Program: Basics of Air Change Rates (ACH): Facts versus Fiction
Presented by: Dr. Kishor Khankari
Description:
Air Changes per Hour (ACH) are often specified in ASHRAE standards, codes, design guidelines, and handbooks for required ventilation rate. Examples of such spaces are patient rooms, operating room, bathrooms, cleanroom, and laboratories. This presentation will systematically demonstrate the validity of popular notions regarding the ACH. The role of space volume in controlling and distributing the contaminant in the space will be discussed.
This presentation will further demonstrate whether ACH can be a sole criterion for effective ventilation of critical spaces using the examples for patient room, hospital operating room, laboratory spaces, and cleanroom. A new concept for analyzing ventilation effectiveness for these spaces will be introduced to design and optimize the HVAC layout for healthcare, laboratory, and cleanroom facilities. In addition, a role of demand control ventilation in minimizing the ACH will be discussed.
This lecture will provide valuable insights to architects, design engineers, and facilities managers into the design and operation of critical facilities.
David Eckel
Treasurer, ASHRAE Ottawa Valley Chapter
[email protected]
Meeting registration which includes dinner.
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Meeting registration which includes dinner.
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Refunds requested by November 12th, 2026 will be issued.