Commercial HVAC

Danfoss Technology Theater schedules spring training sessions on East and West coasts

One-day technology sessions target HVACR contractors, OEMs and consulting specifying engineers
Danfoss, a leading manufacturer of high-efficiency electronic and mechanical components and controls for air-conditioning, heating, refrigeration and motion systems, will bring its Technology Theater to Long Beach, Calif., April 23; Las Vegas, April 24; Boston, May 7; and New York City, May 8.
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Boilers: The Front-Loading Lowdown

The forward march of progress in terms of basic equipment and controls sophistication has made the combination of condensing and non-condensing boilers more attractive than ever. Still, you can’t just grab one of each and expect miracles.
Front-end loading is gaining momentum as a boiler system design strategy, as higher-efficiency condensing boilers replace older boiler technology and system control intelligence continues to improve
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Building Automation

Controls Optimization: No Longer Optional

Updated codes continue the push for better controls work as high performance edges further into the mainstream.
At one time, it might have been acceptable to view controls as a “necessary evil” with little attention given to the details of design including sequences and commissioning
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Motor Selection HVAC Design

Who actually specified that motor? Did they keep the entire system in mind or were they simply specifying one component at a time? And will that spec require over-speeding the motor?
Often, an HVAC system is designed by the selection of individual components and not by a whole-system approach
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Case In Point

Seattle office building achieves net zero energy, water

In the recently completed Bullitt Center office building in Seattle, net zero energy and net zero water initiatives have been combined with the Living Building Challenge.
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Case In Point

Energy meters shine light on power consumption

When MEP engineering firm Glumac set up a new office space on the ground floor of an existing high-rise in Irvine, CA, the company had an ambitious goal even before the move-in — to certify the new 8,762-sq-ft space Platinum under LEED for Commercial Interiors (CI).
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Problems Found In The Field: How Retrocommissioning Can Solve Them

The symptoms are familiar: hot and cold complaints, higher-than-expected costs, etc. Here’s a look at how the retrocommissioning process should work to tackle these and other developments for your facility.
In the last few years, major cities throughout the country have passed new energy code requirements mandating that commercial buildings perform regular retrocommissioning audits.
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Commissioning

Functional Performance Test Sampling

So you’ve decided on your sample size. What next? What happens when a system failure is found?
Last month, this column addressed the need for (and philosophy behind) sample testing certain systems when 100% functional performance testing (FPT) is impractical from a time and/or budget perspective.
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Case In Point

Successful piping solution helps beer go from brew room to tap

The owners of Aardwolf Brewery in Jacksonville, FL, are not taking any chances when it comes to their up-and-coming business. That attitude is what led them to select Aquatherm as an important component for their brewing room.
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VFD Serial Communications: Which Points Should I Use And Why?

The available LEED credits and most obvious energy-saving possibilities are one thing. The potential for a ripple effect of system-wide savings by deploying VFDs as part of better overall monitoring are another.
Variable frequency drives (VFDs) have become omnipresent in the building automation world.
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2014 December

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