.TAeZoSysPro.FluidDynamics.Components.Valves.CommissioningDamper

Information

This components computes the (Metric) flow coefficient Kv that insures the mass flow rate m_flow_nominal through the damper at the initialisation if m_flow(fixed=true) enabled.

The flow coefficient Kv derives from the ISA-75.01.01-2007 standard for a compressible valve sizing (see PartialDamper).

dp_ref is used to compute Kv. To be consistent with standard, it should be kept to 1e5 Pa but could be modified by user to have more meaningfull Kv for HVAC application (order of magnitude of pressure drop across damper is 100 Pa) 

Reference temperature is used to compute reference density (for water 1000 kg/m3 reference density is used). atmospheric pressure is used to compute reference density (medium default pressure)

Pressure drop across the damper is generally computed at initialization and derived from boundary condition; 

• To avoid numerical singularities, the flow characteristic is modified for pressure drops less than dp_small. The default value is 1 Pa but should be adjusted if required

Contents

Name	Description
Medium	Medium in the component