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Experimental research on chemisorption energy storage performance for industrial waste heat recovery and conversion

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  • Tian, Ye
  • Zhang, Chao
  • Huang, Haifeng
  • Shen, Jiale
  • Zhou, Xiong
  • Hu, Lian
  • Ma, Wensheng

Abstract

This study investigates a solid chemisorption energy storage system utilizing a multi-component chloride salt composite adsorbent with a mass ratio of NH4Cl, CaCl2, MnCl2, and expanded natural graphite treated with sulfuric acid (ENG-TSA). The system features a shell-and-tube heat exchanger and analyzes refrigeration and heat storage performance under varying industrial low-temperature waste heat (60–110 °C) conditions, with condensation and evaporation temperatures of 0–25 °C and discharging temperatures of 40–60 °C. The results indicate that the multi-salt composite adsorbent reduces hysteresis between adsorption and desorption stages. The highest coefficient of performance (COP) and specific cooling power (SCP) were 0.461 and 328 W/kg, respectively, at an evaporation temperature of 25 °C and a charging temperature of 110 °C. Excessively long cycle times negatively affect system efficiency, with optimal performance achieved at a 40-min cycle. The findings highlight the system's effectiveness for industrial low-grade waste heat recovery, providing a solid foundation for future reactor design and material selection.

Suggested Citation

  • Tian, Ye & Zhang, Chao & Huang, Haifeng & Shen, Jiale & Zhou, Xiong & Hu, Lian & Ma, Wensheng, 2024. "Experimental research on chemisorption energy storage performance for industrial waste heat recovery and conversion," Energy, Elsevier, vol. 309(C).
    • Handle: RePEc:eee:energy:v:309:y:2024:i:c:s0360544224029438
    DOI: 10.1016/j.energy.2024.133168
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