Welcome to the National Capital Chapter of ASHRAE!


Check out our NEW Upcoming Events module previewing the next two NCC chapter events, located on the left side of the home page!


NOTE: This month's presentation continues with the webinar format, due to the ongoing effects of COVID-19, and will be held during lunch time on September 23rd.  After registering on the National Capital Chapter website, all registrants will be sent follow up email(s) periodically with the information to access the Zoom meeting.


** All Student Members please contact the registration chair.


Professional Education Seminar (PES) Webinar
Topic: Commercial IAQ & COVID
-Speakers: William P. Bahnfleth, PhD, PE, FASHRAE, FASME, FISIAQ

Zoom meeting information will be sent to all meeting registrants.

Note that the webinar will be recorded for archival purposes; you may opt out of being recorded by leaving your video feed off and microphone muted.


Managing HVAC Systems to Reduce Infectious Disease Transmission




This presentation will begin by reviewing relevant information on airborne infectious disease transmission including disease transmission modes, infectious aerosol generation, and concepts of risk management. It will then give an overview of engineering controls including ventilation, filtration, and air disinfection and will compare their advantages and limitations. Finally, ASHRAE’s Covid-19 guidance will be introduced and summarized.



Presenter Bio:

William Bahnfleth is a professor in the Department of Architectural Engineering at the Pennsylvania State University (Penn State) in University Park, PA, where he has been employed since 1994. Recently he also became the Chair for the ASHRAE Epidemic Task Force.

Previously, Dr. Bahnfleth was a Senior Consultant for ZBA, Inc. in Cincinnati, OH and a Principal Investigator at the U.S. Army Construction Engineering Research Laboratory in Champaign, IL. He holds BS, MS, and PhD degrees in Mechanical Engineering from the University of Illinois, where he also earned a bachelor of music degree in instrumental performance. His is a registered professional engineer.

At Penn State, Dr. Bahnfleth teaches undergraduate courses in HVAC fundamentals, system design, and controls and graduate courses in chilled water systems, hot water and steam systems, and indoor air quality. His research interests cover a wide variety of indoor environmental control topics including chilled water pumping systems, stratified thermal energy storage, protection of building occupants from indoor bioaerosol releases, ultraviolet germicidal irradiation systems, and others. He is the author or co-author of more than 170 technical papers and articles and 14 books and book chapters. He consults on the design of chilled water thermal energy storage systems and has been involved in more than 20 projects world-wide.

Dr. Bahnfleth is a fellow of ASHRAE, the American Society of Mechanical Engineers (ASME) and the International Society for Indoor Air Quality and Climate (ISIAQ). He is also a member of the Indoor Air Quality Association (IAQA), the International Building Performance Simulation Association (IBPSA), and the Society of Building Science Educators (SBSE). He has served ASHRAE in a variety of capacities, including Student Branch Advisor, Chapter Governor, Technical Committee and Standing Committee Chair, and as Director-at-Large, Vice President, Treasurer, and 2013-14 Society President. His honors include a 1st place ASHRAE Technology Award, Transactions Paper Award, Distinguished Service and Exceptional Service Awards, The Louise and Bill Holladay Distinguished Fellow Award, the E.K. Campbell Award of Merit for service and achievement in teaching, and the F. Paul Anderson Award, ASHRAE’s highest honor. He is also a recipient of the Penn State Engineering Alumni Society’s World-Class Engineering Faculty Award.


Below is the NCC chpater meeting calendar for 2020-2021


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