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dc.contributor.authorLefers, Ryan
dc.contributor.authorBettahalli Narasimha, Murthy Srivatsa
dc.contributor.authorNunes, Suzana Pereira
dc.contributor.authorFedoroff, Nina
dc.contributor.authorDavies, Philip A.
dc.contributor.authorLeiknes, TorOve
dc.identifier.citationLefers R, Bettahalli NMS, Nunes SP, Fedoroff N, Davies PA, et al. (2016) Liquid desiccant dehumidification and regeneration process to meet cooling and freshwater needs of desert greenhouses. Desalination and Water Treatment 57: 23430–23442. Available:
dc.description.abstractAgriculture accounts for ~70% of freshwater usage worldwide. Seawater desalination alone cannot meet the growing needs for irrigation and food production, particularly in hot, desert environments. Greenhouse cultivation of high-value crops uses just a fraction of freshwater per unit of food produced when compared with open field cultivation. However, desert greenhouse producers face three main challenges: freshwater supply, plant nutrient supply, and cooling of the greenhouse. The common practice of evaporative cooling for greenhouses consumes large amounts of fresh water. In Saudi Arabia, the most common greenhouse cooling schemes are fresh water-based evaporative cooling, often using fossil groundwater or energy-intensive desalinated water, and traditional refrigeration-based direct expansion cooling, largely powered by the burning of fossil fuels. The coastal deserts have ambient conditions that are seasonally too humid to support adequate evaporative cooling, necessitating additional energy consumption in the dehumidification process of refrigeration-based cooling. This project evaluates the use of a combined-system liquid desiccant dehumidifier and membrane distillation unit that can meet the dual needs of cooling and freshwater supply for a greenhouse in a hot and humid environment. © 2016 Balaban Desalination Publications. All rights reserved.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors wish to acknowledge and thank Shinthujan Selvanayagam of Aston University, who contributed design drawings for the direct contact desiccator, and Rami Alsouqi for his input related to commercial greenhouse systems.
dc.publisherInforma UK Limited
dc.rightsThis is an Accepted Manuscript of an article published by Taylor & Francis in Desalination and Water Treatment on April 19, 2016, available online:
dc.subjectGreenhouse cooling
dc.subjectLiquid desiccant regeneration
dc.subjectMembrane distillation
dc.titleLiquid desiccant dehumidification and regeneration process to meet cooling and freshwater needs of desert greenhouses
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.identifier.journalDesalination and Water Treatment
dc.contributor.institutionEvan Pugh Professor Emerita, Penn State University, University Park, PA 16802, USA
dc.contributor.institutionSustainable Environment Research Group, School of Engineering and Applied Science, Aston University, Birmingham, B4 7ET, UK
kaust.personLefers, Ryan
kaust.personBettahalli Narasimha, Murthy Srivatsa
kaust.personNunes, Suzana Pereira
kaust.personLeiknes, TorOve

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