Post on 24-Mar-2020
4/2/2009
1
Anthony Giannini & Paris Bunkers
Located on the University of Idaho Campus
Overlooks 3rd floor of Art and Architecture North
Shed roof of perforated steel decking
Single length north-facing clerestory windows
Advanced Painting Studio
Currently students prefer electric lighting while painting
Chose space due to its potential for a complete day lighting system
T8 32W 4100K
4’ long
14 rows with 4 columns of two bulbs each
112 lamps total
Illuminance Meter Readings (fc)
Average DF=11.17%
Average Illuminance with lights off = 108
Average Illuminance with lights on = 201; 86% increase
8.7%
11.8%
13%
88
113.5
123
168
247
189
DAYLIGHT FACTORLIGHTS OFFLIGHTS ON
AVG./ROW
4/2/2009
2
Moscow
Clim
ate
Studio use from 11:30- 1:30 will experience highest available illumination
Primarily cloudy skies which is best for skylights
SkylightsEven distribution of lightDecrease glareEliminate need for electric lights during daytimeFixtures diffuse light
ROOM AREA: 1109 SQFTAREA OF SKYLIGHTS: 140 SQFT% OF FLOOR AREA THAT IS SKYLIGHTS: 12.6%
Existing C
onditions
OVERCAST SKY, MOSCOW ID, THURSDAY FEB.12, 1:30 PM Proposed A
ddition of Skylights
OVERCAST SKY, MOSCOW ID, THURSDAY FEB. 12 1:30 PM
4/2/2009
3
Glare
Glare A
nalysis
EXISTING GLARE
REDESIGN GLARE
• Reduce glare by adding apertures on two surfaces
Existing Daylight Factors: 4.54 % 53% decrease of light on back wall
Redesign Daylight Factors: 8.46% 32.5% decrease of light on back wall
Com
puter Model G
enerated Daylight Factors
Existing design: Light dissipating towards southern wall
Com
puter Model G
enerated Illuminance R
eadings
Redesign: Even distribution of natural daylight
Section D
aylight Coverage
Existing Design•Light falls off as approach southern wall•Students still prefer to paint with electric lights on
Redesign•Distributes light deeply• Skylight fixtures diffuse light throughout•Creates ambient light•Primarily cloudy skies; works well with skylights
115 fc
76 fc43 fc
29 fc
134 fc118 fc
92 fc75 fc
4/2/2009
4
Hours of OperationAssuming full school day of 7:30- 3:30 = 8 hrs/day
Monday-Friday = 40 hrs/day 160 hrs/month
Current Spending.032 kw/hr for 1 lamp . 032kw/hr X 160 = 5.12 kw/hr/monthAverage cost in Idaho for 2008 was 6.24 cents per kwH5.12 X .0624 = .32 .32 X 112 lamps = $35.78 per month
Approximately $430 per year
Redesign PossibilitiesStudio only used during intermediate/advanced painting from 11:30- 1:30 MWWith the new lighting scheme adequate day lighting will be sufficient during duration of work day resulting in no electrical lighting needed
• Initially the loft is an adequate daylight room. There are areas that can be improved specific to painting needs
• Needed to double the amount of daylight to rid of electrical light usage• Potentially saving $430 per year
• Skylight scheme achieved this as well as:• Reducing glare• Increasing illuminance distribution• Taking advantage of abundant
cloudy weather