Ventilation

HVLS Warehouse Fan: Safety Is A Hot Topic

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These fans (and their controls) take the NFPA exam for impact in a fire setting.
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ASHRAE webcast highlights DOAS

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Registration for ASHRAE’s upcoming webcast, “Dedicated Outdoor Air Systems – A Path to Balancing Energy and IEQ,” opened March 19. The webcast focuses on the departure from conventional HVAC systems and takes place April 19, 2012, from 1 to 4 p.m. EDT.


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Cleanroom Variable Airflow Design

By Vincent A. Sakraida, P.E.
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Appropriately enough, a good variable airflow design accommodates and refines a number of design variables. Particle monitoring strategies, minimum supply air calculation, HVAC sequencing, and space pressurization are just a few stops on the way to spotless performance.
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Centrifugal Fans Installation Guide

By Khalil Kairouz and Dale Price
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Here’s a good reference for facilities, TAB pros, or even commissioning agents on what should be found on site (and how to achieve it in the first place). For install through setup, properly managing connections, bearings, controllers, and vibration risks will create an air of success.
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Case In Point

Library earns LEED, foils complaints with UFAD

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Patrick Baldwin-McCurdy fields daily indoor air temperature requests from employees and students, but Seattle University’s (SU) lead buildings control technician rarely hears HVAC complaints from the college’s new library addition featuring under floor air distribution (UFAD).
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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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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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Linkage lessens load of damper installation

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Andy Cummings of Southland Industries has suffered through his share of cumbersome damper actuator installs. With over 30 years of experience in the sheet metal industry, he knows that the process is not only time-consuming, it can yield disappointing results if the connections are in any way unstable.
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Air-handler system helps symphony recover from flood

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During the first two days of May 2010, a nearly 14-in. downpour fell on “Music City USA” and the Cumberland River burst its banks, causing the worst flood in Nashville’s history. Among the many businesses that suffered terrible losses during the flood was Schermerhorn Symphony Center, completed just four years earlier and home of the Nashville Symphony.
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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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