januaryfebruary2021 - 21

HVAC & BUILDING CONTROLS
that they are never truly unoccupied
a nd ex per ience t remendous
f luct uat ion s i n occupa nc y a s
passengers board and disembark from
their f lights. In terms of structure,
terminals often have tall ceilings
with substantial unoccupied vertical
space. These distinct circumstances
create an environment that requires
nimbler HVAC systems, notably
Variable Air Volume (VAV) systems,
to react to these large f luxes of people
by modulating the amount of outside

a taxiway and runway from jet fumes
and then you're combining that with
the busyness of an indoor terminal
with lots of transient people, which of
course, lots of people requires lots of
outside air. So, you have to be able to
introduce that outside air, mitigating
with the fumes issue you get from the
taxiways and runways, " Perrott said.
C om bi ned t hen w it h t he
numerous large, open spaces of
airports and the multitude of different
facilities in an airport, such as retail

complicating the balancing act.
" It's just something to try and
figure out that balancing point of
bringing in the right amount of
outdoor air, but not wasting the
energy to do so, " Conlan said. " In
the age of COVID, it even changes
further because while airports are
traditionally designed to keep the
passengers and the people comfortable,
out of the elements and not having
the jet fuel smells; when you add
COVID into the mix, you're now

Top, a properly installed filter.
Left, a typical airport HVAC.
HANSON PROFESSIONAL SERVICES INC. / ARORA ENGINEERS, INC.

air and total supply air to the occupied
spaces, " said David Marsh, practice
lead of mechanical engineering,
Arora Engineers Inc.
Another factor airport systems
have to contend with is bringing in
outside air without the pollution of
the ramp, as Bradley Perrott, facilities
practice lead, Hanson Professional
Services Inc., described.
" You're taking the less-than-ideal
outdoor air quality that you get with

and restaurants with each requiring
trying to operate that for safety like
differing ventilation and heating and
you would a hospital patient room or
cooling loads, airport HVAC systems
a laboratory building. "
become some of the most complex of
their kind.
Making Changes
It's all about maintaining the " Airports as well as other buildings are
right balance said Wade Conlan, looking to make an immediate impact
commissioning and energy discipline
regarding HVAC renovations, " Jeff
manager, Hanson Professiona l
Farley, senior mechanical engineer
Services Inc. and voting member
at TDIndustries Inc., said. " Filter
changeouts may be happening more
of the ASHRAE Epidemic Task
frequently and ultra-violet germicidal
Force, with now the virus further

JANUARY/FEBRUARY 2021 \ AVIATIONPROS.COM / 21


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januaryfebruary2021

Table of Contents for the Digital Edition of januaryfebruary2021

Inside the Fence: Genesis by Necessity
Industry Update
How General Aviation is Helping Support Commercial Aviation and Prop Up Tourism in Specific Markets, Amid COVID-19 Resurgences
Pioneering PCAs in Salt Lake City
FBOs in a Post-Pandemic World
Clearing the Air on HVAC
Totally Boggus: Catch the Plane!
Legal Matters: Is Your Airport Leasehold Taxable?
A Clean and Clear Future
Passenger Experience in the Time of COVID-19
Don't Leave Hygiene Up in the Air
Airport Guru: Airport Development 101: Will an Investment be Profitable?
Product Profile: Stress Test
januaryfebruary2021 - 1
januaryfebruary2021 - 2
januaryfebruary2021 - 3
januaryfebruary2021 - 4
januaryfebruary2021 - Inside the Fence: Genesis by Necessity
januaryfebruary2021 - Industry Update
januaryfebruary2021 - 7
januaryfebruary2021 - 8
januaryfebruary2021 - 9
januaryfebruary2021 - How General Aviation is Helping Support Commercial Aviation and Prop Up Tourism in Specific Markets, Amid COVID-19 Resurgences
januaryfebruary2021 - 11
januaryfebruary2021 - 12
januaryfebruary2021 - 13
januaryfebruary2021 - Pioneering PCAs in Salt Lake City
januaryfebruary2021 - 15
januaryfebruary2021 - 16
januaryfebruary2021 - 17
januaryfebruary2021 - FBOs in a Post-Pandemic World
januaryfebruary2021 - 19
januaryfebruary2021 - Clearing the Air on HVAC
januaryfebruary2021 - 21
januaryfebruary2021 - 22
januaryfebruary2021 - 23
januaryfebruary2021 - 24
januaryfebruary2021 - Totally Boggus: Catch the Plane!
januaryfebruary2021 - Legal Matters: Is Your Airport Leasehold Taxable?
januaryfebruary2021 - 27
januaryfebruary2021 - A Clean and Clear Future
januaryfebruary2021 - 29
januaryfebruary2021 - 30
januaryfebruary2021 - 31
januaryfebruary2021 - 32
januaryfebruary2021 - 33
januaryfebruary2021 - Passenger Experience in the Time of COVID-19
januaryfebruary2021 - 35
januaryfebruary2021 - Don't Leave Hygiene Up in the Air
januaryfebruary2021 - 37
januaryfebruary2021 - Airport Guru: Airport Development 101: Will an Investment be Profitable?
januaryfebruary2021 - 39
januaryfebruary2021 - Product Profile: Stress Test
januaryfebruary2021 - 41
januaryfebruary2021 - 42
januaryfebruary2021 - 43
januaryfebruary2021 - 44
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