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HVAC Retrofits

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.
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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Editor's Note

A Plan And A Plant

A philosophy plus the usual opportunities made for real savings. What about where you work?
Since energy efficiency is a big part of what this industry pursues on behalf of society at large, I always like to see examples of what companies and firms are doing internally to conserve resources. This month, A.O. Smith celebrated progress on that front at its plant in McBee, SC.
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The (Cost) of DOAS/Radiant

If a design team is lucky, it faces a system choice between “good” and “very good.” However, it’s not always simple to tell which is which.
Engineers are rethinking the standard engineering design paradigm, using lifecycle cost analysis (LCCA) to compare system alternatives that fulfill the same functional requirements but differ in terms of initial and operating costs.
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A Lesson Plan For Sustainability

The Medical University of South Carolina implemented broad energy efficiency im-provements without incurring capital costs.
Today, many state institutions of higher learning and healthcare facilities face reduced budgets, aging infrastructure, and rising energy costs. According to the EPA, colleges and universities spend close to $2 billion each year on energy. These institutions are seeking innovative ways to renew facilities, improve energy efficiency, and reduce energy costs. One option gaining some renewed momentum is the Energy Savings Performance Contract (EPSC).
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The Challenges Of Federal Government Procurement

With a collaborative design approach and the choice to forego networking protocols, this nuclear facility’s controls upgrade points toward an atypical alternate for success.
The procurement process used by the U.S. government (or its contractor) can follow one of several different paths. Usually, an equipment specification is written that contains performance criteria and other requirements. A solicitation is then released and potential sellers competitively bid for the work.
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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
5/13/15 11:00 am EDT

When's & Why's of Fuel Options and Selection for Backup Power

ON DEMAND This presentation will bring listeners up to speed on what the best options are today and in the near future. 

Engineered Systems Magazine

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2015 May

Check out the May issue of ES with the cover story: VRF with Heat Recovery Ventilation In PreK-12 Schools.

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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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