Thermophysical Performances of Al2O3-water Nanofluids and its Heat Transfer Enhancement in Heat Pipe

摘要：

Al2O3-water nanofluids with volume concentration of 0.1％~0.5％ were prepared by a two-step method, the thermophysical parameters such as thermal conductivity, viscosity and surface tension were measured, The results showed that the thermal conductivity of Al2O3-water nanofluids increased with increasing temperature and volume concentration, while the viscosity decreased with increasing temperature but increased with increasing volume concentration, in contrast to the thermal conductivity, the surface tension significantly decreased with increasing temperature and volume concentration. Furthermore, Al2O3-water nanofluids with 0.5％ volume concentration were added into heat pipe. The experimental measurements showed that the Al2O3-water nanofluids have improved the heat transfer performance of heat pipe and the heat transfer coefficient of the heat pipe with Al2O3-water nanofluids enhanced by 85.7％ when compared with the heat pipe with deionized water.

关键词： Al2O3-water nanofluids Thermal conductivity Viscosity Surface tension Heat pipe

作者: Dongdong LI Weilin ZHAO Jinkai LI Yanxiang GUAN Zongming LIU

作者单位: University of Jinan, School of Materials Science and Engineering, Jinan 250022, China

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 339-343

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）