Abstract
In this experimental study, experiments were carried out using a nano-lubricant consisting of polyol ester (POE)—titanium dioxide (TiO2)—surfactant instead of POE oil used in the compressor in a refrigeration system cycle test apparatus. The main aim of the study was to provide more efficient operation of the refrigeration system. Triton X100 (TX-100) and sorbitan polyoxyethylene monooleate (Tween 80) were used as the surface-active material. Nano-lubricants were formed by mixing TiO2 nanoparticles with POE oil at different concentrations. At these different nanoparticle concentrations, 0.5% of the surfactant was used. The reason for using a surfactant in the nano-lubricant was to prevent agglomeration in the mixture. TX-100 and Tween 80 surfactants were also used to study the effects of the surfactant on the nano-lubricant. Experiments were carried out using three different concentrations and three measurements for each concentration using the POE/TiO2/surfactant nano-lubricants. The best improvement was achieved when a nano-lubricant consisting of a mixture of TX-100 and POE oil with a concentration of 1.5% TiO2 was used. The improvement in coefficient of performance (COP) for the refrigeration cycle was 39.42%.
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Funding
The authors received support for nanoparticle analysis from the scientific and technological Studies Application and research center (KMU-Biltem-Karaman/Turkey). Part of this study is part of the PhD Thesis of Mustafa Akkaya.
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Akkaya, M., Menlik, T., Sözen, A. et al. The Effects of Triton X-100 and Tween 80 Surfactants on the Thermal Performance of a Nano-Lubricant: An Experimental Study. Int. J. of Precis. Eng. and Manuf.-Green Tech. 8, 955–967 (2021). https://doi.org/10.1007/s40684-020-00280-w
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DOI: https://doi.org/10.1007/s40684-020-00280-w