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TRANSCRIPT
DESIGNING FOR BETTER
ENERGY OUTCOMES
Vikram Sami LEED BD+C, BEMP
Efficiency v/s Consumption
1903 Model T
15 mpg
2003 Explorer
17 mpg
Federal Center South
Duwamish River Bed
The oxbow is one of the
remaining historic features
of the industrialized
Duwamish River
HistoricToday
Site
Federal Center South B1202 Redevelopment
1202 1201
SITE
Key Design Objectives
• Reflect USACE mission
• Optimize site amenities
• Solidify site and soil conditions
• Assure air quality
• Create a modern 21st century workplace
• Achieve 30% energy reduction
• Re-use 1202 materials
“The Oxbow”
Thomas Cole, 1836
High Performance Green Building
• LEED Gold minimum
• Employ integrated approach to meet sustainability goals
• 30% reduction in energy usage compared to ASHRAE 90.1-2007
• Install advanced meters for electricity, natural gas, and water
• Install solar thermal hot water system (integrated approach determined not cost effective)
• Plan for on-site renewable energy systems
• Reduce indoor potable water use by at least 20%
• Reduce outdoor potable water use by at least 50%
• Manage 95th percentile rain event onsite through infiltration
• Provide occupancy and daylight sensors
• Pre-occupancy flush-out
• Salvage, recycle, or reuse at least 50% of construction and demolition waste
Overall Energy Goals
Competition90.1-2007Baseline
Competition Goal
[27.6 with PV]
The Collaborative Workplace
Flexibility. Efficiency. Daylight.
Unified. Open.
Interaction. Collaboration.
Central and convenient.
No “Silos”.
Optimize Mechanical Systems
Optimize Structural
Builds Community
Optimizing Workplace for Daylight & Views
Original Workplace
Conditions
21st Century Workplace
Daylight Performance & Orientation
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
1 : 327
Flow Cross Section Ratio
Air Duct
Water Pipe
1 : 3271 : 327
Flow Cross Section Ratio
Air Duct
Water Pipe
Decoupled Ventilation and Conditioning
AIR DUCTWATER PIPE
Underfloor Concepts / IAQ
Thermal Storage: Phase Change Material
COOLING TOWERS
PHASE
CHANGE
TANK
HEAT PUMPS
BOILERS
Geotechnical Design
Energy Model Assumptions – Weather v/s Whether
Energy Model Assumptions – Weather v/s Whether
Tracking EUI Performance Federal Center South
• Detailed Analysis of Meter Data
• Plug load much greater than model
• Lighting energy is about right
• Heating and cooling energy is much greater than model
• Pump energy is much greater than model
25.7Metered in 2013
Adjusted for Plug loads and weather
Normalized Performance for 2013
Team Dynamics
• ZGF, Sellen, WSP, KPFF - It takes a village.
• Trust
• Letting ideas marinate
• Communication – with team and client.
• Establishing Value Chain.
