Windows and Lighting in Net Zero Energy Buildings

Transcription

1 Windows and Lighting in Net Zero Energy Buildings REHVA Annual Conference 2011 Tallinn, Estonia 19 th - 20 th May 2011 Prof. Dr Jean-Louis Scartezzini Solar Energy and Building Physics Laboratory Ecole Polytechnique Fédérale de Lausanne (EPFL)

2 Jourda et Perraudin (Lyon/France) INTRODUCTION Net Zero Energy Building (Forum Chriesbach, Switzerland) Bartenbach Lichtlabor (Dorbirn/Austria)

3 Primary Energy Demand [MJ/m2.a] INTRODUCTION Primary Energy Demand (Swiss Buildings Standard) Embodied Energy Electricity Cooling Heating SIA 380/1 Minergie Minergie-P Forum Chriesbach EAWAG, Forum Chriesbach, 2006.

4 STRUCTURE OF PRESENTATION Introduction EPFL Daylighting Research Platform Daylighting Resources and Provision Anidolic Daylighting Systems LESO Solar Experimental Building (EPFL, Switzerland) Integrated Day- and Electric Lighting (Greenlighting) Net Zero Energy Building (BCA, Singapore) Conclusion

5 EPFL DAYLIGHTING RESEARCH PLATFORM Daylighting Design and Analysis Tools (LESO-PB Daylighting Laboratory) Hardware Automated Heliodon Scanning Sky Simulator Movable Test Modules Digital Sky Scanner Bidirectional Goniophotometer Software ADELINE/Radiance Programme LESO-DIAL Fuzzy Logic Tool DIAL-Europe Fuzzy Logic Tool HDR Imaging Technique 6

6 DAYLIGHTING RESOURCES AND PROVISION Luminous Efficacy of Daylight and Electric Light Sources Low Efficacy Range High Efficacy Daylight Provision Winter Overcast Sky Lux Clear sky Lux Summer Overcast Sky Clear Sky Lux Lux Scartezzini et al., Principles of Lighting, OFQC,1993.

7 ANIDOLIC DAYLIGHTING SYSTEMS Application of Non-Imaging Optics (Etendue Conservation) Scartezzini and Courret, Solar Energy, 73(2), 2002.

8 ANIDOLIC DAYLIGHTING SYSTEMS Luminous Performance and Energy Savings (DIANE Test Modules) Reflection Factors Anidolic Daylighting System Double Glazing Insulated Dark Glazing Room Scartezzini et al., Daylighting Design of European Buildings 1997.

9 ANIDOLIC DAYLIGHTING SYSTEMS Luminous Performance and Energy Savings (DIANE Test Modules) 50 % ANNUAL DAYLIGHTING AUTONOMY (300 Lux / Urban) Scartezzini et al., Daylighting Design of European Buildings 1997.

10 LESO-PB/EPFL, Lausanne (Switzerland) LESO SOLAR EXPERIMENTAL BUILDING Anidolic Zenithal Collector LESO Solar Building (Minergie-P Standard)

11 LESO SOLAR EXPERIMENTAL BUILDING Annual Energy Balance (Sankey Diagram) Losses 3 kw PV Power Plant 15.5 MJ/m2.a Losses PC & Appliances 129 MJ/m2.a Lighting 42 MJ/m2.a Walls Heating ACH Altherr et al., Building and Environment, 37(12), 2002.

12 Installed power (W/m2) Lighting power density [W/m²] GREENLIGHTING TECHNOLOGY Best Practice 16 Electric Lighting Power (LESO Office Rooms) High Fraction of Indirect Lighting Task Lighting with Incandescent Light Bulbs Over-sized Direct Lighting W/m 2 Average Office

13 Lighting Power Density [W/m²] GREENLIGHTING TECHNOLOGY Mitigation of Electric Lighting Power (Integrated Systems) Current 9.1 Compact Fluorescent 8.3 Direct Mode 7.0 Optimal Design 5.6 High Efficacy Light Sources Highly Efficient Luminaries Optimal Design 3 2 ~ Linhart and Scartezzini, Solar Energy, 84(4), 2010.

14 GREENLIGHTING TECHNOLOGY Anidolic Luminary 200 lux 250 lux 150 lux LESO Solar Experimental Building (Office Room Integrated Lighting System) Highly Efficient Electric Lighting (LPD = 3.5 W/m 2, η = 96%)

15 ANIDOLIC DAYLIGHTING SYSTEMS Anidolic Integrated Ceiling (DEMONA Test Modules)

16 ANIDOLIC DAYLIGHTING SYSTEMS Anidolic Integrated Ceiling (DEMONA Test Modules) DF 9% DF 4% Courret et al., Energy and Buildings, 28(1), 1998.

17 NET ZERO ENERGY BUILDING Singapore Zero Energy Building (BCA Academy, Singapore) Wittkopf S., Proc. of Green Building Asia, Singapore, 2011.

18 NET ZERO ENERGY BUILDING Advanced Daylighting Systems (ZEB, Singapore) Anidolic Integrated Ceiling Linhart et al., Solar Energy, 84(7), 2010.

19 NET ZERO ENERGY BUILDING Advanced Daylighting Systems (ZEB, Singapore) Wittkopf S., Proc. of Green Building Asia, Singapore, 2011.

20 NET ZERO ENERGY BUILDING Monthly Energy Balance (ZEB, Singapore) Wittkopf S., Proc of Green Building Asia, Singapore, 2011.

21 CONCLUSION Primary Energy Demand for Electrical Appliances and Lighting remains very significant in Net Zero Energy Buildings Mitigation of Electric Lighting Power can be achieved by the way of Greenlighting Technology (LPD 3.5 W/m2) Integration of Highly Efficient Daylighting and Electric Lighting Systems are basic for Greenlighting Technology Focus must be placed on other Electrical Appliances than Lighting as well as on Embodied Energy for Net Zero Energy Buildings

22 Thank you for your attention!