Articles Tagged with ''AHU''

Commissioning

Functional Performance Test Sampling

So you’ve decided on your sample size. What next? What happens when a system failure is found?
By Rebecca Thatcher Ellis, P.E.
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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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Heating Hot Water System Trend Analysis

By Rebecca Thatcher Ellis, P.E.
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Could detecting a manual override suggest deeper problems?
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Single-Zone AHU Trend Analysis – Cooling

By Rebecca Thatcher Ellis, P.E.
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How would you know if you were getting the right result via the wrong sequence of events?
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Single-Zone AHU Trend Analysis

On to a new case after solving a museum mystery …
By Rebecca Thatcher Ellis, P.E.
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In this column, I will describe the “issue” disclosed through analysis of the trend graph included in my January 2012 column. I will also introduce a new system and show its trend graph, leaving it up to the reader to discover the operational “issue” illustrated in the graph. The answer will be given at the start of next month’s column.
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Public Art Gallery AHU Trend Analysis

By Rebecca Thatcher Ellis, P.E.
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The $4,000/yr problem was not on display for, or even noticeable by, visitors and staff.
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Air handler supports the mission at a unique aviation-themed waterpark

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The middle of Oregon’s wine country is an unlikely setting for the campus of a world-class aviation museum, housing the Howard Hughes “Spruce Goose” and many historic aircraft. Even more unlikely is finding an Innovent custom air handler nestled under the fuselage of a B747 airliner, which sits atop the roof of a lively waterpark.
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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
9/25/14 2:00 pm EDT

Test Anxiety? Learn How and When to Test Your Standby Generator

This webinar will discuss generator reliability, testing, and troubleshooting from a practical perspective and make recommendations for a comprehensive inspection and testing program.

Engineered Systems Magazine

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2014 September

Check out the September 2014 issue of Engineered Systems, with features on radiant panels, refrigerant flow systems, and much more!

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Tomorrow's Environment Podcast

This series from longtime columnist and chronic forward-thinker Howard McKew covers a lot of ground -- from retrocommissioning to systems training, on toward checklists for drawings and tips for meeting minutes. Click HERE to be taken to the podcast page!

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