PartialSurface¶
A surface of a zone: area, orientation and its bus
FastSmoothBuildings.Envelope.PartialSurface, partial model (source)
Purpose
Base class of every surface of a zone: the area A seen from the room, the azimuth azi, the
tilt til (see Conventions), the
initial temperature T_start and the bus propsBus_a to the zone.
It computes, from the tilt, the coefficients of the interior natural convection
(convectionCoefficient):
cIntPos when the surface is warmer than the air, cIntNeg when it is colder; and
isFloor, 1 for a surface of tilt π (a floor), 0 otherwise.
Extending classes
They provide the states of the surface and the equations of the bus: the temperature of the room face
(propsBus_a.rad.T), the heat flow rates of its ports con and rad, and the
properties the zone reads, A, epsLw, absSol, tauSol,
isFloor, QTraDir and QTraDif
(SurfaceBus):
PartialOpaque and
Window.
Parameters¶
| Parameter | Type | Unit | Default | Description |
|---|---|---|---|---|
| A | Real | m2 | Area seen from the room | |
| azi | Real | rad | 0 | Azimuth: 0 south, pi/2 west |
| til | Real | rad | Tilt: 0 roof (ceiling), pi/2 wall, pi floor | |
| T_start | Real | K | 294.15 | Initial temperature |
Revisions¶
- October 2026: moved from trano's
FastModel.Envelope.