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https://doi.org/10.21256/zhaw-27007| Publication type: | Article in scientific journal |
| Type of review: | Peer review (publication) |
| Title: | Heat transfer constraints and performance mapping of a closed liquid sorption heat storage process |
| Authors: | Fumey, Benjamin Weber, Robert Baldini, Luca |
| et. al: | No |
| DOI: | 10.1016/j.apenergy.2023.120755 10.21256/zhaw-27007 |
| Published in: | Applied Energy |
| Volume(Issue): | 335 |
| Issue: | 120755 |
| Issue Date: | 1-Apr-2023 |
| Publisher / Ed. Institution: | Elsevier |
| ISSN: | 0306-2619 |
| Language: | English |
| Subjects: | Liquid sorption heat storage; Sodium hydroxide; Performance evaluation and limitation; Nonlinear temperature to heat correlation; Lab scale demonstrator; Performance mapping |
| Subject (DDC): | 620: Engineering |
| 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 thermo-dynamic 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. In this paper, we present the background for performance analysis with emphasis on this nonlinear relationship. We propose a method for performance mapping, including the sorbent equilibrium line (the state where the sorbent is in temperature, concentration and vapor pressure equilibrium) and the unavoidable deviation from this line due to the afore stated non-linearity. As an example of this proposed mapping, we visualize results from an absorption process with liquid aqueous sodium hydroxide and water. Due to the nonlinear temperature rise in heat release, we conclude that it is important to operate a sorption heat storage system in a way that only the minimum required temperature rise is achieved. By doing so, the heat transport fluid capacity is increased in respect to the sorbent capacity, augmenting heat transfer and improving the energy density. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/27007 |
| Fulltext version: | Published version |
| License (according to publishing contract): | CC BY 4.0: Attribution 4.0 International |
| Departement: | Architecture, Design and Civil Engineering |
| Organisational Unit: | Institute for Building Technologies and Processes (IBP) |
| Appears in collections: | Publikationen Architektur, Gestaltung und Bauingenieurwesen |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 2023_Fumey-etal_Closed-liquid-sorption-heat-storage-process.pdf | 1.69 MB | Adobe PDF |  View/Open |
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Fumey, B., Weber, R., & Baldini, L. (2023). Heat transfer constraints and performance mapping of a closed liquid sorption heat storage process. Applied Energy, 335(120755). https://doi.org/10.1016/j.apenergy.2023.120755
Fumey, B., Weber, R. and Baldini, L. (2023) ‘Heat transfer constraints and performance mapping of a closed liquid sorption heat storage process’, Applied Energy, 335(120755). Available at: https://doi.org/10.1016/j.apenergy.2023.120755.
B. Fumey, R. Weber, and L. Baldini, “Heat transfer constraints and performance mapping of a closed liquid sorption heat storage process,” Applied Energy, vol. 335, no. 120755, Apr. 2023, doi: 10.1016/j.apenergy.2023.120755.
FUMEY, Benjamin, Robert WEBER und Luca BALDINI, 2023. Heat transfer constraints and performance mapping of a closed liquid sorption heat storage process. Applied Energy. 1 April 2023. Bd. 335, Nr. 120755. DOI 10.1016/j.apenergy.2023.120755
Fumey, Benjamin, Robert Weber, and Luca Baldini. 2023. “Heat Transfer Constraints and Performance Mapping of a Closed Liquid Sorption Heat Storage Process.” Applied Energy 335 (120755). https://doi.org/10.1016/j.apenergy.2023.120755.
Fumey, Benjamin, et al. “Heat Transfer Constraints and Performance Mapping of a Closed Liquid Sorption Heat Storage Process.” Applied Energy, vol. 335, no. 120755, Apr. 2023, https://doi.org/10.1016/j.apenergy.2023.120755.
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