generators for the control tower and life
safety features, but if grid power fails,
Energy is one of an airport’s largest
expenses, so increasing efficiency and
improving reliability is one of the most
important bottom lines to control. An
energy services program should focus
on all aspects of facilities and operations
and can consist of energy conservation measures ranging from HVAC and
lighting updates, innovative control
systems and equipment replacement to
combined heat and power (CHP) generation, renewable technologies and process
optimization. Onsite CHP systems are
gaining interest from local, state and federal agencies.
CASE STUDY: LOS ANGELES
Los Angeles International currently
is installing a new CHP system using
combustion turbine generators.
Exhaust will be used to produce
steam to drive steam turbine chillers for terminal
cooling or to power a steam turbine generator to
provide power to meet critical airport loads. The
CHP system will have efficiencies greater than
75 percent compared to a typical central plant
fed from the grid. The U.S. Department of Energy
considers CHP “one of the most promising
options in the U.S. energy efficiency portfolio”
because of its low greenhouse gas emissions,
high efficiency, potential for nationwide
implementation and ability to relieve increasing
demand on the grid.
Commissioning of the building energy systems is imperative for high-performing facilities.
Implementing a commissioning process as part
of design and construction provides invaluable
quality control measures and additional expert
eyes and ears to verify that building systems and
controls operate as intended. Commissioning
also provides training for future operators.
Designers and constructors impact how buildings are built, but facility operators and maintenance personnel have the largest impact on
building performance over time.
In the digital age, airports are increasingly dependent
upon electricity. All have backup diesel engine
CASE STUDY: DENVER INTERNATIONAL
The maintenance and engineering staff at Denver
International was faced with replacing more than
180 hot and chilled water circulating pumps. An
evaluation indicated that by replacing the existing
control valves with pressure independent valves,
the pumps could be eliminated and the system
would function using the main distribution pumps
at each concourse. Energy savings are expected to
be about $400,000 per year.
Technology-based facilities or data centers may
be the largest energy consumers in a building,
or most energy intensive stand-alone facilities.
Advances are underway to widen the operating