Stay Connected with Engineered Systems
We are on Facebook, Twitter, LinkedIn, etc.

David J. Branson, P.E

Branson is a consulting engineer and co-founder of Compliance Services Group, Inc., Engineers, Architects and Scientists (Lubbock, TX), where he currently serves as executive vice president. He is active in ASHRAE as a participant on several society and technical committees, with special focuses on IAQ and building automation. Branson has designed and deployed PCO technologies in numerous applications, including casinos, pathology labs, hobby shops, classrooms, and facilities for the U.S. Departments of Defense and Homeland Security. He may be contacted by e-mail at


Photocatalysis:Considerations For IAQ-Sensitive Engineering Designs

Heterogeneous photocatalysis, also referred to as photocatalytic oxidation, or PCO, is an emerging advanced oxidizing technology that offers many application opportunities in the HVAC industry. One of the most highly anticipated uses is in providing energy-sensitive solutions to IAQ challenges. A number of system design considerations should be given by the specifying engineer toward maximizing the success of deploying PCO technology in building HVAC designs. This article presents several of those considerations to familiarize system designers with the process of applying PCO technologies.
Read More



Image Galleries

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


2015 May

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

Table Of Contents Subscribe

System Design

Based on your experience and knowledge level, are you currently comfortable designing or maintaining a system incorporating VRF or radiant ceiling panels?
View Results Poll Archive


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.

More Products

Clear Seas Research

With access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

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!


new Facebook icon Twitter icon YouTube iconLinkedIn icon  Google+