Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids
This study deals with an experimental investigation of the thermal performance of a prototype mechanical wet cooling tower with a counter flow arrangement. Different volume concentrations ranging from 0.18 to 0.50 vol.% of stable Al oxide (Al2O3), Zn oxide (ZnO), and Ti oxide (Ti2O3) nanoparticles o...
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AIMS Press
2024-10-01
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| Series: | AIMS Materials Science |
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| Online Access: | https://www.aimspress.com/article/doi/10.3934/matersci.2024045 |
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| author | Habibur Rahman Altab Hossain Mohammad Ali |
| author_facet | Habibur Rahman Altab Hossain Mohammad Ali |
| author_sort | Habibur Rahman |
| collection | DOAJ |
| description | This study deals with an experimental investigation of the thermal performance of a prototype mechanical wet cooling tower with a counter flow arrangement. Different volume concentrations ranging from 0.18 to 0.50 vol.% of stable Al oxide (Al2O3), Zn oxide (ZnO), and Ti oxide (Ti2O3) nanoparticles of 80, 35, and 70 nm diameter were considered. Water was taken as a base fluid, and the experiment was carried out at 60, 70, and 80 ℃, respectively, in laboratory conditions. The study revealed that an increase in the volume concentration of the nanofluids increased the cooling range, cooling efficiency, convective heat transfer coefficient, tower characteristic called number of transfer unit (NTU), and effectiveness of the cooling tower compared with water at the same mass flow rate and inlet temperature. However, increasing the volume concentration increased the viscosity of the nanofluids, leading to an increase in friction factor. For instance, for 0.18% volume concentration of ZnO, at an inlet water temperature of 66.4 ℃ and water/air (L/G) flow ratio of 1.93, the cooling range increased by 3.62%, cooling efficiency increased by 33.3%, and NTU increased by 50.5% compared with fresh water (FW). |
| format | Article |
| id | doaj-art-2b4691646c2144fa8267f6ff5c068ea7 |
| institution | Kabale University |
| issn | 2372-0484 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | AIMS Press |
| record_format | Article |
| series | AIMS Materials Science |
| spelling | doaj-art-2b4691646c2144fa8267f6ff5c068ea72025-01-24T01:30:26ZengAIMS PressAIMS Materials Science2372-04842024-10-0111593594910.3934/matersci.2024045Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluidsHabibur Rahman0Altab Hossain1Mohammad Ali2Department of Mechanical Engineering, Military Institute of Science and Technology (MIST), Dhaka-1216, BangladeshDepartment of Mechanical Engineering, Engineering Faculty (MIST), BMA, Chattogram-4315, BangladeshDepartment of Mechanical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka-1000, BangladeshThis study deals with an experimental investigation of the thermal performance of a prototype mechanical wet cooling tower with a counter flow arrangement. Different volume concentrations ranging from 0.18 to 0.50 vol.% of stable Al oxide (Al2O3), Zn oxide (ZnO), and Ti oxide (Ti2O3) nanoparticles of 80, 35, and 70 nm diameter were considered. Water was taken as a base fluid, and the experiment was carried out at 60, 70, and 80 ℃, respectively, in laboratory conditions. The study revealed that an increase in the volume concentration of the nanofluids increased the cooling range, cooling efficiency, convective heat transfer coefficient, tower characteristic called number of transfer unit (NTU), and effectiveness of the cooling tower compared with water at the same mass flow rate and inlet temperature. However, increasing the volume concentration increased the viscosity of the nanofluids, leading to an increase in friction factor. For instance, for 0.18% volume concentration of ZnO, at an inlet water temperature of 66.4 ℃ and water/air (L/G) flow ratio of 1.93, the cooling range increased by 3.62%, cooling efficiency increased by 33.3%, and NTU increased by 50.5% compared with fresh water (FW).https://www.aimspress.com/article/doi/10.3934/matersci.2024045cooling towervolume concentrationnanofluidscooling efficiencyntu |
| spellingShingle | Habibur Rahman Altab Hossain Mohammad Ali Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids AIMS Materials Science cooling tower volume concentration nanofluids cooling efficiency ntu |
| title | Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids |
| title_full | Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids |
| title_fullStr | Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids |
| title_full_unstemmed | Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids |
| title_short | Experimental investigation on cooling tower performance with Al2O3, ZnO and Ti2O3 based nanofluids |
| title_sort | experimental investigation on cooling tower performance with al2o3 zno and ti2o3 based nanofluids |
| topic | cooling tower volume concentration nanofluids cooling efficiency ntu |
| url | https://www.aimspress.com/article/doi/10.3934/matersci.2024045 |
| work_keys_str_mv | AT habiburrahman experimentalinvestigationoncoolingtowerperformancewithal2o3znoandti2o3basednanofluids AT altabhossain experimentalinvestigationoncoolingtowerperformancewithal2o3znoandti2o3basednanofluids AT mohammadali experimentalinvestigationoncoolingtowerperformancewithal2o3znoandti2o3basednanofluids |