Transcript ASHRAE Headquarters

ASHRAE
Headquarters
Succeeding in Sustainability
40% of all energy in the
United States is used by
buildings.
Only 2% of building
stock is built new
each year.
The greatest opportunity to change
energy consumption in the built
environment is through modification
of existing buildings.
In
ASHRAE
2005, ASHRAE
succeeded
formed
in creating
a plan to
a healthy,
renew its
productive
headquarters
and
sustainable
building in Atlanta.
building,The
ensuring
project
a sustainability
was completed
showcase
in June
for years
2008:
to come.
– 34,000 ft2
– Total cost of 6.2 million
Building Excellence
– A- in As Designed category of ASHRAE’s Building
Energy Quotient program
– Recipient of ENERGY STAR®
– Awarded LEED Platinum in New Construction in
Version 2.2
Goals of Renewal
 Deliver a healthy and
productive workplace
 Demonstrate commitment
to sustainability
 Create a living lab
 Provide a learning center
Commitment
to Sustainability
The many resource-conserving features of the
ASHRAE Headquarters building resulted in tremendous
savings:
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Total annual water consumption has been reduced by 67%
A 54% reduction in site energy use intensity
Thermal comfort satisfaction improved from 18% to 33%
Indoor air quality satisfaction improved from 26% to 77%
Energy
Efficiency
As part of the “living lab” concept, the
building uses three separate HVAC systems
The first floor is conditioned for heating and cooling using a
variable refrigerant flow (VRF) system with heat recovery.
The system includes five inverter driven, outdoor DX heat
pumps, three ductless fan coil units, twenty-one branch
selector boxes, and twenty-two ducted fan coil units operating
on HFC 410A refrigerant (System Capacity 32 tons (113 KW)
total).
Energy
Efficiency
As part of the “living lab” concept, the
building uses three separate HVAC systems
The second level is conditioned using fourteen two-stage,
27-EER variable-speed ground-source heat pumps, with
a geothermal field of 12 400-foot-deep wells, and a
closed-loop piping system.
Energy
Efficiency
As part of the “living lab” concept, the
building uses three separate HVAC systems
The pump shown is part
of the ground source heat
pump system and it helps
to harness energy stored
near the surface of the
earth to provide highefficiency heating and
cooling for the 14
individual zones on the
second level.
Energy
As part of the “living lab” concept, the
Efficiency building uses three separate HVAC systems
The third system is a dedicated outdoor air system (DOAS),
which provides 6,000 cubic feet per minute (CFM) of outside air
to the first and second floors for ventilation (30% more than
required) and incorporates dual stage air-to-air heat recovery
desiccant heat wheels, variable speed supply and exhaust fans,
DX cooling coils and MERV 13 air filters
Energy
Efficiency
Local and centralized control hardware
precisely manage the conditioned space
allowing for total comfort, energy efficiency,
and remote monitoring
A Web-based direct digital
control (DDC) system
provides integrated control
of HVAC equipment from
multiple manufacturers,
maintaining a comfortable,
healthful and energy
efficient working
environment.
Energy
Efficiency
High-efficiency lighting lowers lighting power
use by 25 to 35% and sensors automatically
adjust usage based on occupancy
The parking lot luminaires were
updated to reduce light pollution
emanating from the site.
Energy
Efficiency
ASHRAE has extensively isolated load types
and sub-metered the building so the
information can be monitored and used in the
future.
The Building Automation
System (BAS) provides a
user interface for the living
lab project, allowing
researchers around the world
to monitor performance and
extract data for research
purposes.
ASHRAE used the enhanced commissioning process from
ASHRAE Guideline 0 to ensure that the building performs
according to its design.
Renewable Energy
A 20-kilowatt photovoltaic
solar panel array on the
roof produces electricity
during daylight hours,
which in turn is sold to
the local electrical utility
at a premium price.
If this power was instead
used to power the
building, it is estimated it
would offset 8% of the
total building load.
Water Efficiency
• Annual water consumption has been reduced by 64%
by using high-efficiency low-flow toilets, waterless
urinals and solar water preheat of domestic hot water.
• The landscaping has
also been configured to
eliminate the need for
irrigation.
Indoor
Environmental Quality
Building envelope
enhancements
allow for increased
daylighting
throughout the
building
Indoor
Environmental Quality
The building employs low-emitting materials, such as
furnishings and carpet, throughout to reduce indoor air
contaminants that are odorous, irritating or harmful to the
comfort and well-being of occupants.
Indoor
Environmental Quality
A comfortable thermal
environment that supports
the productivity and wellbeing of all building
occupants is provided by
adhering to the
requirements of ASHRAE
Standard 55.
Reduced
Environmental Impact
ASHRAE has increased the amount of vegetated open space by
45% above local code requirement to conserve valuable water,
reduce run-off, reduce heat island effects and help provide a
more attractive site.
Reduced
Environmental Impact
The heat island effect from the roof and parking lot have been
reduced using a cool white reflective roof membrane with a
solar reflectance index (SRI) of 78 and a protective crust over
half of the parking lot pavement with a SRI of 32.
Reduced
Environmental Impact
Site runoff has been reduced by 34% and the rate of runoff by
30%. Runoff water is reduced by the green roof areas and
naturally filtered of pollutants a bioswale system, which
gradually releases water back into the storm water system
to prevent overload.
Reduced
Environmental Impact
ASHRAE is demonstrating how to extend the lifecycle of
existing buildings, conserve resources, and reduce waste by
retaining more than 90% of the original structure and envelope.
Reduced
Environmental Impact
ASHRAE protected the environment during the
renovation process:
– Diverted more than 90% of the construction waste
away from landfills and incinerators
– 22% of total value of project materials made from
recycled content
– Selected refrigerants and HVAC&R systems to
minimize ozone depletion and global warming
Transportation
ASHRAE is actively
encouraging alternative
and fuel-efficient
transportation means for
its staff and guests:
– on-site bike storage,
showers and changing
rooms
– dedicated parking for lowemitting & fuel-efficient
vehicles
– more than 5% of parking
spaces reserved for
carpools
ASHRAE
Guidance Followed
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Energy efficiency: Standard 90.1-2004
Thermal comfort: Standard 55-2004
Ventilation: Standard 62.1-2004
Energy in existing buildings: Standard 100-2006
Commissioning: Guideline 0-2005
HVAC&R system commissioning: Guideline 1-2006
Thank You!
ASHRAE would like to thank the following companies and individuals
who helped make this project possible
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ASHRAE Foundation
Automated Logic Corp.
ClimateMaster
Daikin
Georgia Power/Southern
Company
• Trane
• Aircuity
• Interface FLOR
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Mark Brandli, design
principal/Richard Wittshiebe Hand
Commissioning & Green Building
Solutions (CxGBS) Inc.
Dynamic Air Quality Solutions
EBTRON Inc.
Bill and Margaret Harrison
Northwrite
PolyCon
Thermal Gas Systems Inc.
U.S. Green Building Council