Helium as a Carrier Gas in Humidification Dehumidification Desalination Systems
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Narayan-Helium_ASME_IMECE_paper_final.pdf
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554.47 KB
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Author(s)
Narayan, G. Prakash
Zubair, Syed M.
McGovern, Ronan Killian
Lienhard, John H
Date Issued
November 2011
Journal
Volume 1: Advances in Aerospace Technology; Energy Water Nexus; Globalization of Engineering; Posters
Publisher
ASME International
Citation
Narayan, G. Prakash, Ronan H. McGovern, John H. Lienhard, and Syed M. Zubair. “Helium as a Carrier Gas in Humidification Dehumidification Desalination Systems.” Volume 1: Advances in Aerospace Technology; Energy Water Nexus; Globalization of Engineering; Posters (2011). © 2011 ASME
Version
Final published version
Abstract
A promising technology for small scale seawater desalination is the humidification dehumidification (HDH) system. This technology has been widely investigated in recent years. Since existing HDH systems have very high specific energy consumption, the authors have previously invented several ways to increase the energy efficiency of these systems. Even for these relatively higher efficiency systems the dehumidifier is expected to be large, owing to the large thermal resistance associated with the presence of non-condensable carrier gas (air) in the system. In this manuscript, we demonstrate that changing the carrier gas from air to helium a potential solution to this problem. In addition, the energy performance of a brine heated HDH system using helium relative to those using air is analysed in detail through well established on-design models for the components in the system.
MIT Department
Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1115/IMECE2011-62875
