Role of temperature, roughness and pressure in crystallization fouling from potable water on aluminium surface

Al-Gailani, Amthal; Sanni, Olujide; Charpentier, Thibaut V.J.; Barker, Richard; Crisp, Richard; Bruins, Jantinus H.; Neville, Anne

Abstract

This work evaluates the influence of surface temperature, roughness and system pressure on the crystallization fouling from potable water on an aluminium substrate. Experiments were conducted using two apparatus; one for temperature and roughness tests and another setup for pressure investigations. The findings show that a porous film of aluminium oxide forms on the aluminium substrate under all test conditions. Both temperature and surface roughness enhance the fouling rate with no obvious changes in the structure of the fouling layer. However, magnesium-calcium deposits were observed at the early stages of surface deposition. System pressure reduces the resistance to heat transfer as well as the scale amount on the surface. Moreover, the increase in pressure produces composite fouling of magnesium carbonate and calcium carbonate.

Citation

Al-Gailani, A., Sanni, O., Charpentier, T. V., Barker, R., Crisp, R., Bruins, J. H., & Neville, A. (2021). Role of temperature, roughness and pressure in crystallization fouling from potable water on aluminium surface. Thermal Science and Engineering Progress, 23, Article 100911. https://doi.org/10.1016/j.tsep.2021.100911

• Journal Article Type: Article
• Acceptance Date: Mar 8, 2021
• Online Publication Date: Mar 17, 2021
• Publication Date: Jun 1, 2021
• Deposit Date: Jun 17, 2022
• Journal: Thermal Science and Engineering Progress
• Electronic ISSN: 2451-9049
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 23
• Article Number: 100911
• DOI: https://doi.org/10.1016/j.tsep.2021.100911
• Keywords: Fouling; Aluminium; Pressure; Potable water; Calcium carbonate; Heat transfer
• Public URL: https://hull-repository.worktribe.com/output/4015408
• Related Public URLs: https://eprints.whiterose.ac.uk/172371/#:~:text=The%20findings%20show%20that%20a,structure%20of%20the%20fouling%20layer.