Passivity-based Proportional Integral Tuning Method for a Simple Heat Exchanger Network

Authors

  • Siwaporn Mahitthimahawong Center of Excellence on Petrochemical and Materials Technology; Center for Advanced Studies in Industrial Technology, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
  • Nitipat Chaiwattanapong Center of Excellence on Petrochemical and Materials Technology; Center for Advanced Studies in Industrial Technology, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
  • Tony Paterson School of Engineering and Advanced Technology, Massey University, Palmerston North, New Zealand.
  • Thongchai Srinophakun Center of Excellence on Petrochemical and Materials Technology; Center for Advanced Studies in Industrial Technology, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.

Keywords:

heat exchanger networks, passivity theorem, closed-loop stability, fault tolerance

Abstract

A more realistic heat exchanger model was developed by implementing a bypass control loop. Under the decentralized unconditional stability (DUS) condition, proportional integral (PI) tuning parameters were designed based on the passivity concept to maintain closed-loop stability. The controller’s performance was tested with a simple heat exchanger network (HEN) under various inlet flow rates of hot stream using an Aspen Dynamics simulator. The results indicated that the proposed controller can reject the disturbance and give faster and better setpoint tracking than conventional PI controllers based on the Ziegler-Nichols method. In addition, this proposed controller could handle the entire process at the target setpoint even with sluggishness in one control loop whereas the conventional controller could not operate properly and all responses were too slow.

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Published

2014-08-31

How to Cite

Mahitthimahawong, Siwaporn, Nitipat Chaiwattanapong, Tony Paterson, and Thongchai Srinophakun. 2014. “Passivity-Based Proportional Integral Tuning Method for a Simple Heat Exchanger Network”. Agriculture and Natural Resources 48 (4). Bangkok, Thailand:651-64. https://li01.tci-thaijo.org/index.php/anres/article/view/243392.

Issue

Vol. 48 No. 4 (2014): July-August

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.