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dc.contributor.authorCheaib, Farah K.
dc.contributor.authorLienhard, John H.
dc.contributor.authorChehayeb, Karim Malek
dc.date.accessioned2015-11-05T13:31:43Z
dc.date.available2015-11-05T13:31:43Z
dc.date.issued2014-08
dc.identifier.isbn978-1-56700-421-2
dc.identifier.urihttp://hdl.handle.net/1721.1/99725
dc.description.abstractThe humidification-dehumidification (HDH) desalination system can be advantageous in small-scale, off-grid applications. The main drawback of this technology has been its low energy efficiency, which results in high water production costs. Previous studies have approached this issue through thermodynamic balancing of the system; however, most theoretical work on the balancing of HDH has followed a fixed-effectiveness approach that does not explicitly consider transport processes in the components. Fixing the effectiveness of the heat and mass exchangers allows them to be modeled without explicitly sizing the components and gives insight on how the cycle design can be improved. However, linking the findings of fixed-effectiveness models to actual systems can be challenging, as the performance of the components depends mainly on the available surface areas and the flow rates of the air and water streams. In this study, we present a robust numerical solution algorithm for a heat and mass tranfer model of a complete humidification-dehumidification system consisting of a packed-bed humidifier and a multi-tray bubble column dehumidifier. We look at the effect of varying the water-to-air mass flow rate ratio on the energy efficiency of the system, and we compare the results to those reached following a fixed-effectiveness approach. In addition, we study the effect of the top and bottom temperatures on the performance of the system. We recommended the implementation a control system that varies the mass flow rate ratio in order to keep the system balanced in off-design conditions, especially with varying top temperature.en_US
dc.description.sponsorshipCenter for Clean Water and Clean Energy at MIT and KFUPM (Project R4-CW-08)en_US
dc.language.isoen_US
dc.publisherBegell House Inc.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1615/IHTC15.eef.008995en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceChehayeben_US
dc.titleA Numerical Solution Algorithm for a Heat and Mass Transfer Model of a Desalination System Based on Packed-Bed Humidification and Bubble Column Dehumidificationen_US
dc.typeArticleen_US
dc.identifier.citationChehayeb, Karim, Farah K. Cheaib, and John H. Lienhard. “A Numerical Solution Algorithm for a Heat and Mass Transfer Model of a Desalination System Based on Packed-Bed Humidification and Bubble Column Dehumidification.” Proceedings of the 15th International Heat Transfer Conference (2014).en_US
dc.contributor.departmentMassachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Laben_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.approverChehayeb, Karim Maleken_US
dc.contributor.mitauthorChehayeb, Karim Maleken_US
dc.contributor.mitauthorLienhard, John H.en_US
dc.relation.journalProceedings of the 15th International Heat Transfer Conferenceen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/ConferencePaperen_US
eprint.statushttp://purl.org/eprint/status/NonPeerRevieweden_US
dspace.orderedauthorsChehayeb, Karim; Cheaib, Farah K.; Lienhard, John H.en_US
dc.identifier.orcidhttps://orcid.org/0000-0003-3559-9167
dc.identifier.orcidhttps://orcid.org/0000-0002-2901-0638
mit.licenseOPEN_ACCESS_POLICYen_US


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