Accurate measurement of thermal conductivity of micro-quantity liquids by dielectric transient current method

被引:3
作者
Chen, Shijie [1 ]
Zheng, Feihu [1 ]
Li, Jiachen [1 ]
机构
[1] Tongji Univ, Coll Elect & Informat Engn, Shanghai 201804, Peoples R China
基金
上海市自然科学基金; 中国国家自然科学基金;
关键词
Thermal conductivity; Micro-quantity liquid; Thermal pulse method; Dielectric transient current method; HEAT-TRANSFER; ENHANCEMENT; NANOFLUID; WATER; VISCOSITY; AL2O3; STABILITY;
D O I
10.1016/j.applthermaleng.2023.120830
中图分类号
O414.1 [热力学];
学科分类号
摘要
The thermal conductivity of liquids is of a great significant parameter for engineering applications that require the use of liquids to enhance heat transfer. Although a number of experimental methods for measuring thermal conductivity of liquids have been reported, many of these methods have limitations in principle or accuracy for small amounts of liquids, particularly for some nanofluids with low thermal conductivity or high electrical conductivity. This paper presents a novel method for measuring thermal conductivity of micro-quantity liquid based on the modified thermal pulse method. The main principle of the measurement is based on fitting the changing characteristics of the thermal response current of a thin dielectric film thermally coupled to the tested liquid. The paper analyses the factors affecting the measurement range and accuracy of the technique through numerical simulations and experiments. The feasibilities and uncertainties of the proposed technique are discussed in relation to six typical samples including pure water, insulating oil and conductive nanofluids. The experimental results show that the method for testing the thermal conductivity of liquids has the advantages of low measuring time down to 10 ms, low fluid usage down to 60 nL, wide measurement range from 0.01 to 10 W/(m center dot K), good sample compatibility and high accuracy. It should be noted that the method is highly dependent on the thermal conductivity and thickness of the dielectric film, which limits the measurement range of the method.
引用
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页数:13
相关论文
共 54 条
[1]   Thermo-electro-rheological behaviour of vanadium electrolyte-based electrochemical graphene oxide nanofluid designed for redox flow battery [J].
Aberoumand, Sadegh ;
Woodfield, Peter ;
Shi, Ge ;
Nguyen, Tuan Kien ;
Nguyen, Hong-Quan ;
Li, Qin ;
Shabani, Bahman ;
Dzung Viet Dao .
JOURNAL OF MOLECULAR LIQUIDS, 2021, 338
[2]   Tungsten (III) oxide (WO3) - Silver/transformer oil hybrid nanofluid: Preparation, stability, thermal conductivity and dielectric strength [J].
Aberoumand, Sadegh ;
Jafarimoghaddam, Amin .
ALEXANDRIA ENGINEERING JOURNAL, 2018, 57 (01) :169-174
[3]   Experimental study on synthesis, stability, thermal conductivity and viscosity of Cu-engine oil nanofluid [J].
Aberoumand, Sadegh ;
Jafarimoghaddam, Amin .
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 2017, 71 :315-322
[4]   Experimental study on the rheological behavior of silver-heat transfer oil nanofluid and suggesting two empirical based correlations for thermal conductivity and viscosity of oil based nanofluids [J].
Aberoumand, Sadegh ;
Jafarimoghaddam, Amin ;
Moravej, Mojtaba ;
Aberoumand, Hossein ;
Javaherdeh, Kourosh .
APPLIED THERMAL ENGINEERING, 2016, 101 :362-372
[5]   Recent Progress and Challenges in Transformer Oil Nanofluid Development: A Review on Thermal and Electrical Properties [J].
Amin, Danial ;
Walvekar, Rashmi ;
Khalid, Mohammad ;
Vaka, Mahesh ;
Mubarak, Nabisab Mujawar ;
Gupta, T. C. S. M. .
IEEE ACCESS, 2019, 7 :151422-151438
[6]  
[Anonymous], D27171995 ASTM
[7]   Diversity in thermal conductivity of aqueous Al2O3- and Ag-nanofluids measured by transient hot-wire and laser flash methods [J].
Aparna, Z. ;
Michael, M. M. ;
Pabi, S. K. ;
Ghosh, S. .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2018, 94 :231-245
[8]   Low cost and new design of transient hot-wire technique for the thermal conductivity measurement of fluids [J].
Azarfar, Sh. ;
Movahedirad, S. ;
Sarbanha, A. A. ;
Norouzbeigi, R. ;
Beigzadeh, B. .
APPLIED THERMAL ENGINEERING, 2016, 105 :142-150
[9]   Reversible thermal interfaces based on microscale dielectric liquid layers [J].
Cha, Gilhwan ;
Ju, Y. Sungtaek .
APPLIED PHYSICS LETTERS, 2009, 94 (21)
[10]   Interface thermal resistance of micron-thin film [J].
Chen, Shijie ;
Zheng, Feihu ;
Wei, Qian ;
Li, Jiachen ;
Zhang, Yewen .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2023, 208