Ventilation

From commissioning fans to meeting ASHRAE standards, a repository of insights and projects.

ARTICLES

Infectious Microorganisms Do Not Care About Your Existing Policies

Personnel, common practices, and pathogen behavior all complicate the battle against hospital-acquired infections (HAIs). An overly narrow definition of “airborne” and a habit of confusing comfort with safety may be making things worse, too. Understand the enemy — why less may be more when it comes to room changes, and more may be more regarding relative humidity — to get beyond “business as usual” and knock down the risk to patients.
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ASHRAE 170 Update: Standard Operating Procedure

Air changes in some but not all spaces, duct liner here but not necessarily there, rooftop unit requirements … do the rounds and get a feel for the current condition of ASHRAE Standard 170, Ventilation of Health Care Facilities.
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Control Of Critical Environments

In these applications, reliability and accuracy are of primary importance.
On all projects, the need to provide reliability, accuracy, and safety need to be carefully considered as part of the overall design, but when we start looking at critical environments, these requirements become paramount in the design process.
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CASE IN POINT

ERV replacement brings school utility costs under control

When the school board and town government of Bourne, MA, saw the unusually high utility bills for Bournedale Elementary School, they knew something had to be done.
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Auditorium Overhaul

Since opening in November 1929, Northrop Auditorium has served the University of Minnesota as a venue for music, dance, traveling roadshows, and convocations in its auditorium.
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BUILDING AUTOMATION

Upgrading VAV Boxes

DDC benefits are beyond question, although “repair vs. replace” is a judgment call.
VAV terminal units have been widely used for space comfort conditioning over the last 30 plus years.
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Cool Air Commodity UFAD Systems In High-Density Trading Floors

Here, the pressures on the occupants are exceeded only by the weight of the cooling loads. However, underfloor air proves to be a good fit for an unusual setting. Take stock of the requirements, then look for designs that can pay dividends.
In this digital age, open outcry trading floors have all but been replaced with electronic trading platforms
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Case In Point

ERVs, radiant system supply warmth, fresh air to NY utility

If the little town of Massena, NY, were any further north, it would be in Canada – and it has the climate to prove it.
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Case In Point

Energy system helps school win Battle of the Buildings

Claiborne Elementary School in Baton Rouge, LA, was the winner of the Energy Star National Building Competition: Battle of the Buildings
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COMMISSIONING

Beware Of Single-Mode Balancing Reports

System success depends on a well-rounded TAB procedure.
Proper air and water balancing is critical to HVAC system performance.
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EVENTS

Industry

2015 AHR EXPO

1/26/15
McCormick Place Convention Center
Chicago, IL
United States
The world’s largest trade show exclusively for the heating, ventilation, air conditioning and refrigeration industry Read More

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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!

Engineered Systems Magazine

cover nov 2014

2014 November

Check out the November 2014 issue of Engineered Systems and the cover story: District Chilled Water Systems Design: A Tale Of Two Footprints.

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