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Thermochemical heat storage ability of ZnSO 4 · 7H 2 O as potential long‐term heat storage material
Author(s) -
Rehman Ata Ur,
Shah Muhammad Zahir,
Ali Aamir,
Zhao Tianyu,
Shah Rahim,
Ullah Ihsan,
Bilal Hazrat,
Khan Ahsan Riaz,
Iqbal Muhammad,
Hayat Asif,
Zheng Maosheng
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6077
Subject(s) - term (time) , chemistry , thermal energy storage , materials science , thermodynamics , physics , quantum mechanics
Summary ZnSO 4 ·7H 2 O is a promising thermochemical heat storage material. In this paper, we report a detailed thermodynamic study of ZnSO 4 ·7H 2 O based on hydration/dehydration, cyclicability, and water sorption performance. The TG‐DSC measurements reported that at below 120°C, 1747 and 1298 J g −1 enthalpy was recorded for dehydration and hydration, respectively. The relative‐humidity study showed that at 75% RH (0.148 g/g), the water sorption can be significantly improved compared to lower humidity (65% 0.131). The XRD study highlighted that the main structure of ZnSO 4 after thermal treatment remains unchanged.