The Why, What, and How of Air Flow Control, Not Just for Techies

June 20, 2019
2 p.m. – 3 p.m.
Eastern Time


Air flow control is one of the technical building blocks of a functional laboratory. Ventilation systems support the exposure control devices and pressurization strategies that protect lab workers and their colleagues. These systems are built on individual air flow controllers. The way these subsystems perform enables the larger objectives of the ventilation system. Additionally, air flow control is the primary lever affecting energy use in many laboratories. Performance is defined with reference to control technology concepts and practical implications. Steps to achieve performance are described: specification, execution, testing and maintenance. Components, systems and design concepts are developed and explained. Applicability of particular devices to certain performance objectives is made clear. Their physical characteristics are related to the performance of a flow control loop. Different types of flow sensors, controllers and air valves are all discussed from this point of view. In the end, the talk comes back to the real objectives, as affected by the technical details that were explained.

After viewing this presentation, attendees will:

  1. Connect flow control performance with operating objectives for the building and the ventilation system;
  2. Evaluate and compare statements of flow control accuracy;
  3. Apply instrument accuracy concepts in evaluation of air flow control systems, recognizing the effects of components on overall accuracy; and
  4. Recognize various kinds of flow control components, their strengths, weaknesses and applicability.


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Professional Development Hours and Continuing Education Credits

Webinar attendees and those who view the recording can earn one Professional Development Hour (PDH) for professional engineers or one Learning Unit (LU) from the American Institute of Architects for registered architects.

Contact I2SL after the webinar if you would like to receive a credit for your participation.

Instructor Biography

Jim Coogan, P.E., is a principal in product development at Siemens Building Technologies. In 35 years of experience in designing controls for mechanical systems, he has contributed to products ranging from room controllers to Internet-based interfaces. Mr. Coogan has chaired several ASHRAE committees. He is also a member of a committee that is revising the Z9.5 Laboratory Ventilation standard and participates in programs with the International Institute for Sustainable Laboratories.


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