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Heat-pump/energy-store using silica gel and water as a working pair

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  • Tahat, M. A.

Abstract

The possibilty of using silica gel and water as a reversible pair, in a thermochemical heat-pump/energy-store has been studied theoretically and experimentally during both heating and cooling modes. With silica gel absorbing water by 25±2% of the dry silica gel's weight, the heat of adsorption and the heat of wetting of 2712.43±30 kJ/kg SiO2 and 94.43± 15 kJ/kg SiO2 have been achieved respectively. The concentration rate for the two reaction pair was investigated and a general relationship that governed the adsorption rate with time has been deduced.

Suggested Citation

  • Tahat, M. A., 2001. "Heat-pump/energy-store using silica gel and water as a working pair," Applied Energy, Elsevier, vol. 69(1), pages 19-27, May.
    • Handle: RePEc:eee:appene:v:69:y:2001:i:1:p:19-27
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    Cited by:

    1. Yu, N. & Wang, R.Z. & Lu, Z.S. & Wang, L.W. & Ishugah, T.F., 2014. "Evaluation of a three-phase sorption cycle for thermal energy storage," Energy, Elsevier, vol. 67(C), pages 468-478.
    2. Rickard Erlund & Ron Zevenhoven, 2020. "Simulations on Design and System Performance of Building Heating Boosted by Thermal Energy Storage (TES) with Magnesium Hydro Carbonates/Silica Gel," Energies, MDPI, vol. 13(17), pages 1-14, September.
    3. Rickard Erlund & Ron Zevenhoven, 2018. "Hydration of Magnesium Carbonate in a Thermal Energy Storage Process and Its Heating Application Design," Energies, MDPI, vol. 11(1), pages 1-16, January.
    4. Cabeza, Luisa F. & Solé, Aran & Barreneche, Camila, 2017. "Review on sorption materials and technologies for heat pumps and thermal energy storage," Renewable Energy, Elsevier, vol. 110(C), pages 3-39.
    5. Demir, Hasan & Mobedi, Moghtada & Ülkü, Semra, 2008. "A review on adsorption heat pump: Problems and solutions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(9), pages 2381-2403, December.

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