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in-situ g-value for monitoring of existing building facades Daniel Plorer (Universität Innsbruck), Martin Hauer (Bartenbach)

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

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in-situ g-value for monitoring of existing building facades Daniel Plorer (Universität Innsbruck), Martin Hauer (Bartenbach)

  1. 1. FACEcamp Results Seminar in-situ g-value for monitoring of existing building facades Martin Hauer, Daniel Plörer, Bartenbach GmbH, 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. 2. CFS modelling complexity ?! The Future Envelope 12 final event 20-21 May 2019, Bolzano
  3. 3. Contents ➢ Calorimetric measurement vs. in-situ measurement ➢ In-situ measurement concept and system design ➢ Comparative measurement results via round robin tests ➢ Comparisons against simulations The Future Envelope 12 final event 20-21 May 2019, Bolzano
  4. 4. The Future Envelope 12 final event 20-21 May 2019, Bolzano Calorimetric measurement procedure
  5. 5. The Future Envelope 12 final event 20-21 May 2019, Bolzano Thermal processes in the façade layer g-value ↑ high ↑ in Winter | g-value ↓ low ↓ in Summer Thermal aspects for an energy efficient facade design: 𝑞 𝑎 𝑞 𝑟,𝑖 𝜌 𝑎 𝐼𝑆 𝑞 𝑐,𝑖 𝜏 𝑠 𝑞𝑖 𝑔 = 𝜏 𝑠 + 𝑞𝑖 𝑔 = 𝑠𝑜𝑙𝑎𝑟 ℎ𝑒𝑎𝑡 𝑔𝑎𝑖𝑛 𝑐𝑜𝑒𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑡 [ ] 𝜏 𝑠 = 𝑠𝑜𝑙𝑎𝑟 𝑇𝑟𝑎𝑛𝑠𝑚𝑖𝑠𝑠𝑖𝑜𝑛 [𝑊/𝑚²] 𝑞𝑖 = 𝑠𝑒𝑐𝑜𝑛𝑑𝑎𝑟𝑦 ℎ𝑒𝑎𝑡 𝑓𝑙𝑢𝑥 [𝑊/𝑚²] 𝐼𝑆 = 𝑠𝑜𝑙𝑎𝑟 𝐼𝑟𝑟𝑎𝑑𝑖𝑎𝑛𝑐𝑒 [𝑊/𝑚²]
  6. 6. Earlier conepts and research done The Future Envelope 12 final event 20-21 May 2019, Bolzano Pereira, F. O. and Sharples, S. 1991. The development of a device for measuring solar heat gain and shading coefficients of windows in scale models. Energy and Buildings 17, 4, 271–281 Chantrasrisalai, C. and Fisher, D. E. An In Situ Experimental Method for the Development and Validaton of Slat-Type Blind Models in Cooling Load Calculations. Journal of Solar Energy Engineering 2006, 128, 189–198
  7. 7. In-situ g-value measurement device The Future Envelope 12 final event 20-21 May 2019, Bolzano Sekundäre Wärmeabgabe secondary heat flux Transmission | transmission+ Raum Room Testfassade Test facade Plattenapparatur Measuring apparatus PV-Zelle (innen/außen) PV-cell (inside/outside) VerfahrbareHöhe|moveableheight Fassade|Facade Verfahrbare Höhe | moveable height Idea and concept
  8. 8. In-situ g-value measurement device The Future Envelope 12 final event 20-21 May 2019, Bolzano Heat flux apparatus Cupping vessel Peltier - Element Cooler (with ventilator) Heat flux plate (measuring area) T2T1 Sensor Glazingsurfacetemperature Control circuit 1 Control circuit 2 Aluminium frame ▪ Control circuit 1 (T1) = Primary: (Air temperature → temperature measuring plate) ▪ Control circuit 2 (T2) = Secondary: (create adiabatic boundary conditions)
  9. 9. In-situ g-value measurement device The Future Envelope 12 final event 20-21 May 2019, Bolzano Heat flux apparatus C B C C B CB B Measuring plate Guarded ring Window with blinds Measuring area Air ring (for thermal decoupling)Peltier cooler dT=0 A A A A B B B B 250mm 150mm
  10. 10. In-situ g-value measurement device The Future Envelope 12 final event 20-21 May 2019, Bolzano Designing of first prototype (Taurus Instruments)
  11. 11. In-situ g-value measurement device The Future Envelope 12 final event 20-21 May 2019, Bolzano First prototype Rückansicht | back view: Frontansicht | front view: IdealerAbsorber idealabsorbingplate Raumsituation realrooomconditions
  12. 12. In-situ g-value measurement device The Future Envelope 12 final event 20-21 May 2019, Bolzano Installation
  13. 13. Samples – Round robin tests The Future Envelope 12 final event 20-21 May 2019, Bolzano
  14. 14. Samples – Round robin tests The Future Envelope 12 final event 20-21 May 2019, Bolzano Systems WINDOW7 /Sim BB (calorimetric) UIBK (in-situ) SFL – float 0.703 0.717 0.737 SFL – low-e 0.496 0.546 0.522 SFL – sun (5° AI) 0.29 0.29 0.29 - 0.3 Okasolar (15°AI) 0.15 0.15 0.14 - 0.15 HELLA (cut-off, 5° AI) 0.252 0.24 0.24 Installation: Results:
  15. 15. Okasolar - varying incident angles The Future Envelope 12 final event 20-21 May 2019, Bolzano Mean value End value Tilt angle probe TAU SHGC TAU SHGC -5° 0.09 0.15 0.09 0.151 0° 0.27 0.23 0.29 0.264 5° 0.52 0.41 0.52 0.446 10° 0.56 0.53 0.56 0.552 -5° 0° 5° 10° Round-Robin results
  16. 16. Okasolar - varying incident angles The Future Envelope 12 final event 20-21 May 2019, Bolzano 0.53 0.46 0.29 0.19 Mean value End value Tilt angle probe TAU SHGC TAU SHGC -5° 0.09 0.15 0.09 0.151 0° 0.27 0.23 0.29 0.264 5° 0.52 0.41 0.52 0.446 10° 0.56 0.53 0.56 0.552 Round-Robin results
  17. 17. In-situ façade installation The Future Envelope 12 final event 20-21 May 2019, Bolzano Comparison with WINDOW calculations 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 0 10 20 30 40 50 60 70 80 90 g-value Angle of incidence [AI] gemessener g-Wert g-Wert nach WINDOW 7.5 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 0 10 20 30 40 50 60 70 80 90 g-value Angle of incidecnce [AI] gemessener g-Wert g-Wert nach WINDOW 7.5 SSW- orientation (Azimuth of the facade =20°)
  18. 18. Round-Robin test at UniBz The Future Envelope 12 final event 20-21 May 2019, Bolzano Comparsion with FE-simulation
  19. 19. Logging software and data analysing The Future Envelope 12 final event 20-21 May 2019, Bolzano
  20. 20. 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.

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