Energy Storage Science and Technology ›› 2020, Vol. 9 ›› Issue (6): 1729-1736.doi: 10.19799/j.cnki.2095-4239.2020.0168

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Research progress on thermochemical adsorption heat storage technology based on hydrate

Likui WENG1(), Yelong ZHANG2,3, Lin JIANG1, Yixuan JIA1, Linghua TAN2,3, Yi JIN1(), Yulong DING2,4   

  1. 1.Nanjing Jinhe Energy Material Company Limited, Nanjing 210047, Jiangsu, China
    2.School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, Jiangsu, China
    3.National Special Superfine Powder Engineering Research Center of China, Nanjing 210094, Jiangsu, China
    4.University of Birmingham, Birmingham B15 2TT, UK
  • Received:2020-05-07 Revised:2020-06-22 Online:2020-11-05 Published:2020-10-28
  • Contact: Yi JIN E-mail:likui.weng@jinhe-energy.com;yi.jin@jinhe-energy.com

Abstract:

The thermochemical adsorption heat storage has a higher heat storage density, a lower heat loss, and a long-term heat storage, which exhibit significant advantages over both sensible heat and phase change heat storages. This paper summarizes the developments in inorganic salt-H2O systems, called hydrated salts, for the thermochemical adsorption heat storage, including typical thermal chemisorption materials and chemisorption reactors. Hydrated salts for the thermochemical adsorption heat storage usually contain halide-H2O and sulphate-H2O. Although hydrated salts have high heat storage densities, their application in the thermochemical adsorption system still faces some problems, including the degradation of kinetic properties and reactor corrosion caused by the deliquescence and expansion agglomeration of hydrated salts. As a carrier for hydrated salts, a porous material is expected to solve the current technical problems. Moreover, the development of new porous carriers and the structural optimization of the thermochemical adsorption heat storage systems are expected as the keys to promoting the industrialization of the thermochemical adsorption heat storage technology.

Key words: heat storage, thermochemical, adsorption, hydrated salts, adsorption system

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