Abstract
We have investigated heat and mass transport phenomena in artificial air near the critical point to obtain a technical expertise in efficient recovering of the cold energy from liquefied natural gas or liquid hydrogen by using air. The soret effect in artificial air, which was nitrogen-oxygen binary mixture with the composition of 79.1mol% of nitrogen and 20.9mol% of oxygen, was investigated by using a single stage two-chamber cell. We obtained the thermal diffusion ratio from a series of experiments and confirmed that it assigned negative near the critical point.
