自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 8    August 2019

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Effects of TiO2 nanoparticles on thermal conductivity of heat transfer oil
YIN Xiang(尹湘), KOU Guang-xiao(寇广孝), XU Ai-xiang(徐爱祥), FU Tao(符涛), ZHU Jie(朱杰)

College of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China

Abstract:There is a lack of thermophysical data of heat transfer oil and nano-oil in the high temperature range of 50-300 °C for designing and developing heat transfer oil furnace and its heating systems. In the present study, the thermal conductivity values of heat transfer oil and TiO2 nano-oil in the above high temperature range were measured by a newly developed high-temperature thermal conductivity meter. Based on the principle of least square method, the thermal conductivity values obtained from experiments were fitted separately, and the correlation between thermal conductivity and temperature of heat transfer oil and TiO2 nano-oil was obtained. The results show that the thermal conductivity and the increased percentage of thermal conductivity of TiO2 nano-oil are proportional to the increase of particle size and mass fraction of nanoparticles, but thermal conductivity is in reverse proportion to the increase of temperature and the increased percentage of thermal conductivity is less affected by temperature.

 

Key words: TiO2 nano-oil; thermal conductivity; nanoparticle

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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