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Developing Effective HVAC Strategies to Limit Trichloramine Exposure in Indoor Aquatic Facilities

Developing Effective HVAC Strategies to Limit Trichloramine Exposure in Indoor Aquatic Facilities
Speaker(s): 
Thursday, October 17, 2019
1:30 pm–2:20 pm
Improving Air and Water Quality Track

This presentation will review air quality concerns and HVAC design challenges associated with indoor pools and will use a recent HVAC renovation and upgrade project at a university indoor facility as a case study. An emerging air quality issue with these facilities is Trichloramine formation and off-gassing from indoor pools, and the adverse health effects of this gas on swimmers, coaches and facility personnel. The presentation will review major natatorium HVAC design concerns, including ventilation, space pressurization and humidity control, and removal of Trichloramine gas through effective ventilation design. Specific examples will be provided in the context of the subject project as well as for general natatorium applications. HVAC system selection will be discussed, including comparisons against alternate styles of pool HVAC equipment available. The application of advanced computational fluid dynamics (CFD) modeling for evaluating and improving HVAC design in natatoriums will be presented. Simulation results will be shared highlighting conditions under existing system operation and for various design configurations considered and analyzed throughout design.