Mixed filling type heat/cold storage device
A technology of mixed filling and heat storage, applied in the direction of heat storage equipment, heat exchanger type, indirect heat exchanger, etc., to achieve the effect of overcoming large gaps, reducing filling porosity, and reducing volume
Active Publication Date: 2021-09-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology
[0004] The invention provides a hybrid filled heat storage / cooler, which can effectively reduce the filling porosity of the energy storage medium, overcome the problem of large pores near the wall, effectively suppress the wall effect, and improve the energy storage characteristics
Method used
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[0039] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0040] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this The embodiments and simplified descriptions of the invention do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed a...
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The invention provides a mixed filling type heat / cold storage device. The mixed filling type heat / cold storage device comprises a shell, the shell is filled with energy storage media, and the energy storage media comprise a first energy storage medium, a second energy storage medium and a third energy storage medium which are sequentially arranged from inside to outside in the radial direction of the shell. The particle diameter of the first energy storage medium is larger than that of the second energy storage medium, and the particle diameter of the second energy storage medium is larger than that of the third energy storage medium. According to the mixed filling type heat / cold storage device, filling porosity is effectively reduced, the heat exchange effect between heat exchange fluid and the energy storage medium is enhanced, the size of the heat / cold storage device can be effectively reduced under the condition that the theoretical energy storage amount is fixed, meanwhile, the problem that a gap in the near wall position is large is effectively solved. The adverse effect of a wall surface effect on a flow field in the heat / cold storage device is restrained, and the energy storage characteristic of the heat / cold storage device is improved.
Description
technical field [0001] The invention relates to the technical field of energy storage equipment, in particular to a hybrid filling type heat storage / cooler. Background technique [0002] As the core component of heat storage and cold storage technology, the heat storage / cooler adopts a packed bed structure for heat storage or cold storage. It has the advantages of environmental protection, safety, stability, and low cost, and is easy to realize large-scale application. [0003] During the energy storage and energy release process of the heat storage / cooler with the existing packed bed structure, the heat exchange fluid enters the packed bed along the axial direction and exchanges heat with the energy storage medium in the packed bed to realize energy storage and release. In a large-scale energy storage system, the volume required for the packed bed is large, so the porosity of the energy storage medium has a greater impact on the heat storage / cooler. However, in the heat st...
Claims
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IPC IPC(8): F28D20/00F28D20/02
CPCF28D20/0056F28D20/023F28D20/025Y02E60/14
Inventor 王俊杰郭璐娜季伟高诏诏陈六彪崔晨郭嘉
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI