Motors & Drives

New technologies, VFD's, and retrofits play a big part here, with potential for big savings.

ARTICLES

BUILDING AUTOMATION

Impact Of ASHRAE 90.1 On Controls And BAS Design

As states adopt more stringent energy codes, here is what you need to know.
By Paul Ehrlich, P.E.
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In an effort to improve energy efficiency for commercial buildings, ASHRAE, IES, ANSI, and the DOE have been working diligently to increase the stringency of state energy codes.
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Motor Selection HVAC Design

Who actually specified that motor? Did they keep the entire system in mind or were they simply specifying one component at a time? And will that spec require over-speeding the motor?
By Gary Hamilton P.E.
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Often, an HVAC system is designed by the selection of individual components and not by a whole-system approach
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VFD Serial Communications: Which Points Should I Use And Why?

The available LEED credits and most obvious energy-saving possibilities are one thing. The potential for a ripple effect of system-wide savings by deploying VFDs as part of better overall monitoring are another.
By Michael R. Olson
One Comment
Variable frequency drives (VFDs) have become omnipresent in the building automation world.
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Bridging Schools And Eras with HVAC

With literal and figurative tight spaces handled, now new boilers, hydronics, pumping systems, and DDC all work together to impress and serve.
By Paul Johnson P.E., CSI, LEED® AP BD+C
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In today’s world, so-called “high-performance, sustainable” facilities are a dime a dozen. But many of these buildings rely on overly complex mechanical systems to carry out their mission.
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Good Practices For Mechanical Repair Of Electric Motors

By Tom Bishop, P.E.
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Motor problem documentation, grease compatability, fits for bearings … these are just three aspects covered in ANSI/EASA AR100. Whether you maintain your own motors or simply own them and require proper maintenance, understanding the concerns, resources, and recommendations of AR100 will encourage proper repairs and longer service life.


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Critical Care: IAQ For Isolation

By John Bilotta, P.E., LEED® AP and Thomas J. Thomas Ford, LEED AP
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There’s nothing simple about the design, construction, and maintenance of a hospital’s protective environment and airborne infection isolation spaces. However, if you pay careful attention to recommended ventilation and filtration strategies for the rooms and adjacent areas, you can handle the pressure (so to speak) and deliver a healing environment.


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Motors & Drives Rebate Update

By Compiled By ES' Staff
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How often do you get paid to save money through improved system performance? Utilities have their own reasons for seeing you lower your bills, so don’t get started on that next retrofit until you’re sure your organization isn’t leaving money on the table.
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Motors For Use With VFDs

By Steven G. Liescheidt, P.E., CSI-CCS, CCPR
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The questions can pile up quickly when it’s time to specify a motor to pair with a variable drive. The information available sometimes leaves one wondering just as much about the information that is unavailable. Will a decision hold up not only in the actual application but also possibly in court? Wade into compatibility, spec terms, partial loads, and more as we try to get this motor running.
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Calculating Life-Cycle Cost

Detailed calculations can unearth hidden savings.
By Paul Avery
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Whether at work or in our personal lives, we all try to be smart shoppers. We’ll go that extra mile to save a few percent on upfront purchase costs but every so often miss the big picture by not taking total cost of ownership (TCO) into account.
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Case In Point

Financial exchange trades up to modular fan system

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Located in this city’s famous Loop commercial center, the 600-foot-tall Chicago Board of Trade Building (CBOT) houses the world’s oldest futures and options exchange. Until recently, the building also housed a pair of aging built-up systems that were beginning to worry management.
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EVENTS

Test Anxiety? Learn How and When to Test Your Standby Generator

9/25/14
Online
This webinar will discuss generator reliability, testing, and troubleshooting from a practical perspective and make recommendations for a comprehensive inspection and testing program. Read More

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

Multimedia

Videos

Image Galleries

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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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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