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Articles by Stanley A. Mumma PH.D., P

Terminal Equipment With DOAS: Series vs. Parallel

While there’s no disagreement that DOAS systems require some supplemental equipment to handle remaining sensible cooling loads, a couple of schools of thought have evolved regarding the best way to arrange certain terminal equipment within the overall system. Can this be a simple misunderstanding about one option’s ideal configuration? Can a 2,700% difference in power consumption really be a part of this discussion? Read on to find out.

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Web Exclusive: DOAS & Desiccants

This pairing can represent a great strategy - if you choose your tactics wisely. When is passive or active the better desiccant approach? When is one out of the question? We'll discuss how to control the latent load, arrive at a smart design decision for the circumstance, and consider recent research on first cost and performance.

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DOAS and Homeland Security

In the event of a bioterrorist attack, would having a VAV or DOAS system make a difference? Would one system or another make a difference in the speed of flushing out the contaminant? Or in spreading contaminant through various spaces? Or does filtration selection come into play, too? The correct answer is yes, yes, yes, and yes.
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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
4/15/15 11:00 am EST

On-Site Critical Power Generation for the Data Center & Other Critical Facilities

Can your data center survive a 48 hour outage? Can you continue to pay escalating utility power bills in the years to come? On site "critical" power generation is the inevitable answer for these challenges. 

Engineered Systems Magazine


2015 March

Check out the March issue of ES with the cover story: High-Rise Overhaul, and features: Selecting & Installing Fire And Smoke Dampers To Ensure Code Compliance; Energy Optimization In Existing Buildings; and The Skinny On Reactors For VFDs.
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The Green Energy Management Book

Learn from our experts how to evaluate job opportunities, market your services, sell a Walk-through Survey, target areas for an Energy Audit, calculate energy savings, do retrofit work, and win continuing contracts for retrofit work.

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Clear Seas Research

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Tomorrow's Environment Podcast

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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