Packed bed heat storage/cooler
A technology of packed bed and heat storage, which is applied in the direction of heat storage equipment, indirect heat exchangers, heat exchanger types, etc., can solve the adverse effects of heat storage/cooler energy storage characteristics, the effective volume reduction of packed beds, and the temperature field Problems such as uneven distribution, to avoid uneven distribution of flow field, weaken the heat transfer process, and improve energy storage characteristics
Active Publication Date: 2022-04-22
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology
However, as the heat exchange process continues and the energy storage / release cycle continues to accumulate, the length of the temperature gradient in the packed bed along the axial direction (that is, the thermocline layer) continues to increase, resulting in a decrease in the effective volume of the packed bed.
At the same time, for a packed bed heat storage / cooler with a large volume and a large energy storage scale, there will also be a problem of uneven distribution of the flow field, which will lead to uneven distribution of the temperature field, thereby affecting Detrimental effect on the energy storage characteristics of the heat storage / cooler
Method used
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Embodiment Construction
[0037] 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.
[0038] 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 thus should not be construed as lim...
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The present invention provides a packed bed heat storage / cooler, which includes a shell, and the inside of the shell is provided with a plurality of heat insulation layers, and each of the heat insulation layers is sequentially arranged at intervals along the axial direction of the shell, The heat insulation layer can divide the interior of the housing into a plurality of filling chambers, each of which is filled with an energy storage medium, and the two ends of each of the filling chambers along the axial direction are respectively provided with There is a flow-equalizing baffle, and sieve holes are arranged on the flow-equalizing baffle. The packed bed heat storage / cooler provided by the present invention can make the distribution of the flow field and temperature field inside the heat storage / cooler more uniform, thereby improving the energy storage characteristics of the heat storage / cooler.
Description
technical field [0001] The invention relates to the technical field of energy storage equipment, in particular to a packed bed 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. However, the energy storage efficiency and heat transfer performance of the heat storage / cooler in the form of a packed bed directly depend on the internal temperature field and flow field distribution of the heat storage / cooler. Therefore, the optimization of the temperature field and flow field of the heat storage / cooler is particularly important. important. [0003] During the energy storage and energy release process of the existing packed bed heat storage / cooler, the heat exchange fluid enters the packed bed alon...
Claims
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IPC IPC(8): F28D20/00
CPCF28D20/00F28D2020/0008Y02E60/14
Inventor 季伟郭璐娜高诏诏陈六彪崔晨郭嘉王俊杰
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI