Erratum: Determination of the Eucken Factor from Relative Change in Thermal Conductivity of Gas Mixtures. Ortho–Para‐hydrogen Mixtures at 77°K

1969 ◽  
Vol 50 (4) ◽  
pp. 1909-1909
Author(s):  
Lee B. Harris
Keyword(s):  
Thermal Conductivity ◽  
Gas Mixtures ◽  
Para Hydrogen ◽  
Hydrogen Mixtures ◽  
Relative Change

Theoretical and experimental behaviour of a thermal conductivity detecter for the determination of the ortho/para hydrogen composition of gas mixtures in the temperature-jump region

1978 ◽  
Vol 56 (13) ◽  
pp. 1817-1826 ◽  
Author(s):  
David N. Mitchell ◽  
Donald J. Le Roy
Keyword(s):  
Thermal Conductivity ◽  
Temperature Jump ◽  
Accommodation Coefficient ◽  
Additional Parameter ◽  
Pure Hydrogen ◽  
Para Hydrogen ◽  
Temperature Jumps ◽  
Differential Behaviour ◽  
Two Parameters

The theoretical characteristics of a thermistor type thermal conductivity detector were determined for gases in the range 1 to 30 Torr, and were tested experimentally for mixtures of ortho- and para-hydrogen in pure hydrogen and in dilute mixtures of hydrogen in helium. It was found that the detector could be treated as being spherically symmetric. For temperature-jumps of up to 100 K, the total heat transfer could be adequately explained by a simplified form of the Kennard temperature-jump theory, only two parameters being required, the radius of the thermistor and its accommodation coefficient. The differential behaviour, the sensitivity to changes in ortho/para composition, required an additional parameter, the apparent gas phase relaxation rate for rotational energy.

HOT WIRE METHOD FOR DETERMINATION OF THE THERMAL CONDUCTIVITY OF SUGAR CANE FIBERS

2020 ◽  
Author(s):  
Marcelo Borges dos Santos ◽  
CLAUDIA BITTENCOURT ◽  
Ana Carolina Mendonça Mansur ◽  
Luís Mauro Moura ◽  
Carlos Augusto Castro Ferreira
Keyword(s):  
Thermal Conductivity ◽  
Sugar Cane ◽  
Hot Wire ◽  
Wire Method
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