Don Frey, P.E. Co Founder and Principal LightLouver LLC

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1 Don Frey, P.E. Co Founder and Principal LightLouver LLC

2 Background LightLouver evolved from extensive experience with sustainable design consulting. Ownership LightLouver LLC is owned by Don Frey, Michael Holtz, and Zack Rogers. Initial Development LightLouver was developed when Don and Michael owned Architectural Energy Corporation (AEC). Corporate Mission The Mission of LightLouver LLC is to provide high quality, highperforming, affordable daylighting and solar control products that reduce energy use, reduce green house gas emissions, and enhance the quality of indoor environments in new and existing buildings.

3 Energy Basics Typical Office Building Energy Costs Office equipment Heating Lighting Heat Gains Lighting Hot Water Fans Cooling Office equip Heat Gains Occupant Heat Gains Shell Heat Gains Solar Heat Gains Outdoor Air Heat Gains Electric lighting accounts for 30-50% of a building s annual energy cost: Typically 50% or more of total electrical load Contributes to cooling load up to 30%

4 Daylighting Basics What is daylighting? The purposeful use of sunlight to meet the illumination requirements of an architectural space.

5 Daylighting Basics Architectural Daylighting Strategies Top daylighting Side daylighting Source: Southern California Edison

6 Problems with Side Daylighting LightLouver solves them Problems Most side daylighting systems such as view windows, light shelves, and clerestory windows perform poorly and are prone to glare. Daylight penetration is limited. Shades are typically closed on daylight windows when the sun is most plentiful. Savings from daylight harvesting are not realized.

7 LightLouver Daylighting System Implements side daylighting strategy LightLouver Unit Patented Optical Slat Design Raytracing diagram illustrating performance under all sun angles

8 LightLouver Applications Office Building -- New Construction Old National Bank Headquarters

9 LightLouver Applications Engineering Offices -- Retrofit application DuBois and King Corporate Headquarters

10 Benefits of LightLouver Deeper Daylight Penetration

11 Benefits of LightLouver Deeper daylight distribution, not just a puddle of light.

12 Benefits of LightLouver Energy Savings

13 Benefits of LightLouver Summer Demand Reduction

14 Benefits of LightLouver LightLouver is cheapest side-daylighting strategy

15 Benefits of LightLouver LightLouver is cheaper than PV 900 sf room (30 x 30 ) Occupied 8 hours per day LPD 0.76 W/sf PV system cost $8,750 LightLouver system cost $1,750 LightLouver provides same amount of illumination as PVpowered electric lights at one fifth the cost.

16 Benefits of LightLouver Summary of features Distributes daylight deep and uniformly into the daylit space Works in any non tropical latitude Provides annual ambient light levels of fc Unique self shading design provides complete solar cut off and glare control Can be used on east, west and south facades No moving parts or daily /seasonal adjustments Custom fabricated to fit specified window size and system Quick and easy installation Provides signficant energy savings Low lifetime maintenance costs Less costly then other options, yet provides better daylighting and solar control performance in one product

17 Benefits of LightLouver One last thought Daylighting is an essential strategy for achieving cost effective net zero energy buildings.

18 LightLouver Applications State Agency -- Clerestory windows above 3 story atrium Caltrans District 3 Headquarters Marysville, California

19 LightLouver Applications Research Laboratory / Offices 2011 AIA COTE Award National Renewable Energy Laboratory Research Support Facility Golden, Colorado

20 LightLouver Applications School 2010 AIA COTE Award Winner Manassas Elementary School Manassas, Virginia

21 LightLouver Customer Testimonial Amazing product! You have radically changed both the comfort and efficiency of my office. My baseball hat is now in the bottom drawer. Both south and west facing LightLouvers intercepted our high elevation Colorado sun to double bounce light to my ceiling and deep back wall. You re the experts, but it appears that the specular shot to the ceiling combined with a diffuse scatter to the working surfaces of my desk and conference table now provide the most comfortable lighting I have ever experienced in any working environment. Switching off the 60 cycle flicker of my recessed ceiling fixtures will indeed be a daily treat; in fact, I can t imagine needing any artificial light during most sunny, or even scattered sunshine working hours.

22 Made in the USA