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Optimal operating conditions and configurations for humidification–dehumidification desalination cycles

Author(s)
Mitsos, Alexander; Mistry, Karan Hemant; Lienhard, John H
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Abstract
This article applies nonlinear programming techniques to optimize humidification–dehumidification (HD) desalination cycles for operating conditions that result in maximum gained output ratio (GOR). Closed air open water as well as open air open water cycles, each with either an air or a water heater, were considered in this analysis. Numerical optimization resulted in a substantial increase in GOR for all four cycle types compared to previous best-case conditions found using heuristic studies. The GOR of the cycles was found to decrease with increasing component terminal temperature difference (TTD). In addition, different cycles perform best at different temperature differences. Optimization also revealed that some counterintuitive design configurations can result in superior performance under the appropriate operating conditions.
Date issued
2011-01
URI
http://hdl.handle.net/1721.1/101908
Department
Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab; Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
International Journal of Thermal Sciences
Publisher
Elsevier
Citation
Mistry, Karan H., Alexander Mitsos, and John H. Lienhard. “Optimal Operating Conditions and Configurations for Humidification–dehumidification Desalination Cycles.” International Journal of Thermal Sciences 50, no. 5 (May 2011): 779–89.
Version: Author's final manuscript
ISSN
1290-0729

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