Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system
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 t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/102079 https://orcid.org/0000-0002-2901-0638 https://orcid.org/0000-0002-4583-1057 |
| _version_ | 1826199403345477632 |
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| author | Miller, Jacob A. Zubair, Syed M. Thiel, Gregory Parker Lienhard, John H |
| author2 | Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab |
| author_facet | Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab Miller, Jacob A. Zubair, Syed M. Thiel, Gregory Parker Lienhard, John H |
| author_sort | Miller, Jacob A. |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T11:19:20Z |
| format | Article |
| id | mit-1721.1/102079 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:19:20Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1020792023-02-17T02:05:35Z Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system Miller, Jacob A. Zubair, Syed M. Thiel, Gregory Parker Lienhard, John H Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab Massachusetts Institute of Technology. Department of Mechanical Engineering Thiel, Gregory Parker Miller, Jacob A. Lienhard, John H. 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. Center for Clean Water and Clean Energy at MIT and KFUPM (Project R4-CW-08) Eni S.p.A. (Firm) MIT Martin Family Society of Fellows for Sustainability 2016-04-01T18:02:20Z 2016-04-01T18:02:20Z 2013-01 2012-12 Article http://purl.org/eprint/type/JournalArticle 00119164 http://hdl.handle.net/1721.1/102079 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. https://orcid.org/0000-0002-2901-0638 https://orcid.org/0000-0002-4583-1057 en_US http://dx.doi.org/10.1016/j.desal.2012.12.025 Desalination Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Lienhard via Angie Locknar |
| spellingShingle | Miller, Jacob A. Zubair, Syed M. Thiel, Gregory Parker Lienhard, John H Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system |
| title | Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system |
| title_full | Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system |
| title_fullStr | Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system |
| title_full_unstemmed | Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system |
| title_short | Effect of mass extractions and injections on the performance of a fixed-size humidification–dehumidification desalination system |
| title_sort | effect of mass extractions and injections on the performance of a fixed size humidification dehumidification desalination system |
| url | http://hdl.handle.net/1721.1/102079 https://orcid.org/0000-0002-2901-0638 https://orcid.org/0000-0002-4583-1057 |
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