Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems
Relative to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HDH) Desalination cycle, air heating accounts for advantages in cycle performance. Solar collec...
| Main Authors: | , , |
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| Format: | Article |
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American Society of Mechanical Engineers
2018
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| Online Access: | http://hdl.handle.net/1721.1/119809 https://orcid.org/0000-0002-2901-0638 |
| _version_ | 1811083161052905472 |
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| author | Zubair, Syed M. Summers, Edward K Lienhard, John H. |
| author2 | Summers, Edward K |
| author_facet | Summers, Edward K Zubair, Syed M. Summers, Edward K Lienhard, John H. |
| author_sort | Zubair, Syed M. |
| collection | MIT |
| description | Relative to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HDH) Desalination cycle, air heating accounts for advantages in cycle performance. Solar collectors can be over 40% of an air-heated HDH system’s cost, thus design optimization is crucial. Best design practices and sensitivity to material properties for solar air heaters are investigated, and absorber solar absorptivity and glazing transmissivity are found to have the strongest effect on performance. Wind speed is also found to have an impact on performance. Additionally a well designed, and likely low cost, collector includes a double glazing and roughened absorber plates for superior heat transfer to the airstream. A collector in this configuration performs better than current collectors with an efficiency of 58% at a normalized gain of 0.06 Km[superscript 2]/W. |
| first_indexed | 2024-09-23T12:24:31Z |
| format | Article |
| id | mit-1721.1/119809 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:24:31Z |
| publishDate | 2018 |
| publisher | American Society of Mechanical Engineers |
| record_format | dspace |
| spelling | mit-1721.1/1198092022-10-01T09:09:16Z Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems Zubair, Syed M. Summers, Edward K Lienhard, John H. Summers, Edward K Lienhard, John H. Relative to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HDH) Desalination cycle, air heating accounts for advantages in cycle performance. Solar collectors can be over 40% of an air-heated HDH system’s cost, thus design optimization is crucial. Best design practices and sensitivity to material properties for solar air heaters are investigated, and absorber solar absorptivity and glazing transmissivity are found to have the strongest effect on performance. Wind speed is also found to have an impact on performance. Additionally a well designed, and likely low cost, collector includes a double glazing and roughened absorber plates for superior heat transfer to the airstream. A collector in this configuration performs better than current collectors with an efficiency of 58% at a normalized gain of 0.06 Km[superscript 2]/W. Center for Clean Water and Clean Energy at MIT and KFUPM 2018-12-20T20:58:01Z 2018-12-20T20:58:01Z 2010-04 2018-12-12T18:12:39Z Article http://purl.org/eprint/type/JournalArticle 978-0-7918-4942-2 http://hdl.handle.net/1721.1/119809 Summers, Edward K., John H. Lienhard, and Syed M. Zubair. “Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems.” Proceedings of the 14th International Heat Transfer Conference, 8-13 August, 2010, Washington, D.C., ASME, 2010. © 2010 by ASME https://orcid.org/0000-0002-2901-0638 http://dx.doi.org/10.1115/IHTC14-23214 Proceedings of the 14th International Heat Transfer Conference 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. application/pdf American Society of Mechanical Engineers ASME |
| spellingShingle | Zubair, Syed M. Summers, Edward K Lienhard, John H. Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems |
| title | Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems |
| title_full | Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems |
| title_fullStr | Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems |
| title_full_unstemmed | Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems |
| title_short | Air-Heating Solar Collectors for Humidification-Dehumidification Desalination Systems |
| title_sort | air heating solar collectors for humidification dehumidification desalination systems |
| url | http://hdl.handle.net/1721.1/119809 https://orcid.org/0000-0002-2901-0638 |
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