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Automated retrofit design of cooling‐water systems
Author(s) -
Kim JinKuk,
Smith Robin
Publication year - 2003
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690490711
Subject(s) - cooling tower , water cooling , heat exchanger , reuse , initialization , pressure drop , process engineering , mechanical engineering , computer science , engineering , waste management , mechanics , physics , programming language
An automated approach from the systematic investigation of interactions between cooling‐tower performance and the cooling‐water network design was developed for retrofit design of cooling‐water systems. Introducing reuse of cooling water between different cooling duties enables cooling systems to be debottlenecked. The series arrangement of heat exchangers, however, results in a pressure drop increase because of the cooling water reuse. An optimization model for cooling‐water networks developed considers pressure‐drop constraints, complexity of networks, and efficient use of the cooling tower. A new node‐superstructure model is suggested to consider the intensive property of pressure and the sequence of connections simultaneously. Physical insights are used to provide a good initialization for the resulting optimization problem. Issues of retrofit analysis are also addressed to give design guidelines for debottlenecking of cooling‐water systems.