Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/121749
Title: HEAT EXCHANGER NETWORK RETROFITTING
Authors: SREEPATHI BHARGAVA KRISHNA
Keywords: Heat Exchanger Network Retrofitting, Optimization, Retrofitting levels, Variable heat capacity, multi-way split, exchanger reassignment strategy
Issue Date: 5-Aug-2015
Citation: SREEPATHI BHARGAVA KRISHNA (2015-08-05). HEAT EXCHANGER NETWORK RETROFITTING. ScholarBank@NUS Repository.
Abstract: Heat exchanger networks (HEN) are employed in process industries to decrease external utilities consumption and for economic and environmental sustainability. Retrofitting existing HEN can achieve significant energy savings for a relatively small investment. It is useful for numerous plants designed in the past and operating currently. Mathematical programming methods are increasingly used to solve HEN retrofitting problems. Of these, stochastic global optimization (SGO) methods such as genetic algorithms and differential evolution are gaining popularity. These methods have been applied to HEN retrofitting problems having constant heat capacity and/or for single objective optimization. This study considers variable heat capacity and multi-objective optimization (MOO) as well as different levels of HEN retrofitting. The objectives used in MOO can be investment cost, utility cost, total annualized cost, number of reassignments and number of heat transfer enhancements.
URI: http://scholarbank.nus.edu.sg/handle/10635/121749
Appears in Collections:Ph.D Theses (Open)

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