DESIGNING FOR BETTER
ENERGY OUTCOMES
Vikram Sami
LEED BD+C, BEMP
Efficiency v/s Consumption
1903 Model T
2003 Explorer
17 mpg
15 mpg
Federal Center South
Duwamish River Bed
Historic
Today The oxbow is one of the
remaining historic features
of the industrialized
Duwamish River
Site
Federal Center South B1202 Redevelopment
SITE
1202
1201
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
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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
Competition
90.1-2007
Baseline
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
Decoupled Ventilation and Conditioning
Flow Cross Section Ratio
1 : 327
Air Duct
WATER PIPE
Water Pipe
AIR DUCT
Underfloor Concepts / IAQ
Thermal Storage: Phase Change Material
COOLING TOWERS
HEAT PUMPS
PHASE
CHANGE
TANK
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
Normalized Performance for 2013
25.7
Metered in 2013
Adjusted for Plug loads and weather
Team Dynamics
• ZGF, Sellen, WSP,
KPFF - It takes a
village.
• Trust
• Letting ideas marinate
• Communication – with
team and client.
• Establishing Value
Chain.
Vikram Sami
LEED BD+C, BEMP
Vikram.sami@zgf.com
www.zgf.com