A Comprehensive Investigation of Low Proportion TiO2-POE Nanolubricant Stability for Residential Air Conditioning System Application

Nugroho, Agus and Rizalman, Mamat and Bo, Zhang and Wan Hamzah, Azmi and Mohd Fairusham, Ghazali and Yusaf, Talal and Fitri, Khoerunnisa (2023) A Comprehensive Investigation of Low Proportion TiO2-POE Nanolubricant Stability for Residential Air Conditioning System Application. In: Proceedings of the 2nd Energy Security and Chemical Engineering Congress (ESCHE 2021) , 3-5 November 2021 , Virtual Conference, Universiti Malaysia Pahang, Malaysia. pp. 147-163.. ISBN 978-981-19-4425-3

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Abstract

The paper aims to expound on the comprehensive experimental investigation of the stability of TiO2-Polyolester (POE) nanolubricant. A magnetic stirrer was used to disperse TiO2 nanopowder into POE lubricant for 30 min. The six samples were then subjected to various ultrasonication treatments lasting 40-, 60-, 80-, 100-, and 120-min. Stability analysis was performed in three stages: visual observation, Ultra Violet (UV) visible spectrophotometric analysis, and measurement of the absolute zeta potential. The results showed that sample without ultrasonication treatment had substantial agglomeration as compared to other samples. The absorbance ratio of the sample without ultrasonication treatment is 0.33. The absorbance ratio value escalated as the duration of the ultrasonication treatment on the sample increases. After ultrasonication treatment for 40–120 min, the absorbance ratio increased by 34–117%. The samples treated with 120 min of ultrasonication showed the highest level of stability, as evidenced by the high absorbance ratio and zeta potential values of 0.95 and −80.48 mV, respectively. As a result, the findings suggests that TiO2-POE with ultrasonication treatment for 120 min could generate the excellent stability compared to other samples in this experiment.

Item Type:	Conference or Workshop Item (Lecture)
Additional Information:	Part of the Lecture Notes in Mechanical Engineering book series (LNME)
Uncontrolled Keywords:	TiO2-POE nanolubricant stability, interlude ultrasonication, UV vis-ible spectrophotometry, zeta potential
Subjects:	T Technology > TD Environmental technology. Sanitary engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division:	Institute of Postgraduate Studies College of Engineering
Depositing User:	Noorul Farina Arifin
Date Deposited:	07 Oct 2022 03:01
Last Modified:	01 Dec 2023 07:19
URI:	http://umpir.ump.edu.my/id/eprint/34982
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