In the previous papers
10)11) it was shown that liquid-side mass-transfer coefficients in a tower packed with Raschig rings were reasonably correlated as expressed by Eqs. (1), (2) and (3).
In this paper:
1) Taking the surface area of a Berl saddle to be a hyperbolic paraboloid based on Max Leva's idea
6), the wetted surface areas of Berl saddles (nominal dia.: 13mm and 50mm) were determined by a method similar to that employed by Mayo
8) or Fujita
1). The results are shown in Fig. 3, from which was derived Eq. (6) for the wetted surface areas of 13mm Berl saddles, Eq. (7) for those of 50mm Berl saddles and Eq. (10) for their mean.
2) Absorption of pure CO
2 into city water was investigated, using a 10cm-dia. tower packed with 25mm Berl saddles. The results are shown in Fig. 4.
3) Liquid-side mass-transfer coefficients calculated from the data of Sherwood-Holloway
12), Molstad et al.
9), Fujita et al.
2), Hikita et al.
3), and the authors, by using Eq. (10) were reasonably correlated as shown in Fig. 5. The average line in Fig. 5 is expressed by Eq. (12), which is identical with Eq. (3) but for their constants.
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