blockVentilationHeat
heat input due to ventilation with closed sunblind
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Information
The model considers additional heat input in the event of window ventilation and simultaneously closed external solar protection based on VDI 6007 part 3.The closed external solar protection absorbs solar irradiation which is brought into the room by convection.
References
VDI. German Association of Engineers Guideline VDI 6007-3 June 2015. Calculation of transient thermal response of rooms and buildings - Modelling of solar radiation.
- May 5, 2016, by Stanley Risch:
Implemented.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | x_f | Percentage of open windowarea | |
| Modelica.Units.SI.Distance | d | Distance sunscreen to window | |
| Boolean | screen | If screen: true, if blind: false | |
| Modelica.Units.SI.TransmissionCoefficient | tau_e | Transmission coefficient of sunscreen | |
| Modelica.Units.SI.ReflectionCoefficient | rho_e | Reflection coefficient of sunscreen | |
| Modelica.Units.SI.ReflectionCoefficient | rho | 0.2 | Ground reflection |
| window | |||
| Modelica.Units.SI.Angle | til | Surface tilt. til=90 degree for walls; til=0 for ceilings; til=180 for roof | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.BooleanInput | sunscreen | True: sunscreen closed, false: sunscreen open | |
| Modelica.Blocks.Interfaces.RealInput | HDirTil | Direct radiation on a tilted surface | |
| Modelica.Blocks.Interfaces.RealInput | HDifTil | Diffuse radiation on a tilted surface | |
| Modelica.Blocks.Interfaces.RealInput | HDifHor | Diffuse radiation on horizontal surface | |
| Modelica.Blocks.Interfaces.RealInput | HDirNor | Direct radiation on horizontal surface | |
| Modelica.Blocks.Interfaces.RealOutput | HVen | Heat input due to ventilation | |
| Modelica.Blocks.Interfaces.RealInput | alt | Solar altitude angle |