HVAC Retrofits

Case In Point

Filtration helps efficiency to soar at Denver Airport

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At 35,000 acres, Denver International Airport (DIA) is the largest airport site in North America, and the second largest in the world. More than 53 million passengers travel through the airport annually.
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Case In Point

New lighting, ventilation help ice arena skate to savings

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Ice arenas represent some of the most energy-intensive buildings a city can own.
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Case In Point

Florida prison escapes higher costs with desuperheaters

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Florida, like most southern states, has an abundance of sunshine throughout the year.
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Trust But Verify

After 40 years and other engineering studies, a large university building still suffered from humidity problems. Our intrepid author dug into the data and the dark corners of the building in pursuit of the culprit — or culprits?
By Douglas Lucht, P.E.
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Sebesta Blomberg was commissioned to study a humidity problem for a 400,000–sq-ft library at a university in the Midwest a few years ago.
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Connecting New Boilers To Old Pipes

Combustion air, ventilation, piping, expansion tanks … with these and other factors affecting performance and safety, the boiler swap is not exactly a plug-and-play situation.
By Ray Wohlfarth
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Designing a commercial boiler replacement where you were not the original designer or installer might have some hidden dangers that could haunt you for years.
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Case In Point

Kansas hospital achieves big city IAQ, efficiency

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When Geary Community Hospital (Junction City, KS) underwent a $34 million expansion, it was promised a cutting-edge HVAC design that would reduce maintenance costs, increase energy efficiency, and provide unprecedented IAQ.
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Building Automation

DDC Or Pneumatic?

Energy savings isn’t the only factor when considering a controls retrofit.
By Paul Ehrlich, P.E.
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Much of our work involves energy studies and retrofits to commercial buildings.
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Are There Hidden Problems In Your Hydronic Boiler Project?

Putting a new boiler in is a lot more complicated than just putting a new boiler in. You’re often taking ownership for any problem, real or potential, anywhere in the hydronics system.
By Ray Wohlfarth
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Designing a commercial boiler replacement where you were not the original designer or installer might have some hidden dangers that could haunt you for years.
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Chiller Retrofit: The Attraction Of Magnetic Bearings

With multiple expansions and projects, a DC-area hospital also had to plan for cooling that could keep up with developing demands and spaces.
By Richard M. Heim, P.E., LEED AP and Paul J. Orzewicz, P.E.
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When the facilities management staff of Mount Vernon Hospital completed an assessment of its central chilled water plant, it became evident that while the original chillers had served the hospital well since its opening in 1975, they were ready for replacement.


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Open for public comment: proposed revisions for existing buildings standard

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Public input is being sought into revision of an ASHRAE/IES standard that addresses retrofit of existing residential and commercial buildings to achieve greater energy efficiency.


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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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