Airports
Airports are a uniquely
difficult HVAC systems to control. Large open spaces on the interior,
misplaced cooking and vending areas, and multiple fast changing loads
are just some of the problems faced by the mechanical designer. Also,
loads at unusual times really can complicate these systems. In the
dead of winter, weary travelers are trying to escape the cold and
fly south, so many northern airports have fairly large winter time
loads. In the dead of night, the overnight delivery service terminals
are alive with activity (and cooling loads), when the rest of the
system has no load at all.
Systecon has a wide range of airport jobs across the United States.
Many of the large international airports utilize Systecon's primary/secondary
systems and VariPrime™ systems for energy efficiency. Smaller airports utilize
Systecon combination VariPrime™ systems for cost and space savings, as well as
an optimized energy plant. With Systecon's PLC based controls and high-speed
interfaces, Systecon can quickly adjust to the ever-changing loads of an airport.
Spotlight Job
The Hubert H. Humphrey terminal at the Minneapolis Airport proposed
a particularly challenging design to service a very small night time
load. The main system uses three (3) 1000 Ton chillers for the every
day load, but the small 250 Ton load at night required the use of
a small trim chiller, since the chillers could not part load that
low. Systecon design a Primary/Secondary package with three equal
sized secondary pumps, and then a small secondary pump that runs at
night. However, for increased efficiency, Systecon was able to incorporate
that pump into the afternoon sequence to keep larger pumps from coming
on when just the small pump would do.
Hubert H. Humprey terminal, a package representing the amount of efficiency and flexibility put into each Systecon system.
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