Lysrum som begreb og redskab
- or the Beauty of Daylight as a Sustainable Lighting Strategy
Merete Madsen, Architect MAA, Lighting Architect, Ph.D.
1
ONE WALL · ONE AFTERNOON
Arkitekt: Tadao Ando. Fotograf: Henry Plummer
2
SHADOW ANALYSIS FOR COMPFORT
AND ENERGY ASSESSMENT
3
SUNLIGHT ANALYSIS FOR URBAN SPACES
4
Daylight calculated as daylight factor
,000 Lux
10
200 Lux
DF =
200
x100 = 2%
10,000
Daylight calculation to asses indoor climate and use of electrical lighting
5
Why skylights are more efficient than windows in the facades
6
Most efficient window configuration
Efficient standard solution - seeking new form
More daylight by raised ceiling height in window areas
7
http://www.bwk.tue.nl/fago/daylight/
High window placement, most efficient, public – risk of glare
Low window placement, less efficient, private, floor reflectance
2
%
2
%
2
%
8
Tilted window frame to reduce glare
- the unique potential of thick walls
9
Er dagslys gratis eller dyrt?
Belysningens omkostninger pr.
år. på et vandret arbejdsplan.
Se længer end etableringen og
tæl driften med.
Hvad er dyrest at ændre? Den
kunstigebelysningen kan laves
om, men hvor tit kan
dagslysforholdende forbedres?
Tænk dagslyset ind fra start.
(Kilde: Long term assessment of the
costs associated with lighting and
daylighting techniques by Marc
Fontoynont, Professor, Director of
Laboratoire des Sciences de
lHabitat, ENTPE – VElux daylight
symposium 2009)
10
Alexander, Christoffer et al.: A pattern language, Oxford
University Press, New York,1977.
Dripps, R.D.: The First House, The MIT Press, Cambridge, 1997.
LIGHT-ZONE(S)
11
Architectural
theory
Concept
Level of dissertation
Science of
illumination
Light-zones
Darkness-zones
- whole
Skylight-zones
Sunlight-zones
Reflected light-zones
Tool
- area
- Intensity
- Distribution and direction
- Colour
- point
12
Aalto’s library
Bryggman’s chapel
Le Corbusier’s foyer
2. Practical matters
3. ’Con amore’
Why these tree exampels?
1. The categories
A.
B.
C.
13
1.
2.
3.
1. Skylight-zones
2. Sunlight-zones
3. Reflected light-zones
14
light-zone(s) holds daylight as a ‘potential’ (to be revealed)
The no-sky line
The ‘(in-)flow of light’
15
Le Thoronet Abbey
Daylight – Character & Quality
”A lot of the learning to work with light,
since it doesn’t form by working with
the hands as clay does, is this working
with light through thought.”
James Turrell, 1996
16
Aalto/Library/Rovaniemi/Finland
-from my PhD-thesis Light-zones as concept and tool
A-A
Daylight factors (%)
B
A
B-B
5
4
3
2
1
15
14
12
14
12
A
Plan
B
17
0
When a daylight opening functions as a ‘daylighting luminarie’
18
Bryggman / Kapelsal / Turku
19
20
June 2 p.m.
Marts/sep. 2 p.m.
Dec. 2 p.m.
The opening
hours of the
chapel?
June 12 noon
Marts/sep. 12 noon
- After hours?
Dec. 12 noon
21
June 10 a.m.
Marts/sep. 10 a.m
Dec. 10 a.m.
Marts/sep. kl. 08
Le Corbusier / Foyer / Paris
22
the directions of light and human perception
23
the directions of light and human perception
24
the directions of light and human perception
25