Thermal Transpiration

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Thermal Transpiration

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The passage of gas through a connection between two vessels at different temperatures resulting in a pressure gradient when equilibrium is reached. Under conditions of molecular flow the equilibrium

condition is expressed by Missing Image:img src="SP7_t_files/thermtrans.html"

where p_a and T_a are the pressure and absolute temperature, respectively, in one vessel and p_b and T_b are the pressure and absolute temperature, respectively, in the other. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use