PartialLink¶
Pressure-driven outlets of a component without resistance in Buildings: a small linear one, dpLink at the nominal flow of each outlet. It must stay small against the branches it feeds: at 1000 Pa, the manifold of six radiators of the renovated house took a fifth of the head of the living room branch, whose valve then opened fully a third more often than in Buildings
FastSmoothBuildings.Hydronics.PartialLink, partial model (source)
Extends PartialConserving.
Purpose
Pressure-driven outlets of a component that has no flow resistance in Buildings (a sensor, a pass-through). With pressure-driven flows every outlet needs a conductance; this class gives it a small linear one.
Equations
With pressure-driven flows, for each of the nb = nPorts_b outlets,
port_b[j].m_flow = −Glink (pin −
pb,j), Glink = m_flow_nominal /
(nb dpLink),
so that the nominal flow, shared evenly by the outlets, passes at the pressure drop dpLink. The
compliance of the inlet node is scaled by the total conductance GHyd =
nb Glink. With set flows, the class adds nothing to
PartialConserving.
Parameters
dpLink must stay small against the pressure drops of the branches the link feeds. At 1000 Pa, the
manifold of six radiators of the renovated house took a fifth of the head of the living room branch, whose valve
then opened fully a third more often than in Buildings; the default is 100 Pa.
Extending classes
They give TOut, e.g.
Pipe and
TemperatureSensor.
Parameters¶
| Parameter | Type | Unit | Default | Description |
|---|---|---|---|---|
| m_flow_nominal | Real | kg/s | 0.15 | Nominal flow |
| dpLink | Real | Pa | 100 | Pressure drop at the nominal flow (pressure-driven flows) |
| GLink | Real | kg/(s.Pa) | m_flow_nominal/nPorts_b/dpLink | Conductance of each outlet |
Revisions¶
- October 2026: moved from trano's
FastModel.Hydronics.