Targeting Minimum Cooling Water Flowrate

As noted previously, the performance of a cooling tower is maximized by maximizing the inlet temperature to 

The flowrate targets discussed here have been directed to minimizing the flowrate. In addition to temperature constraints, pressure drop constraints might also constrain the flowrate by constraining whether heat exchangers can be placed in series or not. Inclusion of pressure drop constraints is much more complex and outside the scope of the current text3. 

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To achieve the minimum cooling water flowrate target in design requires that the problem is decomposed into design regions, as illustrated in Figure 24.8. This shows... 

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