daylight design

8/10/2019 daylight design

1/22

www.illuminart.net

Daylighting Design

Considerations and services offered by IlluminArt


2/22

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.


3/22

Lighting is not about footcandles


4/22


5/22

Considerations that need to beaddressed early in the design processwith the owner as they have a bigimpact on long term costs


6/22

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


7/22

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.


8/22

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


9/22

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
http://www.h-m-g.com/Default.htmhttp://www.h-m-g.com/Default.htmhttp://www.h-m-g.com/Default.htm


10/22


11/22

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


12/22

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


13/22

Light louvers An example of some of the many new products are now


14/22

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


15/22

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



16/22

Electric lighting rendering

Daylight analysis and computer modeling take the guess work out of your designs


El t i li hti t d li


17/22

Electric lighting computer modeling


18/22

Daylight analysis and computer modeling

New office lighting design methods with daylight integration to reduce energy


19/22

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


20/22

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


21/22

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/


22/22

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
http://www.illuminart.net/http://www.illuminart.net/

daylight design

Documents