Post on 15-Aug-2020
VELUX Daylight Symposium Bilbao 1 May 2007
Daylight + Schools = Health +
Learning + Sustainability
VELUX Daylight Symposium Bilbao 2 May 2007
VELUX Daylight Symposium Bilbao
Session LeaderJames R Benya, PE, FIES, FIALD, LCBenya Lighting DesignPortland, OR USAUniversity of CaliforniaDavis, CA USA
VELUX Daylight Symposium Bilbao 3 May 2007
Programme09:00 Welcome
09:10 “Daylight + Schools = Health + Learning + Sustainability” - James R. Benya (USA)Principal of Benya Lighting Design, Architectural Lighting and Daylighting Designers and Consultants
09:35 “Health, architecture and the sun” - Richard Hobday (GB) Consulting Engineer, Researcher, Lecturer and Author
10:00 “Daylighting and Student Performance” – Lisa Heschong (USA) Consulting Architect, Principal of Heschong Mahone Group
10:45 Coffe break + discussion
11:45 Sonderschule Schwechat (school for disabled children) (A) Presentation by Hemma Fasch (A) Architect, Fasch & Fuchs Architects, Vienna
12:10 Daylight evaluation by Christian Vogt (CH)Principal of Vogt & Partner, Lighting Consultant
12:35 User evaluation by Ingeborg Schramm, (A)Director, Sonderschule Schwechat
13:00 Discussion + recap – Jim Benya
VELUX Daylight Symposium Bilbao 4 May 2007
Renaissance in School Daylight Design
Schools daylighted of necessity
Electric lighting becomes commonplace
Fluorescent lighting at 40 w/m2+
Windows eliminated to save energy; lighting at20 w/m2
Daylight reintroduced; lighting at 12 w/m2
Daylighting use increases; lighting at 9 w/m2
1900
1930
1960
1980
2000
2006
VELUX Daylight Symposium Bilbao 5 May 2007
Forces of Change
• Energy and Environment• Human Health• Human Productivity• Opportunities for New Architecture
VELUX Daylight Symposium Bilbao 6 May 2007
Energy + Environment
Conventional School500,000 BTU/m2/year
Daylighted School300,000 BTU/m2/year or
less50% lower power
demand
VELUX Daylight Symposium Bilbao 7 May 2007
The Sidwell Friends SchoolWashington DC USA 38ºN - LEED Platinum
• Aggressive daylighting in new and existing wings• Natural ventilation and ceiling fans to minimize HVAC• Automatic daylight dimming • PIER 4.5 Lighting System
VELUX Daylight Symposium Bilbao 8 May 2007
The Chartwell SchoolSeaside, California USA 36ºN - LEED Platinum*
• Net Zero Electricity with On site PV generation• Windows, skylights, clerestories, tubular daylighting devices• Natural ventilation, passive cooling
VELUX Daylight Symposium Bilbao 9 May 2007
The Chartwell SchoolSeaside, California USA
Classrooms• Each classroom has
at least two types of daylighting– Windows– Skylights– Clerestories
• Automatic daylight dimming
• PIER 4.5 classroom lighting system
VELUX Daylight Symposium Bilbao 10 May 2007
Human Health
• Circadian Rhythms• Vitamin D Synthesis
VELUX Daylight Symposium Bilbao 11 May 2007
VELUX Daylight Symposium Bilbao 12 May 2007
Circadian Rhythms
Bright Days• Exposure to blue (465
nm) radiation• At beginning of waking
cycle• For at least 30 minutes at
>2500 lux white equivalent
• On going exposure throughout waking cycle
Dark Nights• Little or no exposure to
blue radiation• At beginning and through
the sleeping cycle• Dark sleeping
environment
VELUX Daylight Symposium Bilbao 13 May 2007
Circadian Health Bright Days• Lifestyle changes include
early morning exposure to natural or electric light >2500 lux
• Building design to achieve interior light levels >500 lux most of the day
• Supplemental lighting >2500 lux in near-polar climates might be considered for break and exercise areas
Dark Nights• Lifestyle changes include
avoiding white and blue-rich light ~12 hours after start of the waking cycle (including TV and computer)
• Building design to achieve interior light levels
VELUX Daylight Symposium Bilbao 14 May 2007
Vitamin D Synthesis
• Suggested as critically necessary for immune system performance
• Requires skin exposure to UV-A and UV-B• 10-15 minutes of exposure at summer
outdoor light levels• Atmospheric UV decreases in winter• Unusable low amounts of winter UV at
latitudes >40 degrees
VELUX Daylight Symposium Bilbao 15 May 2007
Vitamin D Synthesis
Design Response• Facilities that
encourage daily outdoor exposure
• Consider providing access to UV generation or Vitamin D Supplements
Lifestyle Response• Daily skin exposure to
natural light at outdoor levels
• For near polar climates, consider winter Vitamin D supplements or exposure to UV sources
VELUX Daylight Symposium Bilbao 16 May 2007
Learning and Productivity
• Daylighted classrooms have higher student test scores (Heschong Mahone Group – PIER Report)
• European standards for office building design
• LEED Environmental Quality standards
VELUX Daylight Symposium Bilbao 17 May 2007
Opportunities for New Architecture
VELUX Daylight Symposium Bilbao 18 May 2007
Opportunities for New Architecture
VELUX Daylight Symposium Bilbao 19 May 2007
Opportunities for New Architecture
VELUX Daylight Symposium Bilbao 20 May 2007
Opportunities for New Architecture
VELUX Daylight Symposium Bilbao 21 May 2007
The Benefits of Daylight
For the Environment• 25-100% less energy useFor the Student• Better learning, better healthFor the School• Happier and healthier students and facultyFor the Earth• A better future
VELUX Daylight Symposium Bilbao 22 May 2007
Any Questions
?
VELUX Daylight Symposium Bilbao 23 May 2007
I’m done