ThreeWayValveControl

Three-way valve control (trano ThreeWayValveControl): P controller on the supply temperature measured downstream (filtered by tauSen)

FastSmoothBuildings.Controls.ThreeWayValveControl, model (source)

Purpose

Control of a three-way valve (trano's ThreeWayValveControl): a proportional controller on the supply temperature measured downstream, the measurement filtered by a first-order sensor.

Equations

τ_Sen dT_Mea/dt = u − T_Mea,   T_Mea(0) = T_ColSet − 30 K,

y = smoothLimit(k (T_ColSet − T_Mea), 0, 1, dY), exactly 0 and 1 beyond the blends of smoothLimit.

Parameters

TColSet = 363.15 K, k = 1, tauSen = 10 s, dY = 10⁻³ (the half-width of the smooth limits of the opening).

Use

In Examples.BoilerCircuit and Examples.HeatPumpCircuit.

Parameters

Parameter	Type	Unit	Default	Description
TColSet	Real	K	363.15	Supply temperature set point
k	Real		1	Gain
tauSen	Real	s	10	Time constant of the temperature measurement
dY	Real		1e-3	Width of the smooth limits of the opening

Revisions

• October 2026: moved from trano's FastModel.Controls.