.BuildingSystems.Fluid.FixedResistances

Information

This package contains component models for fixed flow resistances. By fixed flow resistance, we mean resistances that do not change the flow coefficient

k = m ⁄ √Δp.

For models of valves and air dampers, see BuildingSystems.Fluid.Actuators. For models of flow resistances as part of the building constructions, see BuildingSystems.Airflow.Multizone.

The model BuildingSystems.Fluid.FixedResistances.PressureDrop is a fixed flow resistance that takes as parameter a nominal flow rate and a nominal pressure drop. The actual resistance is scaled using the above equation.

The model BuildingSystems.Fluid.FixedResistances.HydraulicDiameter is a fixed flow resistance that takes as parameter a nominal flow rate and a hydraulic diameter. The actual resistance is scaled using the above equation.

The model BuildingSystems.Fluid.FixedResistances.LosslessPipe is an ideal pipe segment with no pressure drop. It is primarily used in models in which the above pressure drop model need to be replaced by a model with no pressure drop.

The model BuildingSystems.Fluid.FixedResistances.Junction can be used to model flow splitters or flow merges.

Contents

Name	Description
CheckValve	Check valve that avoids flow reversal
HydraulicDiameter	Fixed flow resistance with hydraulic diameter and m_flow as parameter
Junction	Flow splitter with fixed resistance at each port
LosslessPipe	Pipe with no flow friction and no heat transfer
Pipe	Pipe with 1D discretisation along flow direction
PlugFlowPipe	Pipe model using spatialDistribution for temperature delay
PlugFlowPipeDiscretized	Discretized pipe model using spatialDistribution for temperature delay
PressureDrop	Fixed flow resistance with dp and m_flow as parameter
Examples	Collection of models that illustrate model use and test models
Validation	Collection of validation models
BaseClasses	Package with base classes for BuildingSystems.Fluid.FixedResistances