Solid heat storage device

A heat storage device and solid technology, applied in heating devices, solar thermal devices, solar heat storage, etc., can solve problems such as short service life, large heat loss in external pipeline insulation cycles, and limited heat transfer area between solids. Reach the effect of reducing the energy consumption of the system operation, ensuring the quality of heat output, and good overall heat transfer performance

CN102818468AInactive Publication Date: 2012-12-12BEIJING TERASOLAR PHOTOTHERMAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-12-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a solid heat storage device which is formed by combining at least one heat storage unit in series and / or parallel. The heat storage unit comprises a casing, a solid heat storage medium arranged in the casing and a heat insulation layer arranged outside the casing. The outer surface of the solid heat storage medium is a heat exchange interface. Heat insulation layers are regularly arranged in the heat storage unit, an inclined temperature layer is arranged in the axial direction, and a layering control system is arranged in the heat storage unit to ensure high grade storage and output of heat. The heat storage unit of an array can be vertically arranged and can also be horizontally arranged with a certain inclined angle. The solid heat storage medium utilizes solid sensible heat to store heat, and is safe in running, simple to process and low in cost. The surface of the solid heat storage medium has good heat exchange efficiency and good heat storage performance and can be widely applied to various heat storage applications, especially a solar photo-thermal utilization system.
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Description

technical field

[0001] The invention relates to a solid heat storage device, in particular to a heat storage device in a solar photothermal utilization system. Background technique

[0002] Solar energy is an ideal clean energy source, but there is a problem of timeliness in utilization. The energy received during the sunshine period is more than required, but it cannot function after sunset. Therefore, how to store the excess energy during sunshine for the continuous operation of the system after sunset, that is, to take the excess to make up for the deficiency, has become a key issue in realizing the continuous operation of the solar thermal utilization device.

[0003] In the existing solar energy storage technologies, various heat storage media have been reported or used. In recent years, it has been reported that a composite phase-change material (shape-fixed phase-change material) supported by a specific material as a matrix has been obtained in the laboratory to stor...

Examples

Embodiment Construction

[0053] The present invention will be further described in detail below in conjunction with the examples.

[0054] figure 1 It is a schematic diagram of the overall structure of an embodiment of a solid heat storage device of the present invention; the solid heat storage device is composed of a plurality of heat storage units, such as an array of heat storage units 1-1 and heat storage units 1-3; figure 1 As shown, the heat storage units 1-1 of the array are arranged vertically on the ground; each heat storage unit 1-1 includes a casing 2, a solid heat storage medium 3 arranged inside the casing 2, and an insulation layer 10 arranged outside the casing 2; The outer surface of the solid heat storage medium 3 is the heat exchange interface of the heat transfer medium, and the solid heat storage medium 3 is a dense material with a porosity of less than 10%; optimally, the surface of the solid heat storage medium 3 has an airtight layer to further reduce the heat transfer medium i...