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magnetic bearings, silver globes

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.
Richard M. Heim, P.E., LEED AP Paul J. Orzewicz, P.E.
November 1, 2013
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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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blue binary code

The X-Factor: Y Should U Care?

Unprecedented vendor-neutral data has been brought down from the mountain on a digital tablet.
Kevin Dickens, P.E.
September 1, 2013
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Unprecedented vendor-neutral data has been brought down from the mountain on a digital tablet. That’s helpful for data center designers, but applying a little thought and site-specific consideration can reveal the path to wisdom in areas like failure rate, noise, power draw versus temperatures, and more.
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RED BUBBLES, RED BACKGROUND

VRF Heat Pumps In The Real World

Wide temperature swings, submetering deficiencies, bloated carbon footprint … these are but three of the problems tackled in two contrasting projects in the Northwest.
Marcia Karr, P.E.
September 1, 2013
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How is variable refrigerant flow (VRF) working for you? We asked a number of people that question and summarized the findings from two typical facilities here.
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CRAC lead graphic

The Heat Is On But The CRACs Are Off... Now What?

With Hurricane Sandy fresh in our minds, let’s examine the anatomy of a recent outage’s immediate HVAC consequences as a guide toward protecting equipment in the future.
Kevin Dickens, P.E.
March 29, 2013
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October 29 was a Monday. It was also the day that Hurricane Sandy made landfall in New York City. Around 7 p.m., Con Edison shut power off in Lower Manhattan, and it would be sometime Saturday before lights would begin to flicker back on.
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History Colorado
Case In Point

History Colorado protects museum data with VRF zoning system

A new zoning system enabled History Colorado to maintain the precise temperature to keep its treasures safe.
March 29, 2013
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Established in 1879, just three years after Colorado became a state, the Colorado Historical Society had long served as the state’s memory keeper, occupying a number of buildings over the course of its 133-yr history.
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CMS

Sustainable Schools: Teaching By Example

See how Charlotte-Mecklenburg Schools weathered an economic downturn through efficiency, managing to use less energy while adding facilities.
Bryan Steiner
Bryan Steiner
February 26, 2013
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Providing high-quality education for our nation’s children in grades K-12 has never been more important than it is today. The world is changing fast, and we need to provide an educational system that prepares them for this fast paced world in which we live.
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Simmons lead graphic

To Beam or not To Beam?

Peter Simmonds, Ph.D.
January 2, 2013
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While active beams are making great strides toward becoming a standard part of the designer’s toolbox, knowing when to deploy them is a critical judgment. The author focuses his considerable experience with them into a good look at related thermal comfort considerations. Operation and controls, two- and four-pipe systems, and condensation control strategies round out a worthwhile look at how active beams can work for you.


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