copper pipes are arranged in the composite dielectric layer, the top of the heat storage layer and the bottom of the drying layer are provided with an induced draft fan and an exhaust fan respectively, the induced draft fan and the exhaust fan are connected with a storage battery, the storage battery is connected to a photovoltaic panel through a charging module, and the photovoltaic panel is installed above the heat storage layer. The composite medium layer of the composite phase change material prepared by mixing graphite, lauric acid and paraffin is arranged in the heat storage layer, the expanded graphite improves the thermal conductivity of the paraffin, the lauric acid reduces the phase change temperature of the paraffin, the Fresnel lens improves the heating condition of the heat storage medium, the heat exchange efficiency of equipment is high, and the drying effect is better.

Description

technical field [0001] The invention belongs to the technical field of drying equipment and relates to a drying box coupled with solar photovoltaic light and heat. Background technique [0002] Our country has a vast land area and rich products, and the output of various grains, fruits and meat is huge. Affected by geographical conditions, southern my country is rich in various tropical and subtropical fruit resources and medicinal materials, such as bananas, jackfruit, mango, Gastrodia elata, ganoderma lucidum, and Eucommia ulmoides. In the face of resources with such a huge output, if they cannot be dried and stored in time, the economic losses will be inestimable. As an ancient method of storage, the solar drying method has been followed for thousands of years in our country, and with the development of science and technology, it is gradually replaced by hot air drying, vacuum freeze drying and other technologies. But these drying methods are all realized at the cost of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/28F26B9/06F26B21/00F24S20/30F24S23/30F24S60/10H02J7/35C09K5/06
CPCF26B3/286F26B9/06F26B21/004F24S20/30F24S23/31F24S60/10H02J7/35C09K5/063Y02E10/40Y02P70/10
Inventor 李阳虞育杰
Owner GUIZHOU UNIV
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