![]() ![]() Ultraviolet germicidal irradiation systems were installed in operating air-handling units with visibly fouled cooling coils at sites in Tampa, Florida and University Park, Pennsylvania. The current article reports field measurements of changes in pressure drop and heat-transfer characteristics of fouled coils treated with ultraviolet germicidal irradiation designed for surface disinfection. ![]() Ultraviolet germicidal irradiation is one method to eliminate biofouling. This biological fouling (biofouling) increases airside pressure drop and decreases airside heat transfer coefficient. Wet cooling coil surfaces can provide opportunities for microorganism growth. ![]()
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