Solar phase-change energy storage thermoelectric power generation device and lighting system

A technology of phase change energy storage and temperature difference power generation, which is applied in the field of solar power generation, can solve the problems of maximum power reduction and efficiency reduction, and achieve the effects of improving conversion efficiency, improving power generation efficiency, and excellent direct heat absorption and heat conduction

Inactive Publication Date: 2014-09-03
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a solar phase change energy storage type thermoelectric power generation device and lighting system to solve the problems of the existing solar photovoltaic cells with reduced maximum power and reduced efficiency due to temperature rise

Method used

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  • Solar phase-change energy storage thermoelectric power generation device and lighting system
  • Solar phase-change energy storage thermoelectric power generation device and lighting system
  • Solar phase-change energy storage thermoelectric power generation device and lighting system

Examples

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Embodiment 1

[0030] A solar phase change energy storage type thermoelectric power generation device and lighting system provided by the present invention, the working structure block diagram of the system is as follows figure 1 As shown, including solar phase change energy storage thermoelectric power generation panels (see figure 2 , image 3 ), solar lighting controllers, batteries and lights.

[0031] The solar phase change energy storage type thermoelectric power generation panel includes a heat-absorbing concave groove substrate 3 (see Figure 4 ), thermoelectric power generation module 5 and cooling fins 8. The heat-absorbing concave groove substrate 3 is made of copper material, and the phase change material (PCM) filled in the groove of the heat-absorbing concave groove substrate 3 is a solid-solid phase change material-thermal powder combination 4, and the solid-solid phase change material is ammonia Combination of methylpropanediol [AMPD]-(D)2-camphorone [DC]; heat conduction...

Embodiment 2

[0037] This embodiment applies the solar phase change energy storage type thermoelectric power generation device and lighting system provided in Example 1, the difference is that the heat-absorbing concave groove substrate 3 is made of ceramic materials; in the groove of the heat-absorbing concave groove ceramic substrate Filling phase change material (PCM) as nano nano TiO 2 Microcapsule-coated inorganic phase-change material mixture Mg(NO 3 ) 3 ·6H 2 O / Al(NO 3 ) 3 9H 2 O; the heat conduction plate 2 is made of ceramic plate material; the heat insulating material 9 is made of expanded perlite; the storage battery is a lithium-ion (Liion) battery; the lighting lamp is a DC energy-saving lamp. The working process of embodiment 2 is identical with embodiment 1.

Embodiment 3

[0039] This embodiment applies a solar phase change energy storage type thermoelectric power generation device and lighting system provided in Example 1. The difference is that the heat-absorbing concave groove substrate 3 is made of copper alloy material; the heat-absorbing concave groove copper alloy substrate 3 The phase change material (PCM) filled in the groove is a composite of expanded graphite and barium hydroxide octahydrate; the heat conduction plate 2 is made of graphite plate material; the insulating material 9 is made of slag wool; the battery is made of nickel-cadmium (NiCd) battery; The lamp adopts low-pressure sodium lamp. The working process of this example 3 is the same as that of example 1.

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Abstract

The invention relates to a solar phase-change energy storage thermoelectric power generation device and a lighting system. The power generation device comprises a thermoelectric power generation plate, and the thermoelectric power generation plate comprises a heat absorption groove-type groove substrate, a thermoelectric power generation module and cooling fins. Grooves of the heat absorption type groove-type substrate are filled with phase-change energy storage material. A heat conduction plate is encapsulated through heat conduction glue, and the outer layer of the heat conduction plate is coated with heat absorption material. The hot end of the thermoelectric power generation module tightly makes contact with the high-temperature end of the heat absorption groove-type substrate, and the cold end of the thermoelectric power generation module is connected with the cooling fins through the heat conduction plate and the heat conduction glue. The lighting system comprises the power generation device, a solar lighting controller, a storage battery and a lighting lamp. Due to the unique structure of the heat absorption groove-type substrate, the heat absorption groove-type substrate has excellent heat absorption and heat conduction effects on solar radiation, the heat absorption groove-type substrate can be combined with the phase-change energy storage material to improve temperature stability of the hot end of the thermoelectric power generation module of the system, and thermoelectric power generation efficiency is improved.

Description

technical field [0001] The invention relates to the field of solar power generation, more specifically, to a solar phase change energy storage type thermoelectric power generation device and an illumination system. Background technique [0002] Solar energy is the energy produced by the continuous nuclear fusion reaction process inside the sun. The 24h annual average radiation intensity at a certain point on the earth's surface is 0.2Kw / m 2 , which is equivalent to 102000TW of energy; the combination of solar energy and LED lighting has certain development prospects. Although the total amount of solar energy resources is equivalent to more than 10,000 times the energy used by human beings today, the energy density of solar energy is low, and it varies from place to place and from time to time, which is the main problem facing the development and utilization of solar energy. These characteristics of solar energy make its role in lighting systems also subject to certain rest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N11/00
Inventor 袁曦明
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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