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Thermal Diffusion Ratio

Applicable units are those of quantitykind:ThermalDiffusionRatio

The "Thermal Diffusion Ratio" is proportional to the product of the component concentrations.

http://www.thermopedia.com/content/1189/

http://www.iso.org/iso/catalogue_detail?csnumber=31894

In a steady state of a binary mixture in which thermal diffusion occurs, $grad x_B = -(\frac{k_T}{T}) grad T$, where $x_B$ is the amount-of-substance fraction of the heavier substance $B$, and $T$ is the local thermodynamic temperature.

The "Thermal Diffusion Ratio" is proportional to the product of the component concentrations.

k_T