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Feature Article
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 | Central Chilled Water System Modeling
Using
ever-popular computer modeling, we look at the characteristics of a
1980s-era chilled water system. The exercise points out that you
never really know how good the model is until the real thing is up
and running, but it also entails a thorough look at the systems and
their differences. The author also invites readers to “play along
at home” and compare notes on their model results.
by Nelson Kirby P.E.
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 | Commissioning Hydronic Systems
The
consistency of the process is part of commissioning’s value, but
each project includes different obstacles, installation issues, and
client team backgrounds. To coordinate performance in the piping,
expansion tanks, pumps, and other components of popular hydronics
systems, it takes a sound strategy of documentation, discussion, and
testing. From owner’s requirements to post-occupancy follow-up,
review how to put all the pieces together.
by Bryan W. Welsh P.E., BCA CCCP, LEED® AP
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 | Cooling Contingency Plans: They're Not Just for Emergencies Anymore
Temporary
HVAC may also prove helpful when taking equipment offline for
scheduled maintenance, tackling seasonal loads, or adding redundancy
to existing systems. Just as important, though, is the need to
consider your needs ahead of time to properly select the plans and
partners that can help you steer clear of avoidable problems.
by Michael McGraw
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