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ISSN: 1949-0151 (Print)
ISSN: 1949-016x (Online)
Research Article Open Access

DYNAMIC MODELING AND GAIN SCHEDULING CONTROL OF A CHIILLED WATER COOLING SYSTEM

Jun Liu1 and M. Zaheeruddin1
  • 1 Concordia University, Canada

Abstract

A dynamic model of a Chilled Water (ChW) cooling system with a stratified ChW tank was developed. A PI-based Gain Scheduling (GS) control strategy was designed to improve thermal performance of the chiller system. Five different operation strategies were simulated and the energy consumption and cost of operating the system under full load and partial load conditions were compared. The results showed that the operating strategy with optimized chilled water set point saved 7.16% energy (21.5% cost) compared to the case with constant set point under full load conditions. These savings were more significant (8.5% energy and 36% cost) under partial load conditions.

Energy Research Journal
Volume 5 No. 1, 2014, 4-16

DOI: https://doi.org/10.3844/erjsp.2014.4.16

Submitted On: 17 June 2014 Published On: 15 October 2014

How to Cite: Liu, J. & Zaheeruddin, M. (2014). DYNAMIC MODELING AND GAIN SCHEDULING CONTROL OF A CHIILLED WATER COOLING SYSTEM. Energy Research Journal, 5(1), 4-16. https://doi.org/10.3844/erjsp.2014.4.16

Open AccessCopyright: © 2014 Jun Liu and M. Zaheeruddin. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Keywords

  • ChW Cooling System
  • ChW Tank
  • Gain-Scheduling Control
  • Near-Optimal Control