无机水合盐三水乙酸钠作相变储热材料的研究进展

doi:10.12028/j.issn.2095-4239.2018.0078

摘要/Abstract

摘要： 三水乙酸钠是一种研究较为广泛的无机水合盐类潜热储热材料，但其在储能工程应用中存在过冷、相分层及低导热率等问题。本文综述了解决这3类问题的国内外最新研究进展，目前主要采用试验法寻找成核剂和增稠剂来解决相分层和过冷问题，还没有找到理论依据来确定添加剂配方和用量。采用添加高导热率的物质来改善其导热效率，但三水乙酸钠的稳定性较差，应用于相变储热装置必须进行复合化、定型化、纳微化等处理。最后总结指出，三水乙酸钠储热材料的研究应该结合相变储热装置和系统进行，研制高充放热功率的储热换热器是关键，且应重点强化材料侧的传热效率。

关键词: 三水乙酸钠, 储热材料, 过冷, 相分层, 相变储热装置

Abstract: Sodium acetate trihydrate has been widely studied as an inorganic hydration salt based latent heat storage material. The key challenges in the use of such a material include super cooling, phase separation, and low thermal conductivity. This article reviews the progress to address the challenges. Current methods of resolving the phase separation and supercooling challenges are mainly empirical, involving the search for nucleating agents and thickeners, for which little has been found on the development of theoretical approaches to determine the formulation and dosage. The low thermal conductivity has been addressed through the addition of highly thermally conductive. It is concluded that considerations are needed from both the device and system level for an effective use of sodium acetate trihydrate for thermal energy storage.

Key words: sodium acetate trihydrate, thermal storage material, super cooling, phase separation, phase change thermal storage device

中图分类号:

TQ129

李金田, 茅靳丰. 无机水合盐三水乙酸钠作相变储热材料的研究进展[J]. 储能科学与技术, 2018, 7(5): 881-887.

LI Jintian, MAO Jinfeng. Recent progress in salt hydrate sodium acetate based phase change materials for heat storage[J]. Energy Storage Science and Technology, 2018, 7(5): 881-887.

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