Energy Storage Science and Technology ›› 2018, Vol. 7 ›› Issue (5): 881-887.doi: 10.12028/j.issn.2095-4239.2018.0078

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Recent progress in salt hydrate sodium acetate based phase change materials for heat storage

LI Jintian1, MAO Jinfeng2   

  1. 1 Naval Logistics College, Tianjin 300450, China;
    2 Army Engineering University National Defense Engineering Institute, Nanjing 210007, Jiangsu, China
  • Received:2018-05-23 Revised:2018-06-13 Online:2018-09-01 Published:2018-09-01
  • Contact: 10.12028/j.issn.2095-4239.2018.0078

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

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