Investigation of thermal conductivity and viscosity of Al2O3/PAG nanolubricant for application in automotive air conditioning system

被引：84

作者：

Sharif, M. Z. ^{[1
]}

Azmi, W. H. ^{[1
,2
]}

Redhwan, A. A. M. ^{[1
,3
]}

Mamat, R. ^{[1
,2
]}

机构：

[1] Univ Malaysia Pahang, Fac Mech Engn, Pekan 26600, Pahang, Malaysia

[2] Univ Malaysia Pahang, Automot Engn Ctr, Pekan 26600, Pahang, Malaysia

[3] TATI Univ Coll, Fac Mfg Engn Technol, Kemaman 24000, Terengganu, Malaysia

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2016年 / 70卷

关键词：

Nanolubricants; Thermal conductivity; Viscosity; Air conditioning system; HEAT-TRANSFER CHARACTERISTICS; ETHYLENE-GLYCOL; CARBON NANOTUBES; NANOPARTICLES; PERFORMANCE; REFRIGERANT; ENHANCEMENT; NANOFLUIDS; MODEL; OIL;

D O I：

10.1016/j.ijrefrig.2016.06.025

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, thermal conductivity and viscosity of the Al2O3/polyalkylene glycol (PAG) 46 nanolubricants for 0.05 to 1.0% volume concentrations at temperatures of 303.15 to 353.15 K have been investigated. Al2O3 nanoparticles were dispersed in the PAG lubricant by a two step preparation. The measurement of thermal conductivity and viscosity was performed using KD2 Pro Thermal Properties Analyzer and LVDV-III Rheometer, respectively. The results showed that the thermal conductivity of the nanolubricants increased by concentration, but decreased by temperature. Besides, the viscosity of the nanolubricants sharply increased for concentrations higher than 0.3%. However, this parameter diminished by temperature. The highest thermal conductivity and viscosity ratio were observed to be 1.04 and 7.58 times greater than the PAG lubricant for 1.0% and 0.4% concentrations, respectively. As a conclusion, it was recommended to use the Al2O3/PAG nanolubricants with concentration of less than 0.3% for application in automotive air conditioning system. (C) 2016 Elsevier Ltd and IIR. All rights reserved.

引用

页码：93 / 102

页数：10

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