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Particulate fouling of HVAC heat exchangers.


Fouling of heat exchangers used in heating, ventilation, and air conditioning systems can cause increased energy use, decreased performance, and degraded indoor air quality. Particulate matter from both indoor and outdoor sources is a common fouling agent. This study simulates and measures particle deposition on HVAC heat exchangers and explores potential impacts including bioaerosol deposition and growth on heat exchanger surfaces, degradation of air conditioner efficiency and capacity in residences, and increased fan energy use in commercial HVAC systems.