Novel synergetic integration of supercritical carbon dioxide Brayton cycle and adsorption desalination

Narasimhan, A and Kamal, R and Almatrafi, E (2022) Novel synergetic integration of supercritical carbon dioxide Brayton cycle and adsorption desalination. In: Energy, 238 .

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Abstract

High ambient conditions and high energy desalination technologies could penalize power cycle performance and this synergistic integration is proposed as a solution to address this challenge. A novel integration of closed loop recuperative supercritical carbon dioxide Brayton cycle with low temperature adsorption desalination cycle is investigated. Brayton cycle provides the heat source for the adsorption desalination cycle and the latter provides the cooling required for heat rejection in Brayton cycle. The integrated system is modeled and the performance is analyzed through energy, exergy analysis, and parametric studies. Finally, the integrated system performance is compared against a stand-alone cycle and literature for performance gains. A maximum improvement of about 9.1, 21.1, and 10.7 for energy efficiency, exergy efficiency, and overall system effectiveness were observed for the lowest chilled water temperature of 25 °C over typical ambient conditions of 35 °C. Maximum specific daily water production and specific cooling output at these conditions were 11.3 Formula presented and 195 Formula presented, an improvement of about 26% and 28% over typical ambient conditions. Finally, overall system effectiveness improvement of about 14.3% over a stand-alone system is achieved, compared to a maximum of 10% improvement for supercritical carbon dioxide and multi-effect desalination integrations. Better performance improvement achieved at lower turbine inlet temperatures compared to multi-effect systems warrant the advantage of synergetic integration of power cycles like the supercritical carbon dioxide Brayton cycle with less energy-intensive adsorption desalination.

Item Type:	Journal Article
Publication:	Energy
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to the Elsevier Ltd.
Keywords:	Adsorption; Brayton cycle; Carbon dioxide; Desalination; Energy efficiency; Exergy; Integrated control; Integration; Supercritical fluid extraction; Temperature, Adsorption desalination; Ambient conditions; Energy; Integrated systems; Performance; Power cycle; Sensitivity studies; Supercritical carbondioxides; Synergetic integration; Synergetics, Thermoanalysis, adsorption; carbon dioxide; cooling; desalination; heat source; low temperature; water temperature
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	08 Jul 2022 06:03
Last Modified:	08 Jul 2022 06:03
URI:	https://eprints.iisc.ac.in/id/eprint/74286

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