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Saving fan energy in VAV systems. 2. Supply fan control for static pressure minimization using DDC zone feedback.

Author(s) : ENGLANDER S. L., NORFORD L. K.

Summary

In the paper, two methods of controlling the supply fan to minimize duct static pressure without sacrificing occupant comfort or adequate ventilation are proposed and evaluated. Both methods make use of feedback from local zone flow control loops, which has recently become possible with the introduction of direct-digital-control (DDC) terminal boxes. Both methods were computerised (simulation program HVACSIM). Preliminary evaluation of the proposed static pressure control shows that such a strategy is feasible in systems combining VSDs (variable-speed drives) and DDC terminal boxes.

Details

  • Original title: Saving fan energy in VAV systems. 2. Supply fan control for static pressure minimization using DDC zone feedback.
  • Record ID : 1993-2169
  • Languages: English
  • Publication date: 1992
  • Source: Source: ASHRAE Trans.
    vol. 98; n. 1; 19-32; 6 fig.; 2 tabl.; 16 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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