Daylight + Schools = Health + Learningthedaylightsite.oxmond.com/wp-content/uploads... · Presentation by Hemma Fasch (A) Architect, Fasch & Fuchs Architects, Vienna ... Human Health

VELUX Daylight Symposium Bilbao 1 May 2007

Daylight + Schools = Health +

Learning + Sustainability


VELUX Daylight Symposium Bilbao

Session LeaderJames R Benya, PE, FIES, FIALD, LCBenya Lighting DesignPortland, OR USAUniversity of CaliforniaDavis, CA USA


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


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


Forces of Change

• Energy and Environment• Human Health• Human Productivity• Opportunities for New Architecture


Energy + Environment

Conventional School500,000 BTU/m2/year

Daylighted School300,000 BTU/m2/year or

less50% lower power

demand


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


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


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


Human Health

• Circadian Rhythms• Vitamin D Synthesis


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


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


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


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


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


Opportunities for New Architecture


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


Any Questions

?


I’m done

Documents

Daylight + Schools = Health + Learningthedaylightsite.oxmond.com/wp-content/uploads... · Presentation by Hemma Fasch (A) Architect, Fasch & Fuchs Architects, Vienna ... Human Health