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Dynamics and control of a chilled-coolant-supply system for electronic equipment cooling.

Author(s) : YASUDA H., TAKAHASHI K., DAIKOKU T., YAMASHITA T., YOSHIKAWA T., ZUSHI S.

Summary

Temperature control methods of a chilled-coolant-supply system for cooling electronic equipment are investigated. This system includes heat generation elements of electronic equipment as heat sources and chillers as heat sinks, which are connected with a closed-coolant circulation loop. The temperature of the coolant supplied to the heat-generation elements is controlled by modulating the capacity of the chillers. A simulation model of this system is developed, and control methods and parameters are investigated theoretically. For stable conditions at chosen operating points of the supply coolant, a PI (proportional and integral) control algorithm of the chiller-capacity modulation is successful. To smoothly raise the temperature to the operating points in the system start-up modes, a feed-forward control method is effective. The simulation results agree well with the actual test data.

Details

  • Original title: Dynamics and control of a chilled-coolant-supply system for electronic equipment cooling.
  • Record ID : 1994-1249
  • Languages: English
  • Source: ASHRAE Transactions 1993.
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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