An investigation on rapeseed oil as potential insulating liquid

Katim, N. I. A.; Nasir, Mohd Solehin Mohd; Ishak, Mohd Taufiq; Hamid, M. H. A.

doi:10.1063/1.5022926

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…The Dielectric permittivity and dielectric loss of yellow oleander oil and methyl ester were measured according to IEC 60247 [22], using Rohde & Schwarz HM8118 Programmable LCR BRIDGE. The two parallel plates with a diameter of 30mm and a gap of 2.5mm were used and the electrodes were fully immersed in the sample.…”

Section: F Dielectric Loss and Dielectric Permittivitymentioning

confidence: 99%

Physicochemical and Dielectric Study on Nigerian Thevetia Peruviana as a Potential Green Alternative Fluid for Transformer Cooling/Insulation

Oparanti

Salaudeen²,

Adekunle³

et al. 2022

Waste Biomass Valor

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Vegetable oil has shown a promising behaviour in replacing mineral insulating oil for transformer insulation due to the environmental unfriendliness of mineral oil. However, attention was placed mostly on the edible oil which may eventually lead to food competition. In this work ester from Thevetia Peruviana oil, non-edible vegetable oil was considered as alternative oil for transformer insulation. The functional groups and the ngerprints of the synthesized methyl ester from the Yellow oleander oil were con rmed using Fourier Transform Infrared (FTIR) Spectrometry and the fatty acid composition was determined with Gas chromatography mass spectrometry (GC/MS). The viscosity of the methyl ester and mineral oil were obtained to be 4.8 mPas and 9.8 mPas at 30°C. The pour point of methyl ester was obtained to be 1.4°C which could be enhanced by a pour point depressant when considering it for use in a low temperate region. The adequacy of this synthesized oil as an insulating oil was further explored by measuring the dielectric properties. The result revealed that methyl ester has a higher dielectric constant relative to mineral oil and a dielectric loss of 0.0045 at 30°C. The dielectric strength of the oil was analysed using two-parameter Weibull plots. The characteristic breakdown strength of mineral oil and yellow oleander methyl ester was obtained to be 21.9 kV and 23.3 kV respectively. The result obtained from this work is an indication that methyl ester from the non-edible vegetable oil is a promising alternative insulating oil for oil-lled transformer insulation.

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Section: F Dielectric Loss and Dielectric Permittivitymentioning

confidence: 99%

Physicochemical and Dielectric Study on Nigerian Thevetia Peruviana as a Potential Green Alternative Fluid for Transformer Cooling/Insulation

Oparanti

Salaudeen²,

Adekunle³

et al. 2022

Waste Biomass Valor

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“…Extensive work on soybean-based oil revealed that it releases more ethane than mineral oil, whereas the Dielectric Dissipation Factor (DDF) is normally higher for a vegetable oil than for a mineral oil [75]. Experimental work on rapeseed oil revealed that its dielectric strength is comparable to that of mineral oil [76], and that it can be used for power transformers, especially if improved through the use of an antioxidant [77].…”

Section: Possible Alternatives To Transformer Oimentioning

confidence: 99%

Alternative Fluids – with a Particular Emphasis on Vegetable Oils – as Replacements of Transformer Oil: A Concise Review

Danikas

Sarathi

2020

Eng. Technol. Appl. Sci. Res.

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For many decades transformer oil has served as a well-known insulating medium. Its electrical properties, among others, have been studied in length. In recent years, with the increasing concern for the environment, alternative insulating liquids have been proposed. In the context of this concise review, such alternative fluids are investigated. Some conflicting evidence regarding experimental results that still persist are discussed and aspects of vegetable oils in need of further work are pointed out.

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“…Meanwhile, the linear model developed to predict the values had a good correlation with the experimental data for the density, heat capacity and thermal conductivity. Katim et al [ 19 ] experimented with rapeseed oil (RO) as a potential replacement for mineral oil used in transformers. The researchers synthesized RO and measured the AC breakdown voltage, dissipation factor, and resistivity according to IEC 60156 and IEC 60247 standards and various temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Thermophysical Properties of Vegetable Oil-Based Hybrid Nanofluids Containing Al2O3-TiO2 Nanoparticles as Insulation Oil for Power Transformers

2022

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The massive demand in the electrical power sector has resulted in a large demand for reliable, cost efficient, and environmentally friendly insulation oil to reduce the dependency on mineral oil. The hybridization of nanoparticles in vegetable oil is a novel method to enhance the thermal properties of vegetable oil. This study focuses on the experimental investigation of the thermophysical properties of coconut oil, soybean oil, and palm oil-based hybrid nanofluids suspended with Al2O3-TiO2 nanoparticles at a mass concentration of 0.2, 0.4, and 0.6%. The ratio between Al2O3 and TiO2 nanoparticles was maintained constant at 50:50. The main purpose of the study is to evaluate the thermal conductivity, dynamic viscosity, and density of different vegetable base oils suspended with Al2O3-TiO2 in the temperature range of 30 to 60 °C. The influence of temperature on the augmentation of thermophysical properties for different vegetable oil-based hybrid nanofluids is investigated experimentally. The experimental results for thermal conductivity for the three types of base fluids show that the effect of nanoparticle mass concentration in thermal conductivity enhancement is less significant for temperatures more than 50 °C. The palm oil with a 0.6% Al2O3-TiO2 nanoparticle concentration exhibited the highest thermal conductivity with a 27.5% thermal conductivity enhancement relative to the base oil. The effect of nanofluid temperature on density and viscosity augmentation is more distinct compared with the impact of Al2O3-TiO2 nanoparticles concentrations. Among all three types of hybrid nanofluids, palm oil based nanofluids were found to have superior thermophysical properties compared with coconut oil and soybean oil, with the highest thermal conductivity of 0.628 W/m·k and lowest viscosity of 17.772 mPa·s.

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An investigation on rapeseed oil as potential insulating liquid

Cited by 8 publications

References 7 publications

Physicochemical and Dielectric Study on Nigerian Thevetia Peruviana as a Potential Green Alternative Fluid for Transformer Cooling/Insulation

Physicochemical and Dielectric Study on Nigerian Thevetia Peruviana as a Potential Green Alternative Fluid for Transformer Cooling/Insulation

Alternative Fluids – with a Particular Emphasis on Vegetable Oils – as Replacements of Transformer Oil: A Concise Review

Thermophysical Properties of Vegetable Oil-Based Hybrid Nanofluids Containing Al2O3-TiO2 Nanoparticles as Insulation Oil for Power Transformers

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