Application of TiO2 nanoparticles as a lubricant-additive for vapor compression refrigeration systems - An experimental investigation

被引：155

作者：

Sabareesh, R. Krishna ^{[1
]}

Gobinath, N. ^{[2
]}

Sajith, V. ^{[2
]}

Das, Sumitesh ^{[1
]}

Sobhan, C. B. ^{[2
]}

机构：

[1] TATA Steel Ltd, Div Res & Dev, Jamshedpur 831001, Bihar, India

[2] NIT Calicut, Sch Nano Sci & Technol, Calicut, Kerala, India

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2012年 / 35卷 / 07期

关键词：

Lubricant; Refrigeration; Nano particle; Nano fluid; TRIBOLOGICAL PROPERTIES; PERFORMANCE;

D O I：

10.1016/j.ijrefrig.2012.07.002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The coefficient of performance of a refrigeration system can be improved if a reduction in the work of compression can be achieved by a suitable technique, for a specified heat removal rate. The present study investigates the effect of dispersing a low concentration of TiO2 nanoparticles in the mineral oil based lubricant, on its viscosity and lubrication characteristics, as well as on the overall performance of a Vapor Compression Refrigeration System using R12 (Dichlorodifluoromethane) as the working fluid. An enhancement in the COP of the refrigeration system has been observed and the existence of an optimum volume fraction noticed, with low concentrations of nanoparticles suspended in the mineral oil. The physics involved in the interaction of nanoparticles with the base fluid has been further elucidated by estimating the Optical Roughness Index using a Speckle Interferometer, by performing measurements on the pin surface following tests with a Pin-on-Disk tester. (C) 2012 Elsevier Ltd and IIR. All rights reserved.

引用

页码：1989 / 1996

页数：8

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