Category Archives: Events

UPDATE – Tech session added for April 9th chapter meeting

Important update regarding the April 9th chapter meeting:

The original meeting invitation went out without a pre-meeting tech session established. We now have a tech session presenter confirmed. The tech session will begin at 10:45am at Spazio Westport, prior to the regular chapter meeting at noon on Monday, April 9th.

Program and speaker bio:
Duct Design Fundamentals

This technical program will review the fundamentals of ductwork design, with emphasis on total pressure and equal friction design calculations, and touch on the static pressure regain method. An Excel spreadsheet will be presented to facilitate total pressure calculations, with examples provided to emphasize pros and cons of the calculation procedures.

The goals of this presentation will be to help identify duct sections with higher pressure resistance, methods to minimize duct construction cost, and how to determine the total system resistance for fan sizing. Methods to refine a duct system for lowest operating cost will also be discussed.

Robert L. Towell, P.E., QCxP, LEED AP is Vice President of CxE Group LLC, serves as the firm’s Commissioning Program Manager, and brings a wealth of building commissioning, energy analysis and large project management experience to the team. Bob is a registered engineer in the State of Missouri and four other states, and is a Qualified Commissioning Process Provider under the University Of Wisconsin College Of Engineering Certification Program, which was developed in association with the Building Commissioning Association.
Bob has over 30 years experience in building design and system analysis for a broad range of building and system types. Local projects of note include the Edward Jones Dome, Eagleton U.S. Courthouse, Metropolitan Square, and St. Louis Galleria (Phase 1). The Edward Jones Dome received a 1st Place national ASHRAE Technology Award in 1998 for Bob and his firm.
Bob is a member of the following technical societies: the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE, member since 1984), US Green Building Council (USGBC), Building Commissioning Association (BCxA), and National Society of Professional Engineers (NSPE). Bob graduated from the University of Illinois in 1977 with a degree in Mechanical Engineering, where he also completed graduate studies in Advanced Control Theory and Optimization of Thermal Systems.

April Chapter Meeting – Register today!

The April 2012 chapter meeting will be held at LUNCH time on Monday, April 9th, 2012.

Register here

Main Program at 12:00 P.M. (PLEASE NOTE TIME CHANGE)

Sustainable Chilled Water Systems

This presentation will explore several different chilled water system choices and some benefits of shifting peak load of the HVAC system to save energy costs. Producing and storing ice at night, when energy costs are lowest, and discharging cooling during the high on-peak rate period, reduces demand charges and can lower peak power usage.

We will discuss the application of different types of chillers circulating a cold glycol/water solution through dedicated ice tanks. During the on peak discharge cycle the glycol/water solution is piped through the tanks. The cooled solution is then circulated to satisfy the building cooling load.

Carefully applied, demand charges and energy costs can be reduced.

Sustainable designs and high performance standards such as ASHRAE Standard 189 will be discussed.


Julian R. de Bullet has over 40 years experience in the HVAC industry. He is Vice President, Business Development with FAFCO Thermal Storage Systems LLC. His career has concentrated on the applications of Chilled Water and All-Air systems as a manager of applied equipment sales and of a service/performance contracting operation. Recently he was Director of Industry Relations for a major HVAC manufacturer.
As ASHRAE Vice President (2001/2003), he served on the Board of Directors and the Executive Committee and was Chair of Member Council and Publishing Council. He is Past President of the National Capital Chapter and was Director and Regional Chair for ASHRAE Region III. He is an ASHRAE Distinguished Lecturer with over 300 Seminars delivered around the world with topics including “Responsible Refrigerant Use”, “Sustainable HVAC Systems”, “Variable Primary Flow System designs” and “90.1 and LEED”. He is a member of ASHRAE TC 8.2 Centrifugal Chillers and has co-authored numerous ASHRAE Handbook chapters. He chaired the Professional Development Committee, (Responsible for the ASHRAE Educational programs), was a voting member of the Publications and Education Council and the Society Advocacy Committee. He has co-authored ASHRAE Position Documents on Energy Efficiency, Natural Refrigerants and Ozone Depletion. He is a Life Member and holds the Distinguished and Exceptional Service Award

He presently serves on both the Honors and Awards Committee and the Nominating Committee.

He is a Graduate of the London University system in England, where he obtained an Electrical Engineering degree and a Diploma in Marketing.

February Chapter Meeting Announcement


Monday, February 13th, 2012

Dinner (after Tour Approx. 7:00 p.m. @ Jilly’s Steakhouse)

5:00 pm  to 7:00 p.m. Tour (1.0 PDH)

Jilly’s Steakhouse for Marlo Coil Factory in High Ridge Missouri

DRS Marlo Coil has manufactured heat transfer, refrigeration, industrial coils along with marine coils for the United States Navy since 1925.  We will tour the facility that houses Engineering, Computational Fluid Dynamics, Manufacturing and Testing.  Some of the items we will see on the tour are the manufacturing steps that include fin press, tube expansion, header fabrication, sheet metal fabrication, final assembly and testing processes.  Additionally we will see various coil casing types, fin types and materials, header designs, cleanable coils, steam and distributing steam coils, air tight housing, split core and Mill Spec shipboard coils. Continue reading