An analysis was made of two types of gaseous diffusion separating unit. One type was such that the flows of unpermeated and permeated gas were rod-like and parallel with each other, and the other was such that the flows were of counter-current.The analysis was a numerical calculation, and the characteristics of separating unit, that is, gas composition, gas flow rate, separation factor and separative power were found. Discussions were made about the comparison of the characteristics of several types of separating unit, and it was concluded that the counter-flow type showed the most excellent performance of separation, the both sides mixing type had the worst and the other type were among the two.
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Oishi et al. (1961) studied this question.