Creative Arts Building. Bae-Won Koh, AIA, LEED AP BD+C Innovative Design

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1 Creative Arts Building Bae-Won Koh, AIA, LEED AP BD+C Innovative Design

2 CREATIVE ARTS BUILDING INNOVATIVE DESIGN 36,500 square foot (net) building

3 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Entrance Dye Garden Courtyard Wetland Outdoor seats Loading Cooling tower Dust collector Parking Entrance Parking Parking

4 Level 1 Plan

5 Level 2 Plan

6 Level 3 & Mezzanine Plan

7 CREATIVE ARTS BUILDING INNOVATIVE DESIGN

8 ENERGY

9 Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy

10 Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy

11 Orientation Impact on overall campus masterplan Impact on existing green spaces Impact on parking and access Solar access

12 Thermal Gains by Window Orientation Btus/Square Foot Glass/Day 32 0 Latitude North

13 Orientation Maximize solar access Sun Angles for 35 o N Latitude

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15 Other Efficiency Features High insulation R-value R-30 walls R-30 roofs Thermal mass CMU walls throughout Exposed concrete slab throughout Selective glazing Translucent insulated glazing for south clerestory windows Low-e clear insulated glazing for south view windows Clear insulated glazing for north clerestory & view windows

16 Other Efficiency Features Natural ventilation w/ stack effect Outdoor condition indicator at windows Cross ventilation transfer grilles and chimney CFD (Computational Fluid Dynamics) analysis performed

17 Other Efficiency Features Occupants tolerance Industrial studios with slightly high temp set-up for cooling Efficient equipment Plug & process load intensive programs HE Kilns for Clay and Jewelry Studios

18 Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy

19 Daylighting Impact on style of the building Importance of orientation Benefits of daylighting (energy savings, productivity and health) Lightshelves and roof monitors

20 Accurately simulate daylighting performance Make sure design tools can account for peak cooling load reduction (daylighting and roof assembly) Peak Cooling (total facility) Durant Middle Raleigh, NC 23% Millbrook Elementary Raleigh, NC 11% Heritage Middle Wake Forest, NC 24% Smith Middle Chapel Hill, NC 19% Riverside High Greenville, SC 27% Edmonson Gym Detroit, MI 18% Reedy Fork Elementary Greensboro, NC 18% Virginia Beach Renaissance Virginia Beach, VA 19% Belle Heth Elementary Roanoke, VA 16% Andrew H. Wilson Elementary New Orleans, LA 19% Average 19%

21 Accurately simulate daylighting performance In addition to peak savings, energy consumption is reduced (in total facility) Lighting Total Savings Energy Millbrook Elementary Raleigh, NC 59% 22% Heritage Middle Wake Forest, NC 42% 25% Smith Middle Chapel Hill, NC 64% 16% Riverside High Greenville, SC 7% 20% Edmonson Gym Detroit, MI 44% 12% Reedy Fork Elementary Greensboro, NC 49% 21% Virginia Beach Renaissance Virginia Beach, VA 41% 13% Belle Heth Elementary Roanoke, VA 59% 18% Andrew H. Wilson Elementary New Orleans, LA 38% 13% Average 45% 18%

22 Daylighting Consider roof monitors and lightshelves Light Shelf South-Facing Roof Monitor

23 South-facing roof monitors over large, single story spaces Daylighting

24 Utilize lightshelves to bounce light deeper into space and shade lower view glass Daylighting

25 Daylighting

26 Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy

27 CREATIVE ARTS BUILDING INNOVATIVE DESIGN

28 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Photovoltaics Thermal Heating and Cooling 12,000 Gallon Storage Tank Water Heating

29 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Source: Yazaki

30 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Source: Yazaki

31 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Photovoltaic System Total Peak Annual production 206kw DC 265,500 kwh (25 degree tilt) Size of Array 655 panels x square feet 11,495 square feet Watts/panel 318watts Basis of Design Sunpower 318 Annual Contribution 24,800Btus/square foot/year Mbtu/year

32 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Solar Thermal (Space Heating and Cooling) Size of Array Basis of Design System 117 collectors x 48 square feet 5,616 square feet CPC, 48 square foot Glycol Solar Thermal (Domestic Hot Water) Size of Array Basis of Design System Annual Contribution 20 collectors x 24 square feet 480 square feet CPC, 24 square foot Drainback 30,900 Btus/square foot/year 1,125.1 Mbtu/year

33 CREATIVE ARTS BUILDING INNOVATIVE DESIGN

34 CREATIVE ARTS BUILDING INNOVATIVE DESIGN cooling lighting heating plug Reduced energy by 74%

35 CREATIVE ARTS BUILDING INNOVATIVE DESIGN Energy Saving Btus/sqft/ % year reduction ASHRAE 90.1 base building with plug loads 98,900 SB 668 requirement of 30% reduction 69,200 30% AIA Goal for 2030 Challenge (60% reduction) 39,600 60% Design before solar systems 86,400 13% Solar Thermal (30,900) 55,500 44% Photovoltaics (24,780) 30,700 69% Design with solar 30,700 69% Projected plug loads 18,600 Net energy consumption (excluding plug loads) 12,100

36 Water No potable for irrigation Efficient water fixtures Rainwater for toilet flushing and cooling tower Only native plants/xeriscape

37 Energy Water Impacts 80% of the cost of delivering water is energy Source: Sandia National Lab Water

38 Total 97 large trees (>8 Dia.) are surveyed. 54 are to remain. 43 are to be cut. 60 large trees are to be newly planted. All xeriscape plants no irrigation required. Over 400 shrubs are to be newly planted.

39 Runoff Solutions Nitrogen fees and savings (future) Wetlands as retention during construction Constructed wetlands and bio-swales Pervious vs. impervious

40 Minimize: Nitrogen leaving site Nitrogen

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42 Water Saving Projection Indoor Water Consumption Code Base (incl. cooling tower) Water Efficient Fixtures (151,790 gal) Rainwater (570,545 gal) 977,508 gal/yr 825,718 gal/yr 255,173 gal/yr 74% Reduction

43 Construction $86,000 Cost (CD est.) Year Savings Cumulative (9%/yr inflation) Savings 1 $3,733 $3,733 2 $4,069 $7,802 3 $4,435 $12,237 4 $4,834 $17,071 5 $5,269 $22,341 6 $5,744 $28,085 7 $6,261 $34,345 8 $6,824 $41,169 9 $7,438 $48, $8,108 $56, $8,837 $65, $9,633 $75, $10,500 $85,685 Rainwater Potential

44 Value of rainwater harvesting during drought September and October, 2007 water consumption (peak of drought) 36% of other schools gallons/student/month

45 Monitoring Monitoring provides an interactive graphic interface to teach visitors about sustainable systems Northern Guilford Middle School Innovative Design

46 Monitoring Rainwater Harvesting Monitoring Systems Display Weather Station Flow Meter Flow Meter Depth Gauge Northern Guilford Middle School Datalogger Innovative Design

47 Monitoring Chicago Climate Exchange Dataloggers Solar Water Heating Photovoltaics Daylighting Carbon Dioxide RECs Utilities Rainwater Northern Guilford Middle School Innovative Design

48 Renewable Energy Drivers Carbon Emissions Trading Renewable Energy and Energy Efficiency Portfolio Standard Renewable Energy Certificates

49 Carbon Financial Instruments (CFIs) Jan 2009 values: US = $2.00/ton Europe = $16.60/ton Jan 2009 futures for 2013: US = $11.88/ton Europe = $26.60/ton

50 North Carolina 3.0% of 2011 sales by % of 2014 sales by % of 2017 sales by % of 2020 sales by 2021 Renewable Energy & Energy Efficiency Portfolio Standard NC Senate Bill

51 REC Market Renewable Energy Certificates (RECs) RECs represent environmental attributes of electricity generated from renewables Renewable Energy Certificates Currently bigger driver in US Means by which utilities are addressing Renewable Energy Portfolio Standards (REPS)

52 REC Market Renewable Energy Certificates Personal home with 4kw PV 5 to 7cents/kwh Progress Energy plus 15 cents/kwh NC Green

53 Result Solar Developers willing to implement solar systems at no cost to owner (Install + Finance + Operate + Maintain) Solar Developer leases space from owner REPS & RECs Developer enters into 20 years power purchase agreement with utility Developer takes advantage of tax incentives and REC plus power sale for approximately 6 years Then transfers ownership plus remaining benefits of PPA to owner

54 Site Minimizing clearing and grading Preserving existing pathways and seating Utilizing existing drainage patterns Impact on natural habitat

55 Goals: Healthy Indoors No VOCs/toxics in construction IAQ during construction and before occupancy Daylighting in all work/educational spaces Indoor pollutant control (esp. Finish Rooms and Chemical Storages)

56 Goals: Buying Local Encourage county subcontractors and suppliers Regional materials specified (goal = 20%)

57 Mechanical / Electrical Systems Radiant floor heating High efficiency boiler Efficient lighting w/ daylighting & occupancy sensors Submetering for M&V A gearless, non-hydraulic, regenerative elevator

58 Thank you! Bae-Won Koh, AIA, LEED AP BD+C Innovative Design