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Dynamic response and tuning.

Author(s) : HITTLE D. C.

Type of article: Article

Summary

HVAC control systems can be especially difficult to adjust or tune because the process gain of the control loop varies with a range of variables, including the control point. For example, if the air flow rate over a hot water heating coil is cut in half, the ratio of the change in outlet temperature to the change in valve position, called the gain of the coil, will increase significantly. This phenomenon is commmon in multizone and variable air volume applications.

Details

  • Original title: Dynamic response and tuning.
  • Record ID : 1998-2270
  • Languages: English
  • Subject: General information
  • Source: ASHRAE Journal - vol. 39 - n. 9
  • Publication date: 1997/09
  • Document available for consultation in the library of the IIR headquarters only.

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