recordKfW55_Ext
Extends from Buildings.HeatTransfer.Data.OpaqueConstructions.Generic (Thermal properties of opaque constructions).
Information
1. Purpose of model
Record for typical exterior wall of KfW55 building (k=0,2W/m²K).
2. Level of detail, physical effects considered, and physical insight
(no remarks)
3. Limits of validity
(no remarks)
4.Interfaces
(no remarks)
5. Nomenclature
(no elements)
6. Governing Equations
(no equations)
7. Remarks for Usage
This model uses instances of models from the Buildings Library developed by the Lawrence Berkeley National Laboratory. The library can be downloaded at https://simulationresearch.lbl.gov/modelica/download.html.
8. Validation
(no validation or testing necessary)
9. References
Michael Wetter, Wangda Zuo, Thierry S. Nouidui & Xiufeng Pang (2014) Modelica Buildings library, Journal of Building Performance Simulation, 7:4, 253-270, DOI: 10.1080/19401493.2013.765506
Kreditanstalt für Wiederaufbau, „KfW.de,“ 2017. [Online]. Available: https://www.kfw.de/inlandsfoerderung/Privatpersonen/Neubau/Das-KfW-Effizienzhaus/.
10. Version History
Model created by Anne Senkel (anne.senkel@tuhh.de) September 2017
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nLay (from Generic) | Number of layers | |
| Buildings.HeatTransfer.Data.BaseClasses.Material[nLay] | material (from Generic) | Layer by layer declaration of material, starting from outside to room-side | |
| Real | R (from Generic) | sum(material[i].R for i in 1:nLay) | Thermal resistance per unit area |
| Modelica.Units.SI.Emissivity | absIR_a (from Generic) | 0.9 | Infrared absorptivity of surface a (usually outside-facing surface) |
| Modelica.Units.SI.Emissivity | absIR_b (from Generic) | 0.9 | Infrared absorptivity of surface b (usually room-facing surface) |
| Modelica.Units.SI.Emissivity | absSol_a (from Generic) | 0.5 | Solar absorptivity of surface a (usually outside-facing surface) |
| Modelica.Units.SI.Emissivity | absSol_b (from Generic) | 0.5 | Solar absorptivity of surface b (usually room-facing surface) |
| Buildings.HeatTransfer.Types.SurfaceRoughness | roughness_a (from Generic) | Buildings.HeatTransfer.Types.SurfaceRoughness.Medium | Exterior surface roughness |
| Advanced | |||
| Integer[nLay] | nSta (from Generic) | {material[i].nSta for i in 1:nLay} | Number of states in each layer |