Heat transfer intensified techniques for retrofitting heat exchanger networks in practical implementation

This paper addresses the implementation of heat transfer intensified techniques in practical heat exchanger networks (HENs). The issues considered in this paper not previously addressed include heat transfer intensification, changes in multiple tube passes and shell passes and temperature dependence of stream heat capacity (CP). These must be formulated into a new complex nonlinear model not reported previously in the existing literature. To solve such retrofit problems, an MILP-based iterative method has developed based on the work proposed by Pan et al. (2012a). A large scale example is presented to demonstrate the validity and efficiency of the proposed approach. Copyright © 2013, AIDIC Servizi S.r.l.