HK20090514 998
HK20090514 998

Daylight, Energy Efficiency and Human Health

The 3rd daylight symposium focused specifically on the benefits of daylight in connection with energy use in buildings and human health.

Worldwide interest in daylighting has been renewed considerably to meet future challenges in relation to energy efficiency and a growing movement towards sustainable buildings has established a hopeful target for buildings to reach energy self-sufficiency in the near future.

At the same time, medical and health research is focusing more on light and its effect on human health and a unified understanding of light and its impact on human beings have evolved; in general, buildings using daylight are healthier places to live in.

Explore the sessions from the 3th VELUX Daylight Symposium
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13 MAY 2009

09:00 – 10:45

Welcome by the VELUX Group
“Daylight – a gift of nature” by Nick Baker (UK)
“Circadian photoreception: more than meets the eye” by Steven W. Lockley (US)
“Prospective design implications of recent findings in photobiology” by Marilyne Andersen (US)
“Here comes the sun” by Tor Nørretranders (DK)

11:30 – 13:00

“Daylighting legislation and health” by Mohamed Boubekri (US)
“The role of daylight in the existing and the future French building regulations” by Christophe Martinsons (FR)
“Daylight and comfort in the indoor environment” by Myriam Aries / Laurens Zonneveldt (NL)

14:00 – 15:00

“Daylight and modernity: design and redesign of the Van Nelle Design Factory (1925-31) and Zonnestraal Sanatorium (1928-31)” Keynote lecture by Wessel de Jonge (NL)

15:00 – 15:45

“Climate-based daylight analysis for residential buildings” by John Mardaljevic (UK)
“Designing with daylight under large roofs” by Paul Kalkhoven (UK)

16:00 – 18:00

“Tools and metrics” workshop by John Mardaljevic (UK)
“Daylight, sustainability and health in architectural education” workshop by Rolf Gerstlauer (NO)
“Sustainable building design in relation to daylighting” workshop by Kees Duijvestein (NL) 
“Dutch Light – the movie” presented by Pieter-Rim de Kroon (NL)

14 MAY 2009

09:00 – 10:00

“Constructing the ephemeral – light in the public realm” Keynote by James Carpenter (US)

10:00 – 10:45

“Solar heat versus solar light” by Javier del Rio (CL)
“TimeLight – a theoretical investigation” by Federico Favero (SE)

11:30 – 13:00

“Energy efficient daylighting solutions, trends and chances” by Wilfried Pohl (AT)
“Long term assessment of the costs associated with lighting and daylight techniques”´by Marc Fontoynont (FR)
“The realized savings ratio: measured versus predicted energy savings for daylight harvesting” by Lisa Heschong (US)

14:00 – 15:00

Outro discussion facilitated by James R. Benya (US), Marc Fontoynont (FR) and Tor Nørretranders (DK)
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Photo: ©Van Nelle Press Photo

Van Nelle Design Factory

The Van Nelle Design Factory (Ontwerpfabriek) in Rotterdam is one of the masterpieces of Dutch Modernism. The building was designed as a tobacco factory by the architects Leendert Van der Vlugt and Johannes Brinkman and built between 1925 and 1931. It is of inestimable cultural and historical value, having the status of a nationally protected monument and being included in the UNESCO World Heritage list.

The building, originally constructed for coffee, tea and tobacco production, was designed around the concepts of light, air and space. In the mid 1990s the factories were closed and renovation work started in 1998. Today it houses workspaces for companies in the area of design and communication as well as it is an attractive location for events, conferences, seminars, movie and theatre productions and photo-shoots.


All talks are now available to watch or revisit for everyone. We hope to spark interest in becoming a part of the next symposium.

Explore all the talks from the Daylight Symposium 2009