Synthesis and Retrofit Design of Operable Heat Exchanger Networks. 1. Flexibility and Structural Controllability Aspects
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A systematic framework for the synthesis and/or retrofit of flexible and structurally controllable heat exchanger networks is presented in this paper. Based on a multiperiod hyperstructure network representation, explicit structural controllability (total disturbance rejection) criteria are developed and included within a synthesis/retrofit mixed-integer nonlinear programming model, where a total annualized (operating and investment) cost is minimized. The proposed framework results in a network structure which features minimum annualized cost, while being (i) flexible to operate within a specified range (or discrete set) of uncertain stream flow rates, inlet temperatures, and/or heat transfer coefficients and (ii) structurally controllable for a given set of disturbances and control variables. © 1994, American Chemical Society. All rights reserved.
author list (cited authors)
Papalexandri, K. P., & Pistikopoulos, E. N.