Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system
Name
Thiel_Desalination_2013_PersonalTypesetting.pdf
Size
567.71 KB
Format
Adobe PDF
Checksum (MD5)
1d4ba156adc9dfa21e087e352b6a4ad4
Author(s)
Miller, Jacob A.
Zubair, Syed M.
Thiel, Gregory Parker
Lienhard, John H
Date Issued
January 2013
Journal
Desalination
Publisher
Elsevier
Citation
Thiel, Gregory P., Jacob A. Miller, Syed M. Zubair, and John H. Lienhard. “Effect of Mass Extractions and Injections on the Performance of a Fixed-Size Humidification–dehumidification Desalination System.” Desalination 314 (April 2013): 50–58.
Version
Author's final manuscript
Abstract
The impact of mass extractions and injections as a method for increasing the energetic performance of fixed-size humidification–dehumidification desalination systems is examined. Whereas previous studies of this problem have been restricted to thermodynamic models, the use of a more complete model that includes transport provides the ability to quantify the impact of mass extractions/injections on a realizable, fixed-size system. For a closed air, open water cycle, the results show that a single water extraction from the dehumidifier to the humidifier increases the gained output ratio by up to 10%, with extractions higher in the cycle proving more effective. The sizing problem for the humidifier and dehumidifier under thermodynamically optimized conditions found in literature is also discussed, as is the impact of system size on overall performance of a system without extractions/injections. For a range of sizes, it is shown that a rough doubling of both dehumidifier and humidifier size results in a two- to three-fold increase in gained output ratio, with diminishing returns as the absolute sizes increase.
MIT Department
Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.desal.2012.12.025
