Creative Arts Building Bae-Won Koh, AIA, LEED AP BD+C Innovative Design
CREATIVE ARTS BUILDING INNOVATIVE DESIGN 36,500 square foot (net) building
CREATIVE ARTS BUILDING INNOVATIVE DESIGN Entrance Dye Garden Courtyard Wetland Outdoor seats Loading Cooling tower Dust collector Parking Entrance Parking Parking
Level 1 Plan
Level 2 Plan
Level 3 & Mezzanine Plan
CREATIVE ARTS BUILDING INNOVATIVE DESIGN
ENERGY
Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy
Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy
Orientation Impact on overall campus masterplan Impact on existing green spaces Impact on parking and access Solar access
Thermal Gains by Window Orientation Btus/Square Foot Glass/Day 32 0 Latitude North
Orientation Maximize solar access Sun Angles for 35 o N Latitude
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
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
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
Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy
Daylighting Impact on style of the building Importance of orientation Benefits of daylighting (energy savings, productivity and health) Lightshelves and roof monitors
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%
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%
Daylighting Consider roof monitors and lightshelves Light Shelf South-Facing Roof Monitor
South-facing roof monitors over large, single story spaces Daylighting
Utilize lightshelves to bounce light deeper into space and shade lower view glass Daylighting
Daylighting
Efficiency Daylighting Solar Water Heating Space Heating & Cooling Photovoltaics Energy
CREATIVE ARTS BUILDING INNOVATIVE DESIGN
CREATIVE ARTS BUILDING INNOVATIVE DESIGN Photovoltaics Thermal Heating and Cooling 12,000 Gallon Storage Tank Water Heating
CREATIVE ARTS BUILDING INNOVATIVE DESIGN Source: Yazaki
CREATIVE ARTS BUILDING INNOVATIVE DESIGN Source: Yazaki
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 17.55 square feet 11,495 square feet Watts/panel 318watts Basis of Design Sunpower 318 Annual Contribution 24,800Btus/square foot/year 902.5 Mbtu/year
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
CREATIVE ARTS BUILDING INNOVATIVE DESIGN
CREATIVE ARTS BUILDING INNOVATIVE DESIGN cooling lighting heating plug Reduced energy by 74%
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
Water No potable for irrigation Efficient water fixtures Rainwater for toilet flushing and cooling tower Only native plants/xeriscape
Energy Water Impacts 80% of the cost of delivering water is energy Source: Sandia National Lab Water
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.
Runoff Solutions Nitrogen fees and savings (future) Wetlands as retention during construction Constructed wetlands and bio-swales Pervious vs. impervious
Minimize: Nitrogen leaving site Nitrogen
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
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 $48,608 10 $8,108 $56,715 11 $8,837 $65,553 12 $9,633 $75,185 13 $10,500 $85,685 Rainwater Potential
Value of rainwater harvesting during drought September and October, 2007 water consumption (peak of drought) 36% of other schools gallons/student/month 31.3 85.8
Monitoring Monitoring provides an interactive graphic interface to teach visitors about sustainable systems Northern Guilford Middle School Innovative Design
Monitoring Rainwater Harvesting Monitoring Systems Display Weather Station Flow Meter Flow Meter Depth Gauge Northern Guilford Middle School Datalogger Innovative Design
Monitoring Chicago Climate Exchange Dataloggers Solar Water Heating Photovoltaics Daylighting Carbon Dioxide RECs Utilities Rainwater Northern Guilford Middle School Innovative Design
Renewable Energy Drivers Carbon Emissions Trading Renewable Energy and Energy Efficiency Portfolio Standard Renewable Energy Certificates
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
North Carolina 3.0% of 2011 sales by 2012 6.0% of 2014 sales by 2015 10.0% of 2017 sales by 2018 12.5% of 2020 sales by 2021 Renewable Energy & Energy Efficiency Portfolio Standard NC Senate Bill 3 2007
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)
REC Market Renewable Energy Certificates Personal home with 4kw PV 5 to 7cents/kwh Progress Energy plus 15 cents/kwh NC Green
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
Site Minimizing clearing and grading Preserving existing pathways and seating Utilizing existing drainage patterns Impact on natural habitat
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)
Goals: Buying Local Encourage county subcontractors and suppliers Regional materials specified (goal = 20%)
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
Thank you! Bae-Won Koh, AIA, LEED AP BD+C Innovative Design 919.832.6303 koh@innovativedesign.net