Active constraint strategy resilience analysis

The nonlinear resilience tests developed by Saboo et al. (1987a,b) are each for a rather specific case. A more general resilience analysis technique based on the active constraint strategy of Grossmann and Floudas (1985,1987) is also presented. The active constraint strategy can be used to test the resilience of a HEN with minimum or more units, with or without stream splits or bypasses, and with temperature and/or flow rate uncertainties (Floudas and Grossmann, 1987b). 

Active Constraint Strategy for Nonlinear Resilience Analysis... 

In addition, the active constraint strategy can save significant computational time in linear resilience analysis (86% in one example Grossmann and Floudas, 1987) by eliminating the need to check HEN feasibility at every corner point. Thus, this strategy makes it practical to analyze the resilience of HENs with a large number of streams. 

Several powerful HEN resilience analysis algorithms have been reviewed in this chapter, including the active constraint strategy (Grossmann and Floudas, 1985, 1987) which can test the resilience of the most general HEN. However, many common industrial HENs still cannot be analyzed with present techniques. For example, no technique has been... 

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