Heat transfer constraints and performance mapping of a closed liquid sorption heat storage process

Benjamin Fumey, Robert Weber and Luca Baldini

Applied Energy, 2023, vol. 335, issue C, No S0306261923001198

Abstract: Sorption storage is a potential game changer for heat storage in buildings, providing high volumetric energy storage density and no loss over storage time. Application specific temperatures and material specific thermodynamic properties are recognized as key for potential performance evaluation. Nevertheless, in system operation, finite heat and mass transfer kinetics detract from the theoretical maximum performance. In this study, it is found that a nonlinear relationship between temperature gain and heat release of the sorbent, afflicts an unavoidable restriction to the performance potential. Heat transport increases as temperature gain decreases, bringing about a temperature induced heat transfer stagnation to a heat transport fluid with linear temperature to heat gain correlation.

Keywords: Liquid sorption heat storage; Sodium hydroxide; Performance evaluation and limitation; Nonlinear temperature to heat correlation; Lab scale demonstrator; Performance mapping (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2023.120755

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