DC Field | Value | Language |
---|---|---|
dc.contributor.author | Che, Sanghyun | ko |
dc.contributor.author | Kim, Juwon | ko |
dc.contributor.author | Jeon, Jaeheon | ko |
dc.contributor.author | Chang, Daejun | ko |
dc.date.accessioned | 2024-07-01T09:00:16Z | - |
dc.date.available | 2024-07-01T09:00:16Z | - |
dc.date.created | 2024-06-25 | - |
dc.date.issued | 2024-01 | - |
dc.identifier.citation | JOURNAL OF ENERGY STORAGE, v.77 | - |
dc.identifier.issn | 2352-152X | - |
dc.identifier.uri | http://hdl.handle.net/10203/320093 | - |
dc.description.abstract | In this study, the feasibility of gas injection for enhancing heat transfer in a molten salt thermal storage system was experimentally investigated. The convective heat transfer coefficient induced by the gas injection was quantitatively measured. A predictive model was developed to estimate the heat transfer coefficient with respect to the gas injection rate. A comparative analysis between gas-injection and non-injection cases was also performed from a thermodynamic perspective to verify the feasibility of the method. The heat transfer coefficient was within the range of 359-1283 W/m2-K, depending on the gas injection rate. The developed model estimated the measured values within an average absolute error of 2%. From the comparative analysis, the gas injection method improved thermal efficiency from 86.3% to 95.1%. The energy loss induced by the gas injection was within the range of 0.2%-1.1% of the total stored energy. The gas injection also shortened the energy discharge time by 32%-41% owing to the heat transfer enhancement. The proposed method also improved the system performance by enhancing the exergy transfer rate from the salt to the water. These results indicate that a gas injection method is a potential candidate for improving molten salt thermal storage systems. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Thermodynamic analysis of molten salt-based single-tank thermal energy storage system with heat transfer enhanced by gas injection | - |
dc.type | Article | - |
dc.identifier.wosid | 001141305700001 | - |
dc.identifier.scopusid | 2-s2.0-85179760919 | - |
dc.type.rims | ART | - |
dc.citation.volume | 77 | - |
dc.citation.publicationname | JOURNAL OF ENERGY STORAGE | - |
dc.identifier.doi | 10.1016/j.est.2023.109959 | - |
dc.contributor.localauthor | Chang, Daejun | - |
dc.contributor.nonIdAuthor | Kim, Juwon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Energy storage system | - |
dc.subject.keywordAuthor | Gas injection | - |
dc.subject.keywordAuthor | Heat transfer enhancement | - |
dc.subject.keywordAuthor | Molten salt | - |
dc.subject.keywordAuthor | Thermal storage system | - |
dc.subject.keywordPlus | TRANSFER FLUID | - |
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