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

Nugroho, Afid; Mamat, Rizalman; Zhang, Bo; Azmi, W.H.; Yusaf, Talal; Ghazali, Mohd Imran; Khoerunnisa, Fitri

doi:10.1007/978-981-19-4425-3_15

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…In the third stage, ultrasonic treatment is applied to the nanolubricant for 100 min to enhance its stability and prevent agglomeration. Ultrasonication treatment was conducted in three cycles of 40-40-20 min for each sample, with a 15-min pause in between to prevent a significant temperature increase in the nanolubricant and ensure compliance with device safety standards [ 30 ]. An ultrasonic homogenizer with a probe was chosen for its ability to provide stronger vibrations to the suspension, resulting in better dispersion compared to using an ultrasonic bath, as reported by Mellado et al [ 31 ].…”

Section: Methodsmentioning

confidence: 99%

Performance enhancement and optimization of residential air conditioning system in response to the novel FAl2O3-POE nanolubricant adoption

Nugroho,

Mamat,

Xiaoxia

et al. 2023

Heliyon

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Section: Methodsmentioning

confidence: 99%

Performance enhancement and optimization of residential air conditioning system in response to the novel FAl2O3-POE nanolubricant adoption

Nugroho,

Mamat,

Xiaoxia

et al. 2023

Heliyon

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“…As an initial stage, Al2O3 nanoparticles were dispersed into PAG ND12 using the two-step method. This method has become familiar to researchers [23][24][25]. In addition, by applying this method, the test results on nanolubricants samples recorded better stabilisation.…”

Section: Introductionmentioning

confidence: 99%

Tribology Evaluation on a Four-Ball Tribometer Lubricated by Al2O3/PAG Nanolubricants

Safril,

W.H. Azmi,

Sharif

et al. 2024

Int. J. Automot. Mech. Eng.

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Nanolubricants can improve the tribological properties for application in automotive systems. By reducing the friction rate of the internal components with nanolubricants, the service life of a compressor used in automotive air conditioning (AAC) can be extended. The investigation aims to determine the optimal volume concentration of nanolubricants for achieving the highest performance in tribological properties. Al2O3 nanoparticles dispersed in a polyalkylene glycol (PAG ND12) base at volume concentrations of 0.01%, 0.03%, and 0.05% were investigated to improve the lubrication system in the AAC compressor. The stability investigations were carried out by comparing absorbance conditions using a UV-Vis Spectrophotometer at each volume concentration for 210 days. Koehler's four-ball tribometer was used to measure coefficient of friction (COF) and friction torque at a load of 40.0 kg and a speed of 1200 rpm. The stability study of nanolubricant yielded average absorbance values of 0.752, 0.755, and 0.684, respectively. The average COF values of the nanolubricants of 0.01%, 0.03%, and 0.05% were 0.104, 0.078, and 0.117, while the pure lubricant was 0.095. Further investigation on friction torque resulted in a decrease in the pure lubricant of 0.064%, and for nanolubricant Al2O3/PAG ND12, a decrease of 0.087%, 0.057%, and 0.092%, respectively. The results indicated that a concentration of 0.03% produced the greatest reduction in COF and torque, namely 0.0078% and 0.0578%, correspondingly. Therefore, it is recommended to use Al2O3/PAG ND12 nanolubricant at a volume concentration of 0.03% because it is the most optimal in terms of stability and has the highest COF and frictional torque reduction.

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

Cited by 2 publications

References 34 publications

Performance enhancement and optimization of residential air conditioning system in response to the novel FAl2O3-POE nanolubricant adoption

Performance enhancement and optimization of residential air conditioning system in response to the novel FAl2O3-POE nanolubricant adoption

Tribology Evaluation on a Four-Ball Tribometer Lubricated by Al2O3/PAG Nanolubricants

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