Experimental and Numerical Investigation of Combined Sensible/Latent Thermal Energy Storage for High-Temperature Applications
| Autor: | Lukas Geissbühler, Simone Zavattoni, Maurizio Barbato, Giw Zanganeh, Andreas Haselbacher, Aldo Steinfeld |
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| Jazyk: | German<br />English<br />French |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | CHIMIA, Vol 69, Iss 12 (2015) |
| Druh dokumentu: | article |
| ISSN: | 0009-4293 2673-2424 |
| DOI: | 10.2533/chimia.2015.799 |
| Popis: | Combined sensible/latent heat storage allows the heat-transfer fluid outflow temperature during discharging to be stabilized. A lab-scale combined storage consisting of a packed bed of rocks and steel-encapsulated AlSi12 was investigated experimentally and numerically. Due to the small tank-to-particle diameter ratio of the lab-scale storage, void-fraction variations were not negligible, leading to channeling effects that cannot be resolved in 1D heat-transfer models. The void-fraction variations and channeling effects can be resolved in 2D models of the flow and heat transfer in the storage. The resulting so-called bypass fraction extracted from the 2D model was used in the 1D model and led to good agreement with experimental measurements. |
| Databáze: | Directory of Open Access Journals |
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