Sustainable Transit Facilities · ENERGY STAR and LEED EBOM •ENERGY STAR : energy bills,...
Transcript of Sustainable Transit Facilities · ENERGY STAR and LEED EBOM •ENERGY STAR : energy bills,...
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Sustainable Transit Facilities
Renée Azerbegi, CEM, LEED AP President, Ambient Energy
Tom Hootman, AIA, LEED AP Director of Sustainability, RNL
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Agenda
1. What Makes Transit Facilities Unique?
2. What Makes Transit Facilities Green?
3. Case Studies
4. Green Transit Best Practices
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What makes transit facilities unique?
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Sustainable Communities
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Large and Remote Sites Urban Heat Island, Access to Public Transit, Stormwater
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Industrial Building Construction Wall and Roof R–Values, Overhead Doors, Durability
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Indoor Environmental Quality Air Quality, Daylighting
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Energy Historically Daylit
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Energy Daylighting
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Operations Fueling Stations, Fuel Tanks, Wash Bays
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Energy Office vs. Maintenance Building Use
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Workplace A place for people - not just equipment
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Transit Facility Stats
Transportation LEED Certified Projects (April 2010)
LEED-NC 435
LEED-CS 29
LEED-EB 20
LEED-CI 10
Total 494 (out of 28,062)
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Transit Facility Stats
California LEED Certified Projects
Gardena Transit Administration Facility Gardena Municipal Bus Lines, Gardena, LEED NC Silver
MacArthur BART Transit Village MTCP, LLC, Oakland, LEED ND 1.0 Pilot Gold
Santa Clarita Transit Maintenance Facility, City of Santa Clarita, Santa Clarita, LEED NC Gold
MTA Transportation Building DI, Los Angeles County Metropolitan, El Monte, LEED NC Gold
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What makes transit facilities green?
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ENVI
RO
NM
ENT
Triple Bottom Line
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Site Planning
Green Building
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Design for One Earth
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Energy
Carbon
Water
Materials / Waste
Establish Performance Based Targets
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Sustainable Sites
Water Efficiency
Energy & Atmosphere
Materials & Resources
Indoor Environmental Quality
Innovation in Design
Regional Priority
LEED Green Building Rating System
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LEED Green Building Rating System
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LEED Green Building Rating System
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1. Holistic Approach
2. Performance Based
3. Integrated Process
4. Third Party Verified
LEED Green Building Rating System
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California Standards Title 24, CALGreen
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Procurement Methods New Buildings, Major Renovations
Integrate the Team •Performance Based Design Build •Integrated Project Delivery (IPD) •Award Incentives
Set Performance Objectives •LEED •Energy target •Other green building targets
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Existing Facilities Energy Audits / Retrocommissioning
•Walk thru audit •Detailed audit •Retro or Re-commissioning •Sustainability audit
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Existing Facilities Performance Contracting
Energy savings typically 15 – 30%
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Existing Facilities ENERGY STAR and LEED EBOM
•ENERGY STAR : energy bills, ventilation, lighting •LEED-EBOM: utility bills, policies, procedures, maintenance, grounds, janitorial
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Incentives www.dsireusa.org
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ARRA Opportunities www.recovery.ca.gov
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Case Studies
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VVTA Hesperia, CA
Bus Administration, Operations, and Maintenance Facility
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VVTA Hesperia, CA
•Pursuing two LEED Golds •17% / 37% Energy cost savings in Admin vs Maint •40%+ indoor water savings •50%+ outdoor water savings •90%+ views
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VVTA Hesperia, CA
•Underfloor air distribution •1 MW photovoltaic system •Stormwater management •Native and xeric plants
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Central Platte Campus Denver, CO
Public Works Fleet Maintenance facility and Office/Warehouse
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Central Platte Campus Denver, CO
•Pursuing 2 LEED Golds •35% / 41%+energy cost savings in Shop-Warehouse vs Fleet-Maint. •40%/50%+ indoor/outdoor water usage savings •95%+ construction waste recycling
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Central Platte Campus Denver, CO
•Photovoltaics through a PPA •Sawtooth roof design •Evaporative cooling (no refrigerants) •Heat recovery
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TRANSPO South Bend, IN
Bus Administration, Operations, and Maintenance Facility
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TRANSPO South Bend, IN
•Pursuing LEED Platinum •28% energy savings •30%+ water use reduction •75%+ construction waste diversion
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TRANSPO South Bend, IN
•Ground source heat pumps •Radiant slabs •Brownfield remediation •Bioremediation of stormwater •Super insulated envelope
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East Valley Bus Maintenance Tempe, AZ
Bus Operations, and Maintenance Facility
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East Valley Bus Maintenance Tempe, AZ
•LEED-NC Gold (Office and Maintenance)
•98% Construction waste diversion •53% Energy savings •30%+ Water use reduction
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East Valley Bus Maintenance Tempe, AZ
•Underfloor air delivery •Daylighting /clerestories/sensors •Dual flush WC/waterless urinals •Operable windows •Bus parking shade canopies
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LA Metro Division 13 Los Angeles, CA
Bus Operations, and Maintenance Facility
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LA Metro Division 13 Los Angeles, CA
•Pursuing LEED Gold •50%+ Irrigation water reduction •30%+ water use reduction •High indoor environmental quality
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LA Metro Division 13 Los Angeles, CA
•Green roof •Rainwater harvesting •Public transportation access •BIPV on façade •Public use green fueling station
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El Monte Station El Monte, CA
Bus Station
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El Monte Station El Monte, CA
•Pursuing LEED-NC Gold •57% water use reduction •21% energy savings •2% On-site Renewable Energy
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El Monte Station El Monte, CA
•Maximize open space (25%) •Water efficient landscaping •Vegetated walls for sound control •Cool roofs / High albedo paving
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Green Transit Best Practices
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Urban Heat Island Cool Roofs, High Albedo Paving, Shading, Vegetation
Cool Roofs
Shade Canopies
Shade Trees
Pervious Paving
High Albedo Paving
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Stormwater Management Bioswales, Constructed Wetlands, On-site Retention
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Stormwater Management Rainwater Harvest, Green Roof, Pervious Paving
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Water Low Flow Fixtures, Water Re-use, Wash Bays
Source: Interclean Source: Caroma
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•Recycled Content •Regional Material •Certified Wood •Low VOC finishes
Green Materials Recycled, Regional. Low Emitting, Certified Wood
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Building Materials Research
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Energy California’s Climate
•Diversity of climate conditions •Heating and cooling systems •Building envelope strategies
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Average Site EUI
(kBtu/sf/year)
Vehicle Maintenance Buildings 27 to 101
Office Buildings 58 to 143
Storage Buildings 16 to 60
Source: National Renewable Energy Laboratory
Energy Energy Usage Index
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Energy Setting an Energy Goal
•Energy Star •2030 Challenge
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Energy Office vs. Maintenance Building Use
Admin/Operations Building vs. Maintenance Building 65 kBtu/sf/yr 120 kBtu/sf/yr
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Energy Energy Modeling
•Select lowest life cycle measures •Optimize building prior to building footprint •Select major mechanical systems
EEM Initial Cost Life Cycle Cost (PV) % ChangeE1 Daylighting Based Lighting Control $12,450 $1,015,998 10.4%E2 Occupancy Based Lighting Control $9,000 $1,081,891 4.6%M1 Evaporative Cooling $20,400 $1,090,746 3.9%Design Case $0 $1,134,475 0.0%A1d Shading: Boardroom $4,320 $1,138,414 -0.3%A2a Wall Insulation $11,512 $1,138,562 -0.4%A2b Roof Insulation $26,406 $1,154,168 -1.7%A3a Glazing: Solarban 70 XL $22,995 $1,154,607 -1.8%
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Energy Building Envelope and Insulation
Source: Thermomass
Wall Type Total R-Value
Baseline steel framed 11.9
Insulated stud wall 19.1
Un-insulated tilt up wall 1.7
Insulated tilt up wall 13.1
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Energy Daylighting
Source: Solatube Source: Sunoptics
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Energy Daylighting, Lighting and Controls
•Glazed bay doors •Photosensors •Multiple switches per bay •Glazing per orientation and height
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Energy Daylighting
Skylights or Solatubes Clerestory / Roof Monitors
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Energy Daylighting Modeling
•Optimize glazing type •Optimize shading devices •Optimize photosensors •Optimize daylight strategy
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Energy HVAC
•Destratification fans •Air quality sensors •Radiant heating /condensing boilers •Heat recovery •Evaporative cooling
destratification fans
solar heating canada
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Energy Fuels
•Low emitting alt fuel vehicles •CNG energy management •Biobased fuels •Parking for alt vehicles
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Energy Maintenance Processes
•Highest efficient motors •Variable speed drives •Scheduling equipment
Maintenance Design Group
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Source: Solarwall
Renewable Energy Transpired Solar Collector
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Renewable Energy Photovoltaic
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Renewable Energy Renewable Energy Analysis
•Select renewables appropriate for the load •Identify alt. funding sources •Select the lowest life cycle
0
20004000
6000
800010000
12000
1400016000
18000
SJIA Terminal A BaseCase SJIA Terminal A Renewables
Electric (Mbtu) Natural Gas (Mbtu) Other Fuel (Mbtu)Photovoltaics (Mbtu) Wind (Mbtu) Solar Vent Preheat (Mbtu)Solar Themal (Mbtu) Biomass (Mbtu) Daylighting (Mbtu)
"closed loop" evacuated tube solar water heating schematic with tank
"recirculation loop" evacuated tube solar water heating schematic without tank
Initial Cost ($) $424,981 $148,677 Utility Incentive ($) 0 0 Tax Credit ($) 0 0 Cost to SJIA after Incentives ($) $424,981 $148,677 Utility Cost Savings ($/year) $44,653.00 $17,918.75 O&M Cost ($/year) $1,062.45 $371.69 Internal Rate of Return 10.26% 11.80% Simple Payback Period
9.7 8.5
Life Cycle Savings $78,262.00 $156,817.24 Savings to Investment Ratio
1.1 2.1
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ZEBs produce as much energy as they consume over the course of a year.
=
Zero Energy Buildings Low Energy and Renewable Energy
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Thank You!
Renée Azerbegi, CEM, LEED AP President, Ambient Energy
Tom Hootman, AIA, LEED AP Director of Sustainability, RNL
www.rnldesign.com
www.ambient-e.com