Van Winkles correlation

Van Winkle et al. (1972) have published an empirical correlation for the plate efficiency which can be used to predict plate efficiencies for binary systems. Their correlation uses dimensionless groups that include those system variables and plate parameters that are known to affect plate efficiency. They give two equations, the simplest, and that which they consider the most accurate, is given below. The data used to derive the correlation covered both bubble-cap and sieve plates. 

This method of predicting plate efficiency, published in 1958, was the result of a five-year study of bubble-cap plate efficiency directed by the Research Committee of the American Institute of Chemical Engineers. 

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The MacFarland, Sigmund, and Van Winkle correlation (1S3). Another empirical efficiency correlation often mentioned in the literature (12,131,152), it expresses efficiency in terms of dimensionless groups. It is based on binary data for sieve and bubble-cap trays. 

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