FACEcamp Results Seminar 20/05/2019 NOI Techpark, Bolzano (Italy) Monday, May 20th, 2019 NOI Techpark, Bolzano-Bozen

1. FACEcamp Results Seminar
Modelling tool chain for advanced
façade performance assessment
Martin Hauer, Giuseppe de Michele, Daniel Plörer
Bartenbach GmbH, EURAC Research, University of Innsbruck
www.interreg.net
FACEcamp final event | Bolzano, 20-21 May 2019
FACEcamp is funded by European Regional Development Fund and Interreg V-A Italy-Austria 2014-2020.

2. Contents
➢ Fundamentals / State of research in CFS modelling
➢ FACEcamp toolchain approach
➢ Investigated comparison studies: theoretical and measurement
➢ Conclusions (constraints, potential for improvements)
The Future Envelope 12 final event 20-21 May 2019, Bolzano

3. Modelling of Complex Fenestration Systems
The Future Envelope 12 final event 20-21 May 2019, Bolzano
without shading system:
➢ Glare
➢ Visual discomfort
➢ Thermal discomfort
E > 500 lx
L > 5000 cd/m²
800W/m²
E > 500 lx
L < 1000 cd/m²
800W/m²
100W/m²
6-10 W/m²
with shading system:
➢ Avoiding Glare
➢ Reducing Solar Gains
➢ High artificial light loads
using conventional shading systems

4. The Future Envelope 12 final event 20-21 May 2019, Bolzano
Modelling of Complex Fenestration Systems

5. The Future Envelope 12 final event 20-21 May 2019, Bolzano
Reflection Transmission
Modelling of Complex Fenestration Systems
using bi-directional scattering distribution functions (BSDFs)

6. Modelling of Complex Fenestration Systems
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Longwave radiation modelling using the ISO15099 standard
Source: Transsolar
Source: EN ISO15099
discretized blind model
based on view-factors:

7. The Future Envelope 12 final event 20-21 May 2019, Bolzano
Measurements Combine measurements and
simulations
Combine shading model with glass layers
Simulation in Building Simulation Tools (BTS)
Daylighting and energy analysis
• genBSDF
• Goniophotometer
Modelsetup

8. FACEcamp – Simulation tool chain
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Radiance
Daylight Simulation
Artlight
3-phase-method
BB-glare approach
„IFC-translator“WINDOW7
3-phase-method
5-phase-method
DGP
Toolchain1:Toolchain2:Toolchain3:*
glassAdvisor
FacadeGIS
freeBIM-Tirol
Geometry modelling
System data

9. Toolchain 1:
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Rhino – Honeybee – EnergyPlus/Radiance
Source: https://github.com/mostaphaRoudsari/honeybee/wiki
• Annual daylight simulation based on
the 3/5-Phasen-Method in Radiance
• Glare evaluation using DPG
• Thermal modelling using BSDF-Data
and the ISO15099 algorithm
• Integration of OpenStudio Interface
• Coupling to Window/Therm for
detailed FE-calculations

10. The Future Envelope 12 final event 20-21 May 2019, Bolzano
Toolchain 2:
Rhino – TRNLizard – TRNSYS/Artlight
• Development of a timestep-based
coupling between Energy- and
Daylight simulation
• Annual daylight simulation based on
the 3-Phasen-Method in Radiance
• Detailed thermal modelling using
BSDF-Data and the ISO15099 algorithm
• Implementation as Non-Standard-Type in
TRNSYS18 (Type265)
SketchUp/Rhino
Type56
Radiance3PM
Iterative
solving
Artlight
• Artl [W/m²]
• E [lx]
• L [cd/m²]
• Blind
• Metrics
Type265

11. Overview on tools performance:
The Future Envelope 12 final event 20-21 May 2019, Bolzano
toolchain 1 (Honeybee) vs. toolchain 2 (TRNLizard)
Toolchain 1
(Honeybee)
Toolchain 2
(TRNLizard)
Multizone Energy Balance ++ ++
Daylight based light control ++ ++
Complex fenestration systems (Energy and
Daylight)
+ ++
Coupled Energy and Daylight simulation
(timstep based)
+ ++
Direct integration of Radiance ++ +
Different CAD-Tools ++ ++

12. Model comparison: HB (E+) with TRNLizard (TRNSYS)
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Case 1: Theoretical PASSYS model
• Adiabatic box with south-oriented Façade
• Construction setup based on literature values
Case 2: Real PASSYS model
• Box with external boundary temperatures
• model input based on site monitoring data
Test room: PASSYS cell at UIBK
1. Modelling based on physical definitions (theoretical)
2. Parameter-fit according to calibration phase
3. Model comparison between measurement
and simulation: (DL +TH)

13. Theoretical toolchain comparison: Heating/Cooling
The Future Envelope 12 final event 20-21 May 2019, Bolzano
E+ TRNSYS
heating cooling heating cooling
Wh/m2 5289.937 48420.47 6800 483687
kWh/m2 5.290 48.420 6.800 48.687
heating cooling
Diff 24.98% 0.55%
E+ TRNSYS
heating cooling heating cooling
Wh/m2 10443.14 12670.2 12193.45 10158.94
kWh/m2 10.443 12.670 12.190 10.160
heating cooling
Diff 15.44% 21.99%
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
heating cooling
kWh/m²a
case 2: glazing + blind (BSDF)
E+ TRNSYS
0,0
10,0
20,0
30,0
40,0
50,0
60,0
heating cooling
kWh/m²a
case 1: only glazing
E+ TRNSYS
FA2: diffuse blind – 45° | FA3: specular blind – 0°FA2/FA3: Glazing (TRN: BSDF / E+ spectral file)

14. Theoretical toolchain comparison: Solar transmission
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Case 2: FA2: diffuse – 45° | FA3: specular – 0°

15. Theoretical toolchain comparison: Daylight results
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Case 2: FA2: diffuse – 45° | FA3: specular – 0°

16. Monitoring period 1:
26/09/17 – 06/10/17
FA2: glass
FA3: glass Model setup:
Monitoring period 2:
21/11/17 – 14/12/17
FA2: AR60 (00deg)
FA3: VEC6030 (00deg)
Available measurements – PASSYS cell
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Installed facades: FA2: diffuse blind | FA3: specular blind
IT,ID
Tdrybulb, measured
Rhum, theoretical
Tsky, theoretical
Tout, walls
Ttestroom Tserviceroom
QcoolQheat
Qint gains
Tin, walls
Test facade

17. Toolchain measurement comparison – Cooling loads
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Installed facades: FA2: glass / diffuse blind 0° | FA3: glass / specular blind 0°
only glazing with blinds

18. Toolchain measurement comparison – Daylight
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Installed facades: FA2: diffuse blind 0° | FA3: specular blind 0°
Sensor position: facade-near Sensor position: facade-far

19. Toolchain measurement comparison – Daylight
The Future Envelope 12 final event 20-21 May 2019, Bolzano
Installed facades: FA2: diffuse blind 0° | FA3: specular blind 0°
only glazing with blind

20. Conclusions
The Future Envelope 12 final event 20-21 May 2019, Bolzano
• Model setup: → both toolchain approaches enable to use detailed specification of
façade related aspects and show high flexibility, same system data specification
• Theoretical comparison: → differences in modelling results, although alignment
of boundary conditions
• Comparison against measurements: → both toolchain approaches show the
ability to reproduce measured system data with reasonable accuracy
• Applicability/Accessibility: Most of specification data is free available, detailed
user-knowledge is required!
• Outcomes: detailed evaluations possible, but using detailed Building Simulations
tools does not guarantee reliable results

21. Thank you for your attention!
www.interreg.net
Martin Hauer
Bartenbach GmbH
martin.hauer@bartenbach.com
FACEcamp is funded by European Regional Development Fund and Interreg V-A Italy-Austria 2014-2020.