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Motors & Drives

In HVAC VFDs, Is 2-Contactor Bypass Really Better than 3-Contactor Bypass?

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Shane King
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Commercial HVAC

Polypropylene Growing in Popularity for Chiller Engineers

Lance MacNevin P.E.
By its very nature, the engineering profession is based on the constant search for new and better ways of accomplishing a task; however, there also is a well-known human tendency …
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HVAC Design/Construction Process

Warwick Middle School Wins Grand Prize at 27th Annual Future City® Competition

Students at the Lititz, Pennsylvania-based school earned a trip to U.S. Space Camp and $7,500 for its school’s STEM program. …
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Commercial HVAC

ASME BPV Code Set to Incorporate 42 Changes in 2019

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Herb Woerpel
Since 1914, the American Society of Mechanical Engineers’ (ASME’s) Boiler and Pressure Vessel Code (BPVC) has served as a worldwide model for assuring the safety, reliability, and operational efficiency of …
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Cooling & Chillers

Cold Rooms: Filter Driers and Sight Glasses

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Chris Nitz
As seen in the previous articles in this series, each component of a cold room plays a vital role in ensuring optimal performance. In this article, we will look at …
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High-Performance Buildings

Educating Educators About VRF's Versatility

Andrew McKeever P.E.
Today’s school facility directors are being asked to do more with less. With limited budgets, they are pressured to reduce operating expenses while maintaining healthy and comfortable learning environments for …
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Engineered Systems' Top 20 Products of 2018

The hottest products of last year, based on the number of page views on esmagazine.com. …

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