Cooling & Chillers - Articles - Page 65

Malfunction At The Museum

An air handling unit that hasn’t worked since, well, ever. Chillers that have to work more often as a result — and an extra chiller just to attack the affected zone. These were the obvious symptoms, but what was the cause?

Douglas Lucht, P.E.

January 2, 2014

One of my favorite stories is about when I fixed a poorly performing air handling system at a local art museum.

Case In Point

Plastic cooling towers cure hospital’s maintenance, energy cost symptoms

January 2, 2014

It’s no secret that hospitals contain some of the most diverse and demanding environments that require dependable performance of the HVAC system.

Case In Point

Training center’s VRF installation turns heads with linesets, mounting

December 1, 2013

Quietside recently expanded its Forth Worth-based training center, and the distributor hopes that individuals attending classes will learn as much about installation aesthetics as they will about Samsung’s variable refrigerant flow systems.

EDITOR’S NOTE

Can’t-Fail Facilities

From microsite to going live on-site at AHR, we’re putting the spotlight on critical environments.

Robert Beverly

December 1, 2013

Critical facilities … it’s not just about data centers, much like this magazine has evolved to be much more than our traditional dead-tree issue.

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

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.

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

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.

Tomorrow's Environment

Designing A Central Chiller Plant Equipment Room

It turns out that heat stroke, difficult access to equipment, and concussion are all detriments to good maintenance.

Howard McKew, P.E., C.P.E.

September 1, 2013

Here are a few interesting things to keep in mind when designing an equipment room. First, these spaces usually take up 7% of the gross floor space when located within the building or on the roof.

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

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.

Online Exclusive

Using Control Charts To Monitor Room Temperature

Scott Albert Albena Iossifova

June 10, 2013

In this tale of setpoint sleuthing, the team at Slippery Rock University digs hard into the data to discover why and where the old BAS strategy was going wrong. See what the measurements and math turned up for various spaces in terms of culprits and recommendations.