10
Energy
According to the U.S. Department of Energy, buildings use 39% of the energy and 74% of the
electricity produced each year in the United States. The Energy & Atmosphere category encourages
a wide variety of energy-wise strategies: commissioning; energy use monitoring; efficient design and
construction; efficient appliances, systems and lighting; the use of renewable and clean sources of
energy, generated on-site or off-site; and other innovative measures.
– LEED 2009
| Energy Efficient Mechanical Systems | Energy Efficient Lighting | Energy Saving Equipment |
| On-Site Renewable Energy | Measurement & Verification | Refrigerant Management |
| Energy Efficient Practices & Procedures |
11
SUSTAINABILITY PROJECTS
Profile Sheet
Variable Frequency Drives
Project Overview
Per the U.S Department of Energy, about 50% of U.S. electricity for
businesses flows through motors. To help reduce its energy footprint,
CLT is constantly working on phasing out all single speed drives and
replacing them with variable frequency drives (VFD’s). A VFD is a system
for controlling the rotational speed of an alternating current electric motor
by controlling the frequency of the electrical power supplied to the motor.
VFD’s are widely used in ventilation systems for large buildings to save
energy by allowing the volume of air moved to match the system demand.
They allow the Airport to program the air handling unit motors to slow
down when the space setpoint is met. The traditional energy inefficient
designs allowed the motors to run at 1800 RPM’s with the inlet vanes
on the fans to regulate the air flow.
Fast Facts
Start Date.............................................................................................. 2005
Completion Date....................................................................... Ongoing
Updated...................................................................................... 7/10/2012
Location......................................................................................... Terminal
Environmental Benefit.................................... Energy use reduction
Industry Standards
LEED.................................................................. 2009 O&M - EA Credit 1
IgCC....................................................................................... Section 606.6
SAM................................................................................................. O&M 3.4
IECC.............................................................................. Section C403.2.10
Project Notes
Manufacturer................................................................................ Yaskawa
Use........................................................................................................... 24/7
Benefits of VFD’s
• Energy savings
• Extended equipment life
• Reduced maintenance
• Tighter process control
Global Initiative #: 20
Focus Area:
12
CLT’s Commitment to Sustainability: Identify and pursue fiscally responsible practices and strategies that minimize environmental impacts to achieve
a sustainable enterprise for the benefit of the region.
5501 Josh Birmingham Parkway
Charlotte, NC 28208
moving towards a sustainable future
P.O. Box 19066
Charlotte, NC 28219
P 704.359.4000
F 704.359.4030
T 1.800.FLY.CDIA
cltairport.com
12
SUSTAINABILITY PROJECTS
Profile Sheet
Metasys Software
Project Overview
There was a need to trend building energy usage and the Airport
suggested that Johnson Controls, a diversified technology firm, offer
CLT monitoring software to help achieve this goal. The result was the
installation of the ADX server and Metasys v 6.0. This ADX server can
receive wireless signals from devices, controller and temp sensors which
will allow for less expensive office upfits. The data storage on the server
allows for endless point monitoring for a long term history of space
conditions. The Airport can also issue unique passwords in for each
operator with varying levels of system access.
Benefits of BAS & Monitoring
• Good control of internal comfort conditions
• Increased staff productivity
• Effective monitoring and targeting of energy consumption
• Effective response to HVAC-related complaints
• Central or remote control and monitoring of building
• Increased level of comfort and time saving
• Ease of information availability problem
• Early detection of problems
• More satisfied occupants
Fast Facts
Start Date................................................................................... May 2011
Completion Date................................................ July 2011 & Ongoing
Updated..................................................................................... 7/10/2012
Location................................................................................ Concourse A
Environmental Benefit........................................ Reduce energy use
Industry Standards
LEED............................................................... 2009 O&M - EA Credit 3.1
IgCC.................................................................................... Section 603.2.1
SAM.............................................................................................. O&M 3.6.1
IECC.................................................................................... Not Applicable
Project Notes
Provider.......................................................................................... Metasys
Use........................................................................................................... 24/7
.
Global Initiative #: 24
Focus Area:
6
CLT’s Commitment to Sustainability: Identify and pursue fiscally responsible practices and strategies that minimize environmental impacts to achieve
a sustainable enterprise for the benefit of the region.
5501 Josh Birmingham Parkway
Charlotte, NC 28208
moving towards a sustainable future
P.O. Box 19066
Charlotte, NC 28219
P 704.359.4000
F 704.359.4030
T 1.800.FLY.CDIA
cltairport.com
13
SUSTAINABILITY PROJECTS
Profile Sheet
High Efficiency Chillers
Project Overview
With the expansion of E-Concourse, the Airport decided to incorporate
energy efficient centrifugal chillers. The facilities maintenance staff
collaborated with the design firm to specify centrifugal chillers instead
of traditional heat recovery chillers. A centrifugal chiller utilizes the vapor
compression cycle to chill water and reject the heat collected from the
chilled water and the heat from the compressor to a second water loop
cooled by a cooling tower. A standard heat recovery chiller will consume
0.7 KW/ton, yet only provide 110 degree water for reheat purposes and
manage the load by opening and closing the inlet vane to load and unload
the machine. The new centrifugal chillers will use variable frequency
drives (VFD’s) to load and unload the machine as opposed to an inlet
vane. This allows for further energy savings. CLT realized that chiller
efficiency improvement offers a substantial and cost-effective means to
reduce greenhouse gas emissions for the largest use of electricity in
commercial buildings. The refrigerant selection also influences both
the attainable efficiency and the direct action of releases as
greenhouse gases. The new chillers will operate on R-134a, an
environmentally friendly refrigerant.
Fast Facts
Start Date................................................................................... June 2011
Completion Date.............................................................. October 2011
Updated..................................................................................... 7/10/2012
Location............................................................................... East Terminal
Environmental Benefit......................................... R-134A Refrigerant
Industry Standards
LEED...................................................................... 2009 NC - EA Credit 4
IgCC....................................................................................... Section 606.1
SAM.................................................................................................. D&C 4.4
IECC....................................................................................... Section C 403
Project Notes
Provider............................................................. York/Johnson Controls
Total System Size............................................................ 0.3KW per ton
....
.
CLT Centrifugal Chillers
• Operate at 0.3 KW/ton cooling capacity
• Contain VFD’s
• Use R-134a refrigerant
• Low maintenance
• Reliability
• Quiet operation
Global Initiative #: 20
Focus Area:
4
CLT’s Commitment to Sustainability: Identify and pursue fiscally responsible practices and strategies that minimize environmental impacts to achieve
a sustainable enterprise for the benefit of the region.
5501 Josh Birmingham Parkway
Charlotte, NC 28208
moving towards a sustainable future
P.O. Box 19066
Charlotte, NC 28219
P 704.359.4000
F 704.359.4030
T 1.800.FLY.CDIA
cltairport.com
14
SUSTAINABILITY PROJECTS
Profile Sheet
Rooftop Solar Project
Project Overview
As part of CLT’s efforts to become more energy independent and
sustainable, a rooftop Solar Photovoltaic (PV) system was installed on
the roof of the CLT Center, which houses the bulk of the Aviation
Department’s operations and employees. Photovoltaics are a solar power
technology that convert sunlight into electricity that can be used to
power a building. This particular system generates enough electricity
to power 30-40% of the CLT Center.
• Installed 10/1/2010
• Started generating power on 12/29/2010
• Designed, funded, built and commissioned by NARENCO
• The panels generate power (during daylight hours) that feeds into a grid
operated by Duke Energy.
• NARENCO owns the solar panels for 20 years, allowing CLT to save on
installation and maintenance costs.
• The panels are leased to CLT for 20 years.
• NARENCO is receiving a federal tax credit.
• In exchange, CLT is receiving renewable energy credits (REC).
• CLT is selling these REC’s to Duke Energy.
• CLT has the option to purchase the PV system at its depreciated value at
years 6, 10, 15, or 20 .
• The panels’ estimated life expectancy is a little more than 25 years.
• If the project is successful, CLT may expand to other solar projects.
• Future solar projects may include the top of concourses, parking decks
and the remainder of CLT Center’s rooftop.
• For educational purposes, digital display monitors will be placed in the
terminal with current energy production of the panels for passengers
to view.
• Denver, San Francisco, Long Beach, Oakland and Austin-Bergstrom airports
utilize solar technology.
Fast Facts
Start Date................................................................................... 10/1/2010
Completion Date................................................................... 12/29/2010
Updated...................................................................................... 7/10/2012
Location.................................................................................... CLT Center
Environmental Benefit............................. 312 tons of CO2 avoided
Industry Standards
LEED.................................................................. 2009 O&M - EA Credit 4
IgCC....................................................................................... Section 610.2
SAM................................................................................................ O&M 3.7
IECC.................................................................................... Section C406.4
Project Notes
Provider...................................................................................... NARENCO
Total System Size.......................................................................... 235 KW
Total Number of Panels................................. 1330, 230-Watt Panels
Mounting Type........................................................................... Roof Top
Total System Square Footage........................................ 38,000 Sq.Ft.
Annual Power Production.......................................... 395 MWh/Year
Homes that can be powered each year......................................... 60
Cars off the road equivalent....................................................... 13,825
Global Initiative #: 23
Focus Area:
2
CLT’s Commitment to Sustainability: Identify and pursue fiscally responsible practices and strategies that minimize environmental impacts to achieve
a sustainable enterprise for the benefit of the region.
5501 Josh Birmingham Parkway
Charlotte, NC 28208
moving towards a sustainable future
P.O. Box 19066
Charlotte, NC 28219
P 704.359.4000
F 704.359.4030
T 1.800.FLY.CDIA
cltairport.com