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Hybrid heat storage device and heating method

A technology of a heat storage device and a heating method, which is applied in the directions of heat storage equipment, lighting and heating equipment, heat exchange equipment, etc., can solve the problem of uneven heat absorption and release, and excessive temperature difference between the two ends of the heat storage body. The utilization rate of heat storage materials and other problems, to achieve the effect of absorbing and releasing heat uniformly, improving material utilization rate, and high safety and stability

Pending Publication Date: 2020-11-17
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of uneven heat absorption and release by the electrothermal energy storage structure in the prior art, which lead to excessive temperature difference between the two ends of the heat storage body and the utilization rate of the heat storage material, thereby providing a hybrid type Heat storage device and heating method

Method used

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  • Hybrid heat storage device and heating method
  • Hybrid heat storage device and heating method

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Embodiment 1

[0029] An embodiment of the present invention provides a hybrid thermal storage device, including: a heating element, a thermal storage main structure, such as figure 1 As shown, the heat storage main body structure is divided into three sections according to the preset length ratio. The first section 1 and the third section 3 located at both ends are composed of the first heat storage bricks, and the second section 2 in the middle is composed of the second heat storage bricks. Composed of heat bricks, the first heat storage brick and the second heat storage brick are both solid sensible heat storage materials, and each has at least one first channel 11 and at least one second channel 12 that run through the brick body, wherein The first passage 11 is along the direction of air circulation, and the second passage 12 is along the direction perpendicular to the air circulation. The first passages of the first heat storage brick and the second heat storage brick are both used to p...

Embodiment 2

[0037] An embodiment of the present invention provides a heating method for a hybrid heat storage device, based on the hybrid heat storage device in Example 1, such as Figure 5 shown, including:

[0038]Step S1: Place a heating element in the first channel of all the heat storage bricks in the heat storage main structure to heat the heat storage device;

[0039] Step S2: placing a heating element in the second channel of the first section of the heat storage main structure to assist in heating the heat storage device;

[0040] Step S3: placing a third heat storage brick in the second channel of the second section and the third section of the main heat storage structure for heat storage;

[0041] Step S4: Place a temperature measuring element in the installation hole of the first section of the heat storage main structure for monitoring the temperature at the air inlet end.

[0042] It should be noted that the order of the above steps is only a specific embodiment, and the o...

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Abstract

The invention discloses a hybrid heat storage device and a heating method. The heat storage main body structure of the hybrid heat storage device is formed by coupling a first heat storage brick, a second heat storage brick and a third heat storage brick; the first heat storage brick and the second heat storage brick are made of solid sensible heat storage material; the third heat storage brick ismade of solid phase change heat storage material; and the shape of the third heat storage brick is matched with a placed channel. The hybrid heat storage device can increase the energy storage density of a heat accumulator and improves the heat storage capacity of a heat storage device; and the solid phase change heat storage material is not stressed and does not make direct contact with an electric heating element, so that the problems of corrosion, insulation and the like are avoided, and the safety and stability are high. According to the heating method, heating elements are placed in a first channel and a second channel close to an air inlet end, the heating states of the heating elements are independently controlled, so that the heat storage brick bodies absorb and release heat evenly, meanwhile, the temperature difference between the air inlet end and the air outlet end of the heat storage body after the heat storage device stably operates can be made up, and the material utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of heat storage, in particular to a hybrid heat storage device and a heating method. Background technique [0002] At present, electrothermal energy storage technology is in a period of vigorous development. The heat storage and heat transfer power of different structural types of electrothermal energy storage devices depends on the structure of electrothermal energy storage bricks, electric heating methods, and air volume control. The existing electrothermal energy storage brick body absorbs and releases heat unevenly, and the common heating method causes the temperature difference between the two ends of the heat storage body to be too large, resulting in low utilization rate of the heat storage material. Uneven heat release and absorption lead to high temperature around the electric heating element, and the stress of the electric heating material along the direction of air flow is large, which may easily ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/00F28F27/00
CPCF28D20/0056F28F27/00Y02E60/14
Inventor 邓占锋徐桂芝陈梦东刘文亮
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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