Please watch our calendar for changes:

Due to the coronavirus and venue closings,
some of our events have had to be canceled or postponed.
Some meetings and presentations may be
converted to a Video Conference or a Webinar.

Monthly Membership Meetings

Monthly membership meetings are typically held on the second Tuesday of the month from 11:30-1:00pm at the Adventure Science Center's Jack Wood Hall, 800 Fort Negley Blvd.  37203Lunch is free for paid chapter members and students. The cost is $15 for guests and those with unpaid chapter dues. The meeting schedule for the 2020-2021 year is as follows.

 Virtual MeetingTuesday, December 8, 2020 - Fundamentals of Ultraviolet Germicidal Irradiation for Air & Surface Disinfection

GBCI Approved | 1 CE Hour | 0920014267



Germicidal radiation produced by low pressure mercury vapor lamps and other sources is seeing increasing application both for air disinfection and for control of biological growth on surface.  This presentation provides an overview of the fundamentals of ultraviolet germicidal irradiation (UVGI) including principles of operation, component characteristics, system types, applications, and published evidence of effectiveness.


William P. Bahnfleth, Ph.D., P.E.

William Bahnfleth is a professor of architectural engineering at the Pennsylvania State University (Penn State) in University Park, PA, where he has been employed since 1994. Previously, he 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, HVAC 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 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 and the F. Paul Anderson Award. He is also a recipient of the Penn State Engineering Alumni Society’s World-Class Engineering Faculty Award.

  • Tuesday, January 12, 2021 - Humidification Effects on Virus Transmission
  • February 2021 - Student Night & Career Fair
  • Tuesday, March 9, 2021 - Building Information Modeling for the Mechanical Disciplines 
  • Tuesday, April 13, 2021 - Fundamentals of Thermal Displacement Ventilation
  • Tuesday, May 11, 2021 - Critical Facilities New Construction Commissioning and Existing Building Commissioning


Chapter Meetings:
Tuesday, December 8, 2020
Tuesday, January 12, 2021

Student Night & Career Fair:
February 2021