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www.illuminart.net
Daylighting Design
Considerations and services offered by IlluminArt
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Sustainable Lighting Design
Human needs
Lighting techniques that support health, well being, visibility and productivity
Economicmanage initial equipment costs with specifications that reduce operations costs
Environmental
reduce carbon emissions, hazardous waste and controls outdoor light pollution
Aesthetic
light that improves interior and exterior design aesthetics.
The Lighting Quality Factor in DesignA new paradigm has developed in lighting that most architects must become aware of;The QVE or Quality of the Visual Environment. It raises the minimum standard of carerequired in the practice of lighting design. It is essential to bring this information to your
client, to discuss the many advantages that new lighting methods can offer. The followingpages illustrate information found in the IES QVE Chapter 10 of the lighting handbook.
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Lighting is not about footcandles
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Considerations that need to beaddressed early in the design processwith the owner as they have a bigimpact on long term costs
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Daylight harvestingis the 1st consideration in high quality lighting
programs; new construction and renovations
Benefits of natural light
Psychological / uplifting
Physiological / healthy
Energy reduction / daylight harvesting
there is nothing more efficient than off
and sunlight is a free resource!
Issues to overcome
an old school design approach the need for fenestration fashion
false beliefs based on pastexperiences
1st cost drivers without looking at ROI lack of owner awareness
its not easy to do it right the 1st time
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Summary examples of published, non-energy benefits ofnatural light integration from recent independent research
complete studies and reports of these conclusions are available on line
Carnegie Mellon summarized findingsfrom 11 studies documenting the impactof high performance lighting onproductivity. Their analysis found that
productivity gains ranged between0.7% and 26.1% with an averagemedian value of 3.2%
High performance schools with multiplefeatures including daylighting and betterelectric lighting cost 1.65% more to build($3.00 a square foot). These schoolswere projected to save 33.4% onenergy, and create a variety of health,learning and other benefits (valued at$74 / sq ft over the life of the building).
Among twelve models considered in thatstudy were identified a central tendencyof a 21% improvement in studentlearning rates from those in classroomswith the least amount of daylightcompared to those with the most.
89 patients undergoing elective surgerywere used in a hospital study. Patientswere placed on either bright or the dimside of the hospital units. Intensity of light
levels were measured daily. The patientson the bright side of the rooms received46% higher intensity daylight than the dimside. Those patients perceived lessperceived stress, marginally less pain,and 22% less analgesic medication per
hour, and had 21% less painmedication costs. (Jeffrey Walsh,University of Pittsburgh Medical Center.Published in the Psychosomatic MedicineJournal, 2005.)
Benefits of Natural Light
HESCHONG MAHONE GROUP, Inc.
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Photos borrowed from theinternet / thank you
Daylighting benefits
In retail are huge
Reduced operations
cost / 5 year payback
And increased salessee next slide
Daylighting in retail
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Skylights were found to be positively and significantly correlated to
higher sales. All other things being equal, an average non-skylitstore in the chain would be likely to have 40% higher sales with theaddition of skylights, with a probable range somewhere between31% to 49%. This was found with 99% statistical certainty. After
the number of hours open per week, the presence of skylights wasthe best predictor of the sales per store of all the variables that weconsidered. Thus, if a typical non-skylit store were averaging salesof $2/sf, then its sales might be expected to increase to somewherebetween $2.61 to $2.98 with the addition of a skylighting system.
HESCHONG MAHONE GROUP, Inc.www.h-m-g.com
Retail Lighting Research Summary
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Daylighting design is a value addedIntegration of architecture, daylight and electric lighting systems to improve worker
performance, reduce operations costs and accurately determine cooling loads.
www.betterbricks.com
Daylight design solutions include:
Awareness by the project owner for approval
Building orientation on site (new construction) Glazing selection / 4 elevations Shading systems / glare control Interior surface reflectance
specifications / LRV
Solar collector options / light pipe Applied sun louvers or solar films Integration of daylight with
electric lighting control systems Whole building energy modeling
integration of daylight, electriclighting and HVAC to reduce costs
Services from professional daylightinglaboratories
skylights
louvers shading
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Planning for daylight integration
Begin plans with orientation of the building on
the site to take full advantage of sun angles fordaylight harvesting.
excessive contrast direct glare
reflected glare / specular surfaces
Glare control is essential to improve visual
comfort using glazing, shading and thespecification of correct surface reflectionvalues
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Light louvers An example of some of the many new products are now
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Light louvers. An example of some of the many new products are nowavailable for daylight harvesting
Upper window / daylight harvesting
Lower window, shading systems, glare control
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Daylight analysis and computer modeling for LEED compliance
3D Model of natural and electric lighting systems
Pseudo color rendering of illuminance values
Provided by Bob Adams LC
Footcandle gradations
Provided by Bob Adams LC
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Electric lighting rendering
Daylight analysis and computer modeling take the guess work out of your designs
Provided by Bob Adams LC
El t i li hti t d li
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Electric lighting computer modeling
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Daylight analysis and computer modeling
New office lighting design methods with daylight integration to reduce energy
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10-20 fcambient
20-40 fctask
30+ fcvertical
56%TOTAL
ENERGY SAVINGS below
ASHRAE 90.1
Layers of light toreduce energy and improveworker satisfaction
Efficient lighting requires a holistic5 step design approach1. Daylight integration2. Control systems
3. Task lighting at each station4. Wall lighting5. Ambient lighting
New office lighting design methods with daylight integration to reduce energy
New methods apply to schools, hospitals and libraries
Li hti D i P
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Design and management of the lighting;
Owner awareness and commitment tosustainable design / early education of lighting quality
considerations for approval.Creation of concepts for sustainable lighting goalsLife cycle costing analysis / budget planningFormal lighting specifications for bidsSupplier awareness of the specifications
Contractor review to answer questions earlyManaging the costs / prevent costly value engineeringgames played in our industry
Site review and verification of specification complianceCommissioning / testing of all systems
Owner / operator review of sustainablelighting systems
Maintenance training of systems, controls,recycling and hazardous waste disposal to assure futureof the sustainable system
Lighting Design ProcessAssignment of person(s) responsible for this process from start through completion
This process is essential to insure lighting quality for the owner
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Useful lighting web sites
Light Right Consortium www.lightright.org IALD International Association of Lighting Designers www.iald.org PLD Professional Lighting Design Magazine www.pldplus.com IES Illuminating Engineering Society www.iesna.org Lightfair International www.lightfair.com
Lighting Design Lab www.northwestlighting.com Lighting Research Center www.lrc.rpi.edu NLB National Lighting Bureau www.nlb.org Northwest Energy Efficiency Alliance www.BetterBricks.com The Heschong Mahone Group www.h-m-g.com
US Department of Energy www.doe.gov CHPS Collaborative for High Performance Schools www.chps.net
GE Lamps www.gelighting.com
Philips Lamps www.lighting.philips.com Osram Sylvania Lamps www.sylvania.com Venture Lamps www.venturelighting.com
http://www.lightright.org/http://www.iald.org/http://www.northwestlighting.com/http://www.lrc.rpi.edu/http://www.nlb.org/http://www.doe.gov/http://www.gelighting.com/http://www.lighting.philips.com/http://www.sylvania.com/http://www.sylvania.com/http://www.lighting.philips.com/http://www.gelighting.com/http://www.doe.gov/http://www.nlb.org/http://www.lrc.rpi.edu/http://www.northwestlighting.com/http://www.iald.org/http://www.lightright.org/ -
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Find this presentation and others on our web site
www.illuminart.net
Outdoor Lighting, LED Risk Management and others
Contact us to learn how our experience may be used to
help support the sustainable lighting goals of your next project
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