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David Lavan

Lavan is a senior engineer with Elara Energy Services. In addition to his experience in MEP design, he has lectured in the mechanical engineering department at the University of Illinois at Chicago. He has received three first place Illinois ASHRAE excellence in engineering awards. He holds a bachelor of science degree in mechanical engineering from Illinois Institute of Technology, a bachelor of science degree in physics from Northeastern Illinois University and a masters of science degree in mechanical engineering from University of Illinois at Chicago.


Lakefront Library: Radiant Systems Meet Natural Ventilation

December 1, 2008
Just as this university stayed ahead of the curve with its digital library, designers harnessed the benefits of radiant heating and cooling with the advantages of natural HVAC. With a building that frequently employs hybrid or all-natural modes, readers and researchers can enjoy lower-impact comfort to go with the sights and sounds of Lake Michigan.
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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
3/27/14 11:00 am EST

How to Calculate Backup Power Supply Requirements for Your Facility

On-Demand This webinar reviews how to determine power requirements of facility loads; electrical characteristics and impact of different types of loads such as large motors and UPS systems on power supply sizing; acceptable power sources and other constraints applied by building codes; and how software tools can be used to simplify the process of calculating backup power requirements.  


Engineered Systems Magazine

ES April 2014 cover

2014 April

Check out the April 2014 issue of Engineered Systems, with features on backup power supply requirements, cyberattacks, and much more!

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Design Flaws

Following up on Howard McKew's April "Tomorrow's Environment" column: Have you ever thought twice about reporting problems with another firm's design? What did you do?
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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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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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