Shaikh, Kaleemullah and Kazi, Salim Newaz and Mohd Zubir, Mohd Nashrul and Wong, KokHoe and Mohd Yusoff, Syamimi Aisyah and Khan, Wajahat Ahmed and Alam, Md Shadab and Abdullah, Shekh and Muhd Shukri, Muhd Hakimie (2023) Mitigation of CaCO3 fouling on heat exchanger surface using green functionalized carbon nanotubes (GFCNT) coating. Thermal Science and Engineering Progress, 42. ISSN 2451-9049, DOI https://doi.org/10.1016/j.tsep.2023.101878.
Full text not available from this repository.Abstract
Deposition of mineral foulants on the heat exchanger surface increases the thermal resistance and shortens the operating service life of heat exchangers. The inverse solubility characteristics of some mineral salts in the cooling water cause intensive mineral fouling on heated heat exchanger surfaces. The formation of fouling de-posits starts when mineral salts in water crystallize on the heated surface. In this study, a coating of MWCNT from the suspension of water, gum Arabic and MWCNT was applied on the surface of the heat exchanger to mitigate CaCO3 fouling. A 300 mgL-1 CaCO3 supersaturated solution was prepared and used for the foulant deposition on the heat transfer surfaces and analysis. The Field Emission Scanning Electron Microscopy (FESEM) was used for the investigation of CaCO3 depositions on the heat exchanger surface, its surface morphology, and develop correlation with the crystal growth, morphology and the coating introduced inhibition effect on fouling. The results revealed that the CaCO3 crystal formation can be considerably retarded using MWCNT coating layer as a fouling mitigation approach.
| Item Type: | Article |
|---|---|
| Funders: | Fundamental Research Grant Scheme - Ministry of Higher Education Malaysia [Grant No: FRGS/1/2019/TK03/UM/02/12 (FP143-2019A)], AMMP Centre, Centre for Energy Sciences, Universiti Malaya [Grant No: RMF0400-2021; RK001-2022 ; ST049-2022], Department of Mechanical Engineering, Universiti Malaya [Grant No: RMF0400-2021 ; RK001-2022 ; ST049-2022] |
| Uncontrolled Keywords: | Gum Arabic; Carbon Nanotube Coating Layer; Electrophoresis; Fouling Resistance; Overall Heat Transfer Co-efficient; Calcium Carbonate |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering Institute of Advanced Studies |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 06 Nov 2025 03:04 |
| Last Modified: | 06 Nov 2025 03:04 |
| URI: | http://eprints.um.edu.my/id/eprint/49798 |
Actions (login required)
 |
View Item |
