Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach
In this study, new rotating discs solar still (SS) has been investigated with different discs’ configurations, thermal energy storage unit (TESU) and employing external reflectors. Three shapes of rotating discs (flat, finned and corrugated) have been studied at constant rotational speed of 0.1 rpm....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Alexandria Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016822000035 |
| _version_ | 1819291631522676736 |
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| author | M.M. Younes A.S. Abdullah Z.M. Omara F.A. Essa |
| author_facet | M.M. Younes A.S. Abdullah Z.M. Omara F.A. Essa |
| author_sort | M.M. Younes |
| collection | DOAJ |
| description | In this study, new rotating discs solar still (SS) has been investigated with different discs’ configurations, thermal energy storage unit (TESU) and employing external reflectors. Three shapes of rotating discs (flat, finned and corrugated) have been studied at constant rotational speed of 0.1 rpm. Four rotating discs are used on the back and side walls of the discs SS to increase the evaporation surface area of water and the exposed area to solar energy. The results showed that finned discs are the best for SS performance when compared with flat and corrugated discs. The improvement in productivity is 68%, 86% and 106% over the conventional SS for flat, corrugated and finned discs SS (FDSS), respectively. When employing TESU (Paraffin wax mixed with CuO nanoparticles) with emerging fins, the FDSS productivity showed 149% increase in productivity over the conventional SS. For further enhancement in FDSS productivity, external reflectors are utilized, where the productivity of FDSS with TESU and reflectors showed 184% productivity rise over the conventional SS. The thermal efficiency of the flat discs SS, corrugated discs SS, FDSS, FDSS-TESU and FDSS-TESU-reflectors is 44.5, 47, 50, 56.5 and 51.3%, respectively. The estimated costs per liter of produced freshwater from conventional SS and FDSS-TESU-reflectors are 0.024 and 0.014 $, respectively. |
| first_indexed | 2024-12-24T03:41:43Z |
| format | Article |
| id | doaj.art-fee3842b3a004f9ba85c61575dccc009 |
| institution | Directory Open Access Journal |
| issn | 1110-0168 |
| language | English |
| last_indexed | 2024-12-24T03:41:43Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj.art-fee3842b3a004f9ba85c61575dccc0092022-12-21T17:16:53ZengElsevierAlexandria Engineering Journal1110-01682022-10-01611074777487Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approachM.M. Younes0A.S. Abdullah1Z.M. Omara2F.A. Essa3Mechanical Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33516, EgyptPrince Sattam bin Abdulaziz University, College of Engineering, Department of Mechanical Engineering, Alkharj, 16273, Saudi Arabia; Mechanical Power Engineering Department, Faculty of Engineering, Tanta University, Tanta 31521, Egypt; Corresponding author at: Prince Sattam bin Abdulaziz University, College of Engineering, Department of Mechanical Engineering, Alkharj, 16273, Saudi Arabia.Mechanical Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33516, EgyptMechanical Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh 33516, EgyptIn this study, new rotating discs solar still (SS) has been investigated with different discs’ configurations, thermal energy storage unit (TESU) and employing external reflectors. Three shapes of rotating discs (flat, finned and corrugated) have been studied at constant rotational speed of 0.1 rpm. Four rotating discs are used on the back and side walls of the discs SS to increase the evaporation surface area of water and the exposed area to solar energy. The results showed that finned discs are the best for SS performance when compared with flat and corrugated discs. The improvement in productivity is 68%, 86% and 106% over the conventional SS for flat, corrugated and finned discs SS (FDSS), respectively. When employing TESU (Paraffin wax mixed with CuO nanoparticles) with emerging fins, the FDSS productivity showed 149% increase in productivity over the conventional SS. For further enhancement in FDSS productivity, external reflectors are utilized, where the productivity of FDSS with TESU and reflectors showed 184% productivity rise over the conventional SS. The thermal efficiency of the flat discs SS, corrugated discs SS, FDSS, FDSS-TESU and FDSS-TESU-reflectors is 44.5, 47, 50, 56.5 and 51.3%, respectively. The estimated costs per liter of produced freshwater from conventional SS and FDSS-TESU-reflectors are 0.024 and 0.014 $, respectively.http://www.sciencedirect.com/science/article/pii/S1110016822000035Discs solar stillCorrugatedFinnedDesalinationThermal storage materialNanoparticles |
| spellingShingle | M.M. Younes A.S. Abdullah Z.M. Omara F.A. Essa Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach Alexandria Engineering Journal Discs solar still Corrugated Finned Desalination Thermal storage material Nanoparticles |
| title | Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach |
| title_full | Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach |
| title_fullStr | Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach |
| title_full_unstemmed | Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach |
| title_short | Enhancement of discs’ solar still performance using thermal energy storage unit and reflectors: An experimental approach |
| title_sort | enhancement of discs solar still performance using thermal energy storage unit and reflectors an experimental approach |
| topic | Discs solar still Corrugated Finned Desalination Thermal storage material Nanoparticles |
| url | http://www.sciencedirect.com/science/article/pii/S1110016822000035 |
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