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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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12.5 Efficiencies

Usually the best way to determine efficiencies is to measure them on commercial-scale equipment. In the absence of such data a rough prediction of the overall efficiency E0 can be obtained from O’Connell’s correlation shown in Figure 12-8 (O’Connell, 1946). Although originally done for bubble-cap systems, the results can be used for a first estimate for sieve and valve trays. The data in Figure 12-6 are fit by (Kessler and Wankat, 1988)

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Figure 12-8. O’Connell’s correlation for overall efficiency of bubble-cap absorbers, reprinted from O’Connell, Trans. AIChE, 42, 741 (1946), copyright 1946, AIChE

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