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Approaches and technologies for daylight Non-visual comfort in indoor space Wilfried Pohl (Bartenbach)

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

Published in: Technology
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Approaches and technologies for daylight Non-visual comfort in indoor space Wilfried Pohl (Bartenbach)

  1. 1. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl The Future Envelope 12 It’s all about performances Approaches and Technologies for Daylight Non-visual comfort in indoor spaces Wilfried Pohl Bartenbach GmbH
  2. 2. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Contents • Basics • Calculation models • Technologies
  3. 3. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Impact of light on humans visual response LIGHT is the most important timer! • visual conditions to ‚see‘ • mood/emotions • mental performances • physical processes • well-being, health non-visual response Light therapy Neurophysiological background visual pathNon-visual path
  4. 4. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Non-visual photometry: acute nighttime melatonin suppression George Brainard visual effects of light Acute nighttime Melatonin suppression Impact of light on humans
  5. 5. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Medical Knowledge Gaining • Medical Science deals with deseases • Health: • absent of desease • “Health is a state of complete physical, mental and social well- being and not merely the absence of disease or infirmity.” (WHO) • Cause > effect: • no monocausal effects • cause > effect relation • replaced by risk factors (statistics) • Technical & nature science: • uses mathematical models (metrics) • Lighting health effects: • Mathematical model of health effects ? • Metrics ?
  6. 6. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl factors: harmful substances, trauma, virus, light Environmental factors, protective factors (motion, vitamine, living habits) age sex individual biography outcome-parameter (e.g. illness) Complex interaction of 1014 cells, organ systems and just as much microorganisms Medical Knowledge Gaining
  7. 7. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Neurophysiological background Visual path Non-visual path
  8. 8. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Non-visual light impacts • Night time approach: Avoiding of harmful effects of light during the night time • Melatonin suppression • Minimisation of the blue light component • Adjusted intensity at night time • Preventing of long-term disturbance of the circadian rhythm scientifically proven • Day time approach: Increasing the positive impacts of light in the daytime • Increased intensity at daytime • Usage of cold white lighting • Supporting the daylight • Positive health based impact is scientifically only vague proven "Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.“ (WHO)
  9. 9. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl modelling Light: Intensity at eye level Spectral power distribution non-visual effects Time: exposure duration, daytime derive effective light dose for specific time of day Basics
  10. 10. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Basics - How are models built? Step 1: select relevant studies reporting non-visual light effects Dose-response studies (nighttime light effects of different intensities) Zeitzer et al. (2000) Cajochen et al. (2000) light exposure: 11.30pm - 5.30am (6.5 hrs) large light panel, fixed on the wall fluorescent lamp: cool-white (not specified, est. 4000 K) light exposure: during typ. sleep times, 6.5 hrs ceiling luminaires fluorescent lamp: cool-white (not specified, est. 4000 K) Photometry
  11. 11. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Wavelength [nm] Spectralsensitivity DIN SPEC 5031:100 (2015) Basics - How are models built? Step 2: weight spectral irradiance (at eye level) of the studies with non-visual action spectrum to compare study results
  12. 12. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl based on study measuring acute nighttime melatonin suppression • circadian action factor (DIN SPEC 5031-100, 2009) • circadian stimulus (Rea et al., 2010) based on spectral sensitivity of photopigment Melanopsin • equivalent melanopic illuminance (Lucas et al., 2014) • melanopic daylight equivalent illuminance (DIN SPEC 5031-100, 2015; CEN, 2017) Current approaches to weight light spectrum Basics - How are models built?
  13. 13. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Basics - How are models built? Step 3: derive an effective (daily) light dose usually weighted spectral irradiance exposure duration x
  14. 14. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl General Models • circadian stimulus - CS • circadian action factor Daylight Models • EML (Equivalent Melanopic Lux) - Lucas et al., 2014 • Weighting function for non-visual daytime effects – Technical University Lausanne Calculation Models 4 published models
  15. 15. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Calculation Models 4 published models
  16. 16. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Studies on non-visual light effects 2010 Circadian Stimulus (CS) office: CS ≥ 0.3* morning (1-4 hours) office: 250 lux; 8000 Kelvin 8am -10am Weighting function: Acute nighttime melatonin suppression 2013 today office: EML ≥ 200* morning (4 hours) 2012 Marilyn Anderson (PhD student: Maria Amundadottir) Additional work: Kyle Konis •forD65:175lux;193lux •forD50:245lux;213lux Circadian Action Factor generalmodelsdaylightmodels Weighting function: Sensitivity of photopigment Melanopsin DIN SPEC 67600 2009 Calculation Models 4 published models
  17. 17. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl 2008 2010 2017 2015 2014 Circadian Stimulus (CS) scientifically derived requirement (5 studies) ≥ 0.3 in the morning Calculation Models
  18. 18. Commission for Occupational Health and Safety and Standardization „… DIN SPEC 67600 recommendations are based on insufficient scientific evidence“ „… these recommendations should not be applied for lighting designs“. The Future Envelope 12 final event 20-21 May 2019, BolzanoApproaches and Technologies for Daylight | Non-visual comfort | Wilfried Pohl Circadian Action Factor (simply spectral weighting) Calculation Models
  19. 19. WELL Building Standard Delos Living LLC. Mission: creating spaces that promote human health and well-being. Spaces are certified by achieving scores in seven categories (air, water, nourishment, light, fitness, comfort, mind) 3 Certificates Standard of evaluation: EML (Equivalent Melanopic Lux; Lucas et al., 2014) Recommendations for daylit working areas: EML ≥ 200, from 9am-1pm, every day, 75% of all workplaces Further recommendations for … Living environments, breakrooms and learning areas The Future Envelope 12 final event 20-21 May 2019, BolzanoApproaches and Technologies for Daylight | Non-visual comfort | Wilfried Pohl Calculation Models
  20. 20. (Anderson et al., 2012) light dose in three daytime-periods combine with gaze-, building- & climate-related data morning: 6 am -10 am during the day: 10 am - 6 pm evening/night: 6 pm - 6 am The Future Envelope 12 final event 20-21 May 2019, BolzanoApproaches and Technologies for Daylight | Non-visual comfort | Wilfried Pohl Weighting function for non-visual daytime effects Technical University - Lousanne Calculation Models
  21. 21. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Components: • define days of the year when non-visual light effects should be generated (take daylength & time staying indoors into account) • derive the daily light dose * sum up weighted lux-levels over the course of a day * weighting: lux-levels above 1000 lux get not higher weights (to avoid glare) - weight morning light (8-10am) and afternoon light (1-3pm) with a higher factor * incorporate additional factors (see slides below) • evaluate non-visual effect percentage of relevant days where the goal of 5000 lux-hours (at eye level) is hit Bartenbach - Model Calculation Models 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 0 200 400 600 800 1000 1200 1400 EvamAugebewertet[blx] Ev am Auge [lx] Bewertungsmodell nichtvisuelle Taglichtwirkung unbewertet (Referenz) Modell-bewertet
  22. 22. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Comprehensive retrofit of office: daylight solution, artificial lighting solution, control, interior redesign Bartenbach R&D Office – Aldrans, AT
  23. 23. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Panoramabild BASF Projekt LUX Prototyp bei Bartenbach, Aldrans
  24. 24. Innovative Lösungen für Tages- und Kunstlicht Smart Energy Systems Week Austria 2018, 16.05.2018 Approaches and Technologies for Daylight | Wilfried Pohl Ruby Marie Hotel Wien Foto: Bruno Klomfar
  25. 25. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl ZVK Wiesbaden
  26. 26. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl ZVK Wiesbaden
  27. 27. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Heliostat (Bartenbach)
  28. 28. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl
  29. 29. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried PohlApproaches and Technologies for Daylight | Wilfried Pohl Direkte Sonnenlichtnutzung
  30. 30. The Future Envelope 12 Results Seminar 20 May 2019, BolzanoApproaches and Technologies for Daylight | Wilfried Pohl Thank you for your attention! www.interreg.net Wilfried Pohl Bartenbach GmbH wilfried.pohl@bartenbach.com FACEcamp is funded by European Regional Development Fund and Interreg V-A Italy-Austria 2014-2020.

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