Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.ecmx.2021.100121
DC Field | Value | |
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dc.title | Analysis and optimization of a modified Kalina cycle system for low-grade heat utilization | |
dc.contributor.author | Masrur Hossain, Mohammad | |
dc.contributor.author | Afnan Ahmed, Niyaz | |
dc.contributor.author | Abid Shahriyar, Md | |
dc.contributor.author | Monjurul Ehsan M. | |
dc.contributor.author | Riaz, Fahid | |
dc.contributor.author | Salehin, Sayedus | |
dc.contributor.author | Awais Salman, Chaudhary | |
dc.date.accessioned | 2022-10-13T06:40:33Z | |
dc.date.available | 2022-10-13T06:40:33Z | |
dc.date.issued | 2021-10-01 | |
dc.identifier.citation | Masrur Hossain, Mohammad, Afnan Ahmed, Niyaz, Abid Shahriyar, Md, Monjurul Ehsan M., Riaz, Fahid, Salehin, Sayedus, Awais Salman, Chaudhary (2021-10-01). Analysis and optimization of a modified Kalina cycle system for low-grade heat utilization. Energy Conversion and Management: X 12 : 100121. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ecmx.2021.100121 | |
dc.identifier.issn | 2590-1745 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/232999 | |
dc.description.abstract | Kalina cycle system (KCS) offers an attractive prospect to produce power by utilizing low-grade heat sources where traditional power cycles cannot be implemented. Intending to explore the potential of exploiting low-grade heat sources for conversion to electrical energy, this study proposes two modified power generation cycles based on KCS-34. A multi-phase expander is positioned between the Kalina separator and the second heat regenerator in the proposed X-modification. In contrast, it is located between the mixer and second regenerator for Y-modification. To explore the potential benefits and limitations of the proposed modifications contrasted with the KCS-34, thermodynamic modeling and optimization have been conducted. The influence of critical decision parameters on overall cycle performance is analyzed. The result elucidates that by implementing an additional multi-phase expander, a significant amount of energy can be extracted from a lean ammonia water loop and X-modification can deliver superior thermodynamic performance compared with the Y-modification and the original KCS-34. With a reduced turbine inlet pressure of 58 bar and an ammonia concentration of 80%, the X-modified cycle's efficiency reaches a peak value of 17% and a net power yield of 1015 kW. An increase of 6.35% can be achieved compared with the conventional KCS-34 operating at the same conditions. Maximum exergy destruction of the working substance was observed in the condenser. © 2021 The Author(s) | |
dc.publisher | Elsevier Ltd | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Scopus OA2021 | |
dc.subject | Kalina cycle system | |
dc.subject | Low-grade thermal source | |
dc.subject | Multi-phase expander | |
dc.subject | Thermodynamic analysis | |
dc.type | Article | |
dc.contributor.department | MECHANICAL ENGINEERING | |
dc.description.doi | 10.1016/j.ecmx.2021.100121 | |
dc.description.sourcetitle | Energy Conversion and Management: X | |
dc.description.volume | 12 | |
dc.description.page | 100121 | |
Appears in Collections: | Staff Publications Elements |
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