Ventilation

Case In Point

Energy recovery helps condo towers solve humidity, energy concerns

The Seagate Towers in Delray Beach, FL, is a twin-tower condominium complex built in 1970, offering unobstructed views of the Atlantic Ocean.
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HRVs and ERVs For Classroom Ventilation Applications

Recovering sensible or total heat, wheels or cubes, optional add-ons like fans and filters and assorted sensors ... it takes some homework to specify the right energy-saving recovery ventilator for your school application.
It doesn’t get much more sensitive in HVAC design than designing ventilation systems for the schools that our youth occupy during their learning years.
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CASE IN POINT

Contingency plan keeps school in session during HVAC outage

Afternoon temperatures in Virginia can reach uncomfortable highs on late summer days.
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Lab Results: Big (And Sometimes Fewer) Changes

When you have to individually go verify whether 128 air curtains meant to ensure air balance in the original design’s branch ductwork are still there or not, you’re not having an easy time of it.
One of the worst-performing buildings I’ve had the pleasure to study was a 375,000-sq-ft laboratory building at a Midwest university.
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Case In Point

Fabric duct solution unburdens data center build-outs

Cooling build-outs can be one of the highest operational costs facing data storage facilities.
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Tablet As Building Engineering Tool, Part 4: Operations & Maintenance

Analytics to workorder management, energy audits to light meters — the spectrum of apps for facility engineering tasks continues to get wider and more versatile.
“Collaboration is unavoidable.”
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Commissioning

Unsampled Systems

Choosing not to sample every system can be a gamble, but here are some ways to lower your risk.
Over the past two months, this column has addressed the issue of sampling systems for field functional performance testing
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Restoring The Low Limit For Indoor Relative Humidity

The research is consistent over the years, and the cost of low humidity continues to rise. Even our increasingly computer-oriented lifestyle exacerbates the problem.
Industry leaders realized hundreds of years ago that their processes and machines operate best when the indoor relative humidity is maintained at an optimum level for their process
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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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