Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study
The advancement of nanotechnology has demonstrated the ability of metal-oxide-based nanofluids (NFs) to produce high heat flux in microscale thermal applications. Convective heat transfer (HTC) and flow characteristics (pressure drop (ΔP) and friction factor (f)) of aqueous ZnO NFs' within a ci...
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2023
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| Online Access: | http://dx.doi.org/10.1016/j.csite.2023.102716 https://www.sciencedirect.com/science/article/pii/S2214157X23000229 http://hdl.handle.net/10576/65726 |
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| _version_ | 1857415083702878208 |
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| author | Qamar, Adnan |
| author2 | Shaukat, Rabia Imran, Shahid Farooq, Muhammad Amjad, Muhammad Anwar, Zahid Ali, Hassan Farhan, Muhammad Mujtaba, M.A. Korakianitis, Theodosios Kalam, M.A. Almomani, Fares |
| author2_role | author author author author author author author author author author author |
| author_facet | Qamar, Adnan Shaukat, Rabia Imran, Shahid Farooq, Muhammad Amjad, Muhammad Anwar, Zahid Ali, Hassan Farhan, Muhammad Mujtaba, M.A. Korakianitis, Theodosios Kalam, M.A. Almomani, Fares |
| author_role | author |
| dc.creator.none.fl_str_mv | Qamar, Adnan Shaukat, Rabia Imran, Shahid Farooq, Muhammad Amjad, Muhammad Anwar, Zahid Ali, Hassan Farhan, Muhammad Mujtaba, M.A. Korakianitis, Theodosios Kalam, M.A. Almomani, Fares |
| dc.date.none.fl_str_mv | 2023-02-28 2025-06-24T10:33:44Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.csite.2023.102716 Albatrni, H., Abou Elezz, A., Elkhatat, A., Qiblawey, H., & Almomani, F. (2024). A green route to the synthesis of highly porous activated carbon from walnut shells for mercury removal. Journal of Water Process Engineering, 58, 104802. 2214157X https://www.sciencedirect.com/science/article/pii/S2214157X23000229 http://hdl.handle.net/10576/65726 42 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Friction factor Pressure drop Heat transfer coefficient Mini tube Nanofluids Nanoparticles Reynolds number Dispersion stability Stabilising agents |
| dc.title.none.fl_str_mv | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | The advancement of nanotechnology has demonstrated the ability of metal-oxide-based nanofluids (NFs) to produce high heat flux in microscale thermal applications. Convective heat transfer (HTC) and flow characteristics (pressure drop (ΔP) and friction factor (f)) of aqueous ZnO NFs' within a circular mini tube (Di = 1.0 mm, L = 330 mm) were analyzed. Experiments were carried out under steady-state and varying flow rates using 0.012–0.048 wt % of NFs and sodium hexametaphosphate (SHMP) and acetylacetone (ACAC) as surfactants (SFs). Laminar flow and constant wall heat flux conditions were used to assess NFs heat transfer properties, ΔP and f. The viscosity (VC) and thermal conductivity (TC) of NFs exhibited a strong dependence on the operating temperature and NFs concentration. VC and TC increased by increasing the NFs concentration and decreased by increasing the operating temperature. Maximum VC and TC enhancement of 16.75% and 23.70% were achieved for SHMP-stabilised NFs, respectively. The average HTC increased by increasing NFs loading and flow rate, with HTCmax of 17.0% noticed for ACAC-stabilised NFs. The ΔPmax and fmax were 16.0% and 12.0%, respectively. Experimental and theoretical results showed a maximum deviation of ±7.0% and ±4.0%, respectively. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_718411ae79805c83ef9d1db0f1535fb4 |
| identifier_str_mv | Albatrni, H., Abou Elezz, A., Elkhatat, A., Qiblawey, H., & Almomani, F. (2024). A green route to the synthesis of highly porous activated carbon from walnut shells for mercury removal. Journal of Water Process Engineering, 58, 104802. 2214157X 42 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/65726 |
| publishDate | 2023 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| spelling | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental studyQamar, AdnanShaukat, RabiaImran, ShahidFarooq, MuhammadAmjad, MuhammadAnwar, ZahidAli, HassanFarhan, MuhammadMujtaba, M.A.Korakianitis, TheodosiosKalam, M.A.Almomani, FaresFriction factorPressure dropHeat transfer coefficientMini tubeNanofluidsNanoparticlesReynolds numberDispersion stabilityStabilising agentsThe advancement of nanotechnology has demonstrated the ability of metal-oxide-based nanofluids (NFs) to produce high heat flux in microscale thermal applications. Convective heat transfer (HTC) and flow characteristics (pressure drop (ΔP) and friction factor (f)) of aqueous ZnO NFs' within a circular mini tube (Di = 1.0 mm, L = 330 mm) were analyzed. Experiments were carried out under steady-state and varying flow rates using 0.012–0.048 wt % of NFs and sodium hexametaphosphate (SHMP) and acetylacetone (ACAC) as surfactants (SFs). Laminar flow and constant wall heat flux conditions were used to assess NFs heat transfer properties, ΔP and f. The viscosity (VC) and thermal conductivity (TC) of NFs exhibited a strong dependence on the operating temperature and NFs concentration. VC and TC increased by increasing the NFs concentration and decreased by increasing the operating temperature. Maximum VC and TC enhancement of 16.75% and 23.70% were achieved for SHMP-stabilised NFs, respectively. The average HTC increased by increasing NFs loading and flow rate, with HTCmax of 17.0% noticed for ACAC-stabilised NFs. The ΔPmax and fmax were 16.0% and 12.0%, respectively. Experimental and theoretical results showed a maximum deviation of ±7.0% and ±4.0%, respectively.The authors of the present investigation would like to pay their sincere gratitude to the University of Engineering and Technology (UET), Lahore, Pakistan, for providing funding and access to the scientific instruments for the execution of the present research investigation under Research Grant No. ORIC/105-ASRB/3084, ORIC/101-ASRB/4452 and ORIC/101-ASRB/4453. Open Access funding provided by the Qatar National Library.Elsevier2025-06-24T10:33:44Z2023-02-28Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.csite.2023.102716Albatrni, H., Abou Elezz, A., Elkhatat, A., Qiblawey, H., & Almomani, F. (2024). A green route to the synthesis of highly porous activated carbon from walnut shells for mercury removal. Journal of Water Process Engineering, 58, 104802.2214157Xhttps://www.sciencedirect.com/science/article/pii/S2214157X23000229http://hdl.handle.net/10576/6572642enhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/657262025-06-25T05:57:27Z |
| spellingShingle | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study Qamar, Adnan Friction factor Pressure drop Heat transfer coefficient Mini tube Nanofluids Nanoparticles Reynolds number Dispersion stability Stabilising agents |
| status_str | publishedVersion |
| title | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| title_full | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| title_fullStr | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| title_full_unstemmed | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| title_short | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| title_sort | Effect of surfactants on the convective heat transfer and pressure drop characteristics of ZnO/DIW nanofluids: An experimental study |
| topic | Friction factor Pressure drop Heat transfer coefficient Mini tube Nanofluids Nanoparticles Reynolds number Dispersion stability Stabilising agents |
| url | http://dx.doi.org/10.1016/j.csite.2023.102716 https://www.sciencedirect.com/science/article/pii/S2214157X23000229 http://hdl.handle.net/10576/65726 |