Premium
Control structure design for optimal operation of heat exchanger networks
Author(s) -
Lersbamrungsuk Veerayut,
Srinophakun Thongchai,
Narasimhan Sridharakumar,
Skogestad Sigurd
Publication year - 2008
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.11366
Subject(s) - heat exchanger , control (management) , control theory (sociology) , scheme (mathematics) , range (aeronautics) , constraint (computer aided design) , simple (philosophy) , optimal control , mathematical optimization , computer science , integer programming , work (physics) , integer (computer science) , dynamic programming , tracking (education) , control engineering , mathematics , engineering , mechanical engineering , mathematical analysis , philosophy , epistemology , artificial intelligence , programming language , aerospace engineering , psychology , pedagogy
When only single bypasses and utility duties are used as manipulations, optimal operation of heat exchanger networks (HENs) can be categorized as an active constraint control problem. This work suggests a simple split‐range control scheme to implement the optimal operation. For a given HEN and information about the disturbances, the corresponding control structure can be found by solving an integer‐linear programming (ILP) problem with two objective functions providing optimal split‐range pairs (for tracking active constraints during the operation) and appropriate control pairings (for fast control action). A HEN case study is used to demonstrate the application of the proposed design technique. Dynamic simulation shows the ability to provide the optimal operation of the obtained control structure. © 2007 American Institute of Chemical Engineers AIChE J, 2008