eprintid: 20466
rev_number: 3
eprint_status: archive
userid: 1
dir: disk0/00/02/04/66
datestamp: 2026-01-29 06:29:17
lastmod: 2026-01-29 06:29:17
status_changed: 2026-01-29 06:29:17
type: article
metadata_visibility: show
creators_name: Chairul, Imran Sutan
creators_name: Bakar, Norazhar Abu
creators_name: Othman, Md Nazri
creators_name: Ghani, Sharin Ab
creators_name: Aziz, Nur Hakimah Ab
title: Assessment of neutralized waste cooking oil as a potential transformer dielectric liquid
ispublished: pub
note: Cited by: 3
abstract: When an oil-immersed transformer fails because of a short circuit, fire can occur because of the relatively low flash point of the mineral insulating oil. One of the ways to overcome this problem is to replace mineral insulating oil with vegetable-based insulating oils of higher flash points. This study explores the potential of waste cooking oil as a transformer dielectric liquid. The waste cooking oil used in this study is a vegetable-based oil with a high flash point. However, its acidity is above the permissible limit, which hinders its use in transformers. Therefore, the waste cooking oil was neutralized with caustic soda (normality: 1.0, 2.0, 3.0, 4.0, and 5.0 N) at a temperature of 70°C and stirring speed of 400 rpm for 5 min. The physical, chemical, and electrical properties of the neutralized waste cooking oil samples were determined. The results showed that the waste cooking oil neutralized with caustic soda (normality: 2.0 N) had the lowest acidity (0.2825 mg KOH/g). The breakdown voltage and viscosity of this oil sample were 29 kV and 40.92 mm2/s, respectively, which fulfilled the specifications of the IEEE C57.147 standard. In addition, this oil sample had a flash point of 260°C, which fulfilled the requirement of the IEC 62770 standard. Based on these results, it can be concluded that the neutralized waste cooking oil sample (normality: 2.0 N) has potential as a transformer dielectric liquid. © 2020 PENERBIT AKADEMIA BARU-All rights reserved.
date: 2020
publisher: Penerbit Akademia Baru
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082468029&partnerID=40&md5=0dc2b026d8a9a7303cdd9c7aa4ac0efe
full_text_status: none
publication: Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
volume: 66
number: 1
pagerange: 76 – 83
refereed: TRUE
issn: 22897879
citation:   Chairul, Imran Sutan and Bakar, Norazhar Abu and Othman, Md Nazri and Ghani, Sharin Ab and Aziz, Nur Hakimah Ab  (2020) Assessment of neutralized waste cooking oil as a potential transformer dielectric liquid.  Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 66 (1).  76 – 83.  ISSN 22897879