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Measurement of thermal properties of liquids with an AC heated-wire technique

An apparatus for the simultaneous absolute measurement of the thermal activity, thermal diffusivity, thermal conductivity, and heat capacity of nonconducting liquids with the AC heated-wire (strip) technique is described. The main advantage of this technique is that the temperature oscillations fiel... Full description

Main Author: Atalla, R.
Contributors: El-Sharkawy, A. | Author
Gasser, A. | Author
Contained in: International Journal of Thermophysics : Journal of Thermophysical Properties and Thermophysics and Its Applications New York, NY : Springer Science + Business Media B.V Vol. 2, No. 2 (1981), p. 155-162
Journal Title: International Journal of Thermophysics : Journal of Thermophysical Properties and Thermophysics and Its Applications
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Links: Volltext (dx.doi.org)
ISSN: 1572-9567
Additional Keywords: AC heated-wire technique
OriginalPaper
heat capacity
liquids
thermal conductivity
thermal diffusivity
DOI: 10.1007/BF00503938
Language: English
Physical Description: Online-Ressource
ID (e.g. DOI, URN): 10.1007/BF00503938
BF00503938
PPN (Catalogue-ID): SPR028444027
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Internes Format
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520 |a An apparatus for the simultaneous absolute measurement of the thermal activity, thermal diffusivity, thermal conductivity, and heat capacity of nonconducting liquids with the AC heated-wire (strip) technique is described. The main advantage of this technique is that the temperature oscillations field can be confined around the sensor in a liquid layer thin enough to suppress the hydrodynamic currents. This leads to the elimination of the convective heat transport. Carrying measurements at different frequencies, the inertia of the sensor can be considered, and the radiative heat transport can be estimated for liquids with known optical properties. The apparatus was constructed and tested using six different liquids in a limited temperature range. The thermal properties of these liquids at 20°C are reported. The thermal conductivity data of toluene and n-heptane (recommended as proposed thermal conductivity standards) are given in the temperature range 10–40°C. Good agreement was found with data reported by other investigators at 20°C, but there is still a considerable discrepancy in the temperature coefficient of thermal conductivity. 
653 |a OriginalPaper 
653 |a AC heated-wire technique 
653 |a heat capacity 
653 |a liquids 
653 |a thermal conductivity 
653 |a thermal diffusivity 
700 1 |a El-Sharkawy, A.  |e verfasserin  |4 aut 
700 1 |a Gasser, A.  |e verfasserin  |4 aut 
773 0 8 |i in  |t International Journal of Thermophysics : Journal of Thermophysical Properties and Thermophysics and Its Applications  |d New York, NY : Springer Science + Business Media B.V  |g Vol. 2, No. 2 (1981), p. 155-162  |q 2:2<155-162  |w (DE-601)SPR028443624  |x 1572-9567 
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