A high-efficiency phase-change energy storage encapsulated ball with internal fins

Abstract

The invention discloses an efficient phase-change energy-storage packaging sphere with an inner fin. The efficient phase-change energy-storage packaging sphere comprises a packaging sphere shell, a fin assembly and a phase-change energy-storage material, wherein the appearance of the packaging sphere shell is spherical; the fin assembly is additionally mounted inside the packaging sphere shell; preferably, the fin assembly is constituted by one or more hollow tubular cylindrical needle fin bodies; the needle fin bodies are arranged inside the packaging sphere shell in a spatial three-dimensional geometric symmetric distribution manner, are mutually perpendicular along three directions, and are of an interior penetrating structure; and the space between the packaging sphere shell and the needle fin bodies is filled with a solid-liquid phase-change energy-storage material. When the phase-change material filling rate is guaranteed, the heat resistance of the inner wall side of the efficient phase-change energy-storage packaging sphere disclosed by the invention can be reduced, the entire heat exchange area can be enlarged, and then the heat transfer performance of the efficient phase-change energy-storage packaging sphere can be greatly improved compared with that of a common spherical packaging body; furthermore, the more uniform phase-change heat transfer process can be achieved; and the phase-change material utilization rate and the heat exchange efficiency of the efficient phase-change energy-storage packaging sphere can be greatly improved.

Description

technical field [0001] The invention relates to the field of phase change energy storage packaging, in particular to a high-efficiency phase change energy storage packaging ball with inner fins. Background technique [0002] Today, the development and utilization of clean energy has become the focus of global attention. However, renewable energy, such as wind energy, solar energy, tidal energy and other new energy sources, often has intermittent and periodic problems, which makes it impossible to match energy demand and supply in a timely manner. The energy storage system can store excess energy when the energy supply is sufficient, and then release it for use when the energy supply is insufficient. It is an effective technical solution to the above-mentioned mismatch between energy supply and demand. Currently common energy storage systems include sensible heat energy storage systems and latent heat energy storage systems. Among them, the latent heat energy storage system...

AI Technical Summary

Problems solved by technology

[0007] In view of the above defects of the prior art, the technical problems to be solved by the present invention include: (1) In the prior art, the phase change material is directly filled in the heat exchanger, which is easy to leak and difficult to repair, and the heat exchange area is relatively small, The heat transfer efficiency is low; (2) Adding materials with high thermal conductivity to phase change materials has problems such as reduced energy storage density, phase change temperature drift, and precipitation and separation of added materials after multiple cycles; (3) traditional internalless The heat transfer coefficient and heat transfer efficiency of the finned phase change energy storage package ball are small, and the phase change process of the phase change material is incomplete, and the utilization rate of the phase change material is low

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