Optimal control of variable-speed pumps of seawater-cooled chilling systems using BEMS

Shengwel Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review


An optimal control strategies for BEMS are developed to optimize the seawater pressure set-point of variable-speed seawater pumps, which include an adaptive approach and a derivative approach. Optimization is achieved by adjusting the pressure set-point according to the estimated derivative of the total power with respect to seawater pressure. The adaptive approach identifies the system parameters essential for the control strategies. Simulation tests show that significant saving in the overall energy consumption of the chilling system can be achieved by properly resetting the pressure set-paint only. The optimal control strategy and the evaluation of the control strategy are presented.
Original languageEnglish
Pages (from-to)29-35
Number of pages7
JournalHKIE Transactions Hong Kong Institution of Engineers
Issue number1
Publication statusPublished - 1 Jan 1999


  • Building Energy Management System
  • Chiller Plant
  • Energy Saving
  • Optimal Control
  • Seawater Cooling
  • Variable-Speed Pump

ASJC Scopus subject areas

  • Engineering(all)


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