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Energy saving in automotive air conditioning system performance using SiO2/PAG nanolubricants

M. Z., Sharif and Azmi, W. H. and A. A. M., Redhwan and R., Mamat and Najafi, G. (2019) Energy saving in automotive air conditioning system performance using SiO2/PAG nanolubricants. Journal of Thermal Analysis and Calorimetry, 135 (2). pp. 1285-1297. ISSN 1388-6150 (print); 1588-2926 (online)

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The use of automotive air conditioning (AAC) nowadays is essential because of the hot climate and global warming. The AAC increases the overall fuel consumption in order to cool down the car cabin, hence releases more CO2 into the atmosphere. Nanotechnology can be implemented into the lubricant of the AAC compressor which can aid in reducing the power consumption. Therefore, this paper investigates the effect of SiO2/PAG nanolubricants on the AAC performance and energy saving. The SiO2/PAG nanolubricants were prepared using the two-step method. The sedimentation observation and UV–Vis spectrophotometer evaluation confirmed the stability of the nanolubricants. The tribology analysis revealed the coefficient of friction of SiO2/PAG nanolubricants better than the original PAG lubricants. The performance parameters and power consumption (energy saving) of AAC system using SiO2/PAG nanolubricants were compared with PAG lubricants. The condenser pressure and the pressure ratio of the AAC system decreased by an average of 10.8% and 5.6%, respectively. The volumetric heat absorb increased up to 3% and the coefficient of performance increased by an average of 21%. The compressor work and power consumption of the AAC system reduced by 16.5% and 4%, respectively. As a conclusion, it was recommended to use 0.05% volume concentration of SiO2/PAG nanolubricants in AAC compressor for optimum system performance and energy saving.

Item Type: Article
Additional Information: Indexed by SCOPUS
Uncontrolled Keywords: Nanolubricants; Energy saving; Air conditioning; Heat absorb; Compressor work; Coefficient of performance
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Institute of Postgraduate Studies
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 20 Mar 2019 01:26
Last Modified: 30 Oct 2019 04:17
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