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

中文翻译：

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Triton X-100和Tween 80表面活性剂对纳米润滑剂热性能的影响：实验研究

摘要

在本实验研究中，使用由多元醇酯（POE）-二氧化钛（TiO ₂）-表面活性剂组成的纳米润滑剂代替制冷系统循环测试设备中压缩机中使用的POE油进行了实验。研究的主要目的是使制冷系统更有效地运行。Triton X100（TX-100）和脱水山梨醇聚氧乙烯单油酸酯（Tween 80）被用作表面活性材料。通过混合TiO ₂形成纳米润滑剂具有不同浓度POE油的纳米颗粒。在这些不同的纳米颗粒浓度下，使用0.5％的表面活性剂。在纳米润滑剂中使用表面活性剂的原因是为了防止混合物中的附聚。还使用TX-100和Tween 80表面活性剂来研究表面活性剂对纳米润滑剂的影响。使用三种不同的浓度进行实验，并使用POE / TiO ₂ /表面活性剂纳米润滑剂对每种浓度进行三种测量。当使用由TX-100和POE油的混合物组成的纳米润滑剂，其中TiO ₂的浓度为1.5％时，可以实现最佳的改进。制冷循环的性能系数（COP）改进为39.42％。

图形摘要