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Inorganic phase change heat storage device capable of reducing phase separation

A technology of inorganic phase change and heat storage devices, which is applied in the direction of heat storage equipment, heat exchanger types, indirect heat exchangers, etc., and can solve the problems that cannot be applied and popularized, and the service life of inorganic phase change heat storage materials is short.

Inactive Publication Date: 2014-07-09
杨春花
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  • Abstract
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Problems solved by technology

Phase separation is the main reason why inorganic phase change heat storage materials have a short service life and cannot be applied and promoted

Method used

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  • Inorganic phase change heat storage device capable of reducing phase separation

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Embodiment Construction

[0008] An inorganic phase-change thermal storage device that reduces phase separation. The container (1) has a diameter of 0.65 meters and a height of 1.5 meters. The inorganic phase-change thermal storage material (11) is sodium silicate nonahydrate, filling two-thirds of the cavity of the container ; The heat exchange tube (2) is a copper tube, and the heat exchange medium is water.

[0009] First start the heat storage process, 80 ° C hot water enters the heat exchange tube from the heat exchange tube port (21), and then flows out from the other port (21) for reheating, so that the heat storage material (11) in the container is heated by circulation, The flow rate of hot water is 0.25m / s. The density of the heat exchange tube near the blade of the agitator is high, and the solid-phase heat storage material (11) around it starts to melt first, and the agitator starts to stir as the melting proceeds, and the speed is slowly increased to 100r / min. After one hour, all the heat...

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Abstract

The invention provides an inorganic phase change heat storage device capable of reducing phase separation. The inorganic phase change heat storage device comprises a container (1), an inorganic phase change heat storage material (11), heat exchange tubes (2) and a stirrer (3); the inorganic phase change heat storage device is so structured that the heat exchange tubes (2) and the stirrer (3) are mounted in the container (1), the stirrer (3) is arranged between the heat exchange tubes (2), and the rest space part of the container (1) is filled with the inorganic phase change heat storage material (11). The phase separation generated by the inorganic phase change heat storage material (11) in the repeated heat storage and release process by virtue of stirring of the stirrer (3), and the service life of the heat storage device is prolonged; meanwhile, heat exchange can be strengthened and the heat release speed can be increased.

Description

Technical field: [0001] The invention relates to a thermal storage device, in particular to a thermal storage device using inorganic compounds as phase-change thermal storage materials. Background technique: [0002] Inorganic phase change heat storage materials have the characteristics of high heat storage density and constant heat release temperature, so they have broad application prospects in the fields of industrial waste heat, waste heat recovery, air conditioning energy saving, and power peak regulation. However, there are problems such as supercooling and phase separation during the use of inorganic phase change thermal storage materials, which limit its application and promotion. Phase separation means that during the heating-cooling cycle of inorganic heat storage materials, some crystalline solids are not dissolved during the heating and melting process and settle to the bottom of the container to separate from the liquid phase, resulting in the loss of heat stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/02
CPCY02E60/14
Inventor 杨春花
Owner 杨春花
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