modelPoints_m_flow

Powerlaw with flow coefficient and flow exponent fitted based on 2 datapoints

Extends from Buildings.Airflow.Multizone.Coefficient_m_flow.

Information

Model that fits the flow coefficient of the massflow version of the orifice equation based on 2 datapoints of mass flow rate and pressure difference.

A similar model is also used in the CONTAM software (Dols and Walton, 2015).

References

  • W. S. Dols and B. J. Polidoro,2015. CONTAM User Guide and Program Documentation Version 3.2, National Institute of Standards and Technology, NIST TN 1887, Sep. 2015. doi: 10.6028/NIST.TN.1887.

Parameters

TypeNameDefaultDescription
Test data
Modelica.Units.SI.PressureDifference[2]dpMea_nominalPressure difference of two test points
Modelica.Units.SI.MassFlowRate[2]mMea_flow_nominalMass flow rate of two test points

Revisions

  • February 2, 2022, by Michael Wetter:
    Revised implementation.
    This is for IBPSA, #1436.
  • Apr 6, 2021, by Klaas De Jonge:
    First implementation.