modelCorG_ASHRAE140
Correction of the solar gain factor according to ASHRAE 140
Extends from PartialCorG.
Information
Overview
This model computes the transmission correction factors for solar radiation through a double pane window depoending on the incidence angle, based on the ASHRAE140-2017.
Known Limitations
The model is directly paramtrized for a double pane window.
References
- ASHRAE140-2017 Informative Annex B6
- Heating and Cooling of Buildings, Priciples and Practice of Energy Efficient Design (p.142)
- April 24, 2020, by Konstantina Xanthopoulou:
First Implementation. - This is for #889.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | INDRG | 1.526 | Index of refraction of Glass, in this case INDRG= 1.526 |
| Real | p | 2 | number of panes of glass, in this case p = 2 |
| Real | TH | 3.175 | Thickness of glass, in this case TH = 3.175 mm |
| Real | K | 0.0196 | Extintion coefficient, in this case K = 0.0196/mm |
| Real | Rout | 0.0476 | Exterior combined heat transfer coefficient |
| Real | RairGab | 0.1588 | Heat transfer coefficient of air gap |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | AOI | Angle of incidence | |
| Real | AOI_help | ||
| Real | AOR | Angle of refraction | |
| Real | RPERP | Perpendicular reflectance(component of polarization) | |
| Real | RPAR | Parallel reflectance(component of polarization) | |
| Real | R | Reflectance | |
| Real | Trn | Transmittance due to reflectance losses(transmittance if there were just reflectance losses and no absorptance losses) | |
| Real | Tabs | Transmittance due to absorptance losses(transmittance if there were just absorptance losses and no reflectance losses) | |
| Real | L | Path length | |
| Real | T | Total transmittance Tr*Tabs | |
| Real | S | Inward flowing portion of the absorbed radiation in window panes | |
| Real | SHGC | Solar heat gain coefficient | |
| Modelica.Blocks.Tables.CombiTable1Ds | combiTable1Ds | ||
| Real | y | ||
| Modelica.Blocks.Sources.RealExpression | realExpression |