Precise measurement of thermal conductivity of liquid over a wide temperature range using a transient hot-wire technique by uncertainty analysis

2012 ◽  
Vol 542 ◽  
pp. 18-23 ◽  
Author(s):  
Su Yong Kwon ◽  
Sanghyun Lee
Keyword(s):  
Thermal Conductivity ◽  
Uncertainty Analysis ◽  
Wide Temperature Range ◽  
Precise Measurement ◽  
Transient Hot Wire ◽  
Hot Wire ◽  
Temperature Range ◽  
Transient Hot Wire Technique

Thermal Conductivity of Complex Hydrocarbon Systems at Pressures Up To 1000 MPa

2016 ◽  
Vol 138 (11) ◽  
Author(s):  
Vladimir Kutcherov ◽  
Alexey Chernoutsan ◽  
Anton Kolesnikov ◽  
Boris Grigoriev
Keyword(s):  
Thermal Conductivity ◽  
Crude Oil ◽  
Temperature Coefficient ◽  
Atmospheric Pressure ◽  
Pressure Range ◽  
Gas Condensate ◽  
Transient Hot Wire ◽  
Hot Wire ◽  
Coefficient Of Thermal Conductivity ◽  
Transient Hot Wire Technique

The thermal conductivity of five samples of crude oil and one sample of gas condensate was measured by the transient hot-wire technique. The measurements were made along isotherms (245, 250, 273, 295, 320, 336, and 373 K) in the pressure range from atmospheric pressure up to 1000 MPa and along isobars (at 0.1, 100, 200, 300, 400, 500, and 1000 MPa) in the temperature range 245–450 K. It was observed that the thermal conductivity of the samples investigated strongly depends on the pressure and rises with increasing pressure for all the temperatures. At a certain pressure, the temperature coefficient of thermal conductivity reverses from negative to positive. The pressure at which this reversal was observed varied in the range of 300–380 MPa.

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