The Effects of Triton X-100 and Tween 80 Surfactants on the Thermal Performance of a Nano-Lubricant: An Experimental Stu
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The Effects of Triton X‑100 and Tween 80 Surfactants on the Thermal Performance of a Nano‑Lubricant: An Experimental Study Mustafa Akkaya1 · Tayfun Menlik2 · Adnan Sözen2 · Metin Gürü3 Received: 17 August 2020 / Revised: 8 October 2020 / Accepted: 13 October 2020 © Korean Society for Precision Engineering 2020
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%. Graphic Abstract
Keywords TX-100 · Tween 80 · Compressor capacity · Thermal conductivity · Energy saving * Mustafa Akkaya [email protected] Extended author information available on the last page of the article Vol.:(0123456789) 13
International Journal of Precision Engineering and Manufacturing-Green Technology
1 Introduction Refrigeration systems are frequently used in all areas of the industry. When industrial systems are considered, efficiency studies that can be conducted in refrigeration systems are extremely important. Refrigerant gases are used as the working fluid of refrigeration systems. In order to make the refrigeration system work more efficiently, the refrigerant in the system or the working oil in the compressor may be intervened with. In recent years, the thermophysical properties of nanoparticles have been utilised in working fluids. Nanoparticles are mixed into the refrigerant in refrigeration systems, and nano refrigerant are obtained [1, 2]. When nano-lubricants are formed with nanoparticles, the newly formed suspension will increase the thermal properties of the compressor oil. Interactions and collisions between nanoparticles will increase the flow contact surface. As a result of the increased flow contact surface, higher thermal conductivity and heat transfer in the nano-lubricant will be achieved. The first important point when nano-lubricants are formed with nanoparticles is the use of nanopart
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