Solid-liquid phase change heat storing and taking device of three-dimensional fin structure

Abstract

The invention provides a solid-liquid phase change heat storing and taking device of a three-dimensional fin structure. The solid-liquid phase change heat storing and taking device comprises a base tube of a tubular structure, three-dimensional rib mechanisms and fixing pieces, wherein the base tube is used for serving as a heat carrying fluid circulation pipeline. The three-dimensional rib mechanisms are arranged on the periphery of the base tube and used for conducting equivalent heat conduction between heat carrying fluid in the base tube and heat storage media outside the base tube. Each three-dimensional rib mechanism comprises a rib base, longitudinal ribs and ring-direction ribs. The fixing pieces are used for detachably connecting the three-dimensional rib mechanisms to the periphery of the base tube wall. The ribs are reasonably arranged in the three-dimensional space direction, the rib materials are high-heat-conductivity-coefficient materials, accordingly, it is guaranteed that in the heat storing and taking process, the temperature changing rates of phase change media at different positions can get close to be consistent, meanwhile, the equivalent heat conductivity coefficient of the phase change media is improved, the response rate in the heat storing and taking process is improved, and guarantee is provided for stable running of a heat storing and taking system.

Description

Technical field [0001] The invention relates to the field of heat storage technology, and in particular to a solid-liquid-phase heat storage and heat extraction device with a three-dimensional fin structure. Background technique [0002] In the field of heat storage technology, since the solid-liquid phase change heat storage technology uses the latent heat of the heat storage material during the solid-liquid exchange, compared to sensible heat storage, the same heat storage material, the same quality, and the same temperature rise, More heat can be stored, and when the heat source is a phase change heat carrier fluid, the latent heat released when the high temperature heat carrier fluid condenses should be stored in the phase change latent heat of the corresponding heat storage medium. Similarly, when the cold source is a phase-change heat-carrying fluid, the latent heat absorbed during the evaporation process of the low-temperature heat-carrying fluid should come from the phase...

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Problems solved by technology

However, common fins are not suitable for phase change medium heat storage technology, because for pin fins and straight fins, the radial arrangement makes the mass of phase change medium increase with the increase of radial radius, while These two kinds of ribs do not increase the heat transfer area correspondingly, so it is impossible to ensure uniform heating of each area of ​​the phase change medium; for the spiral ring rib and the H-shaped ring rib, although these two kinds of ribs realize The increase of the heat transfer area correspondingly increases, but the increase of the heat transfer area in a single dimension still cannot achieve uniform heating of each area of ​​the phase change medium

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