Four-pass tube bundle

It is possible to convert the two-pass tube bundle shown in Fig. 19,1 to the four-pass tube bundle shown in Fig. 19.6. This conversion is effected as follows ... 

The resulting four-pass tube bundle will have a tube-side velocity twice as high as it did when it was a two-pass exchanger 3 ft/s. Experience has shown that in many services, doubling this velocity may reduce fouling rates by an order of magnitude. That is fine. But what about pressure drop ... 

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See also in sourсe #XX -- [ ]

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