Performance improvement in mobile air conditioning system using Al₂O₃/PAG nanolubricant

This paper presents the investigation of Al₂O₃/PAG nanolubricant performance for a compact vehicle mobile air conditioning (MAC) system. The Al₂O₃/PAG nanolubricant in this study is prepared by using two-step preparation method and stabilized using 4-Step UV–Vis Spectral Absorbency Analysis. An enhancement in the coefficient of performance (COP), reduction in compressor work, and enhancement in the cooling capacity of MAC employing Al₂O₃/PAG nanolubricant are recorded up to 31%, 26% and 32%, respectively, for 0.010% volume concentration. The current MAC performance is compared with MAC employing SiO₂/PAG nanolubricant from previous study. The comparison shows that the Al₂O₃/PAG nanolubricant has better performance in term of cooling capacity, compressor work, and COP at an average of 6%, 8%, and 33%, respectively. Therefore, the finding from this study suggests Al₂O₃/PAG nanolubricant with a volume concentration of 0.010% as an optimum and best performance nanolubricant for MAC systems.