Validation of In-Room UV-C-Based Air Cleaners

Figure 2

Results of CO₂ tracer tests. Symbols represent location-specific, time-course measurements. Vertical red-dashed line represents the time at which CO₂ introduction to the IAQ chamber was terminated. Horizontal blue-dashed line represents the average of CO₂ concentration measurements from the Mauna Kea Observatories for the period of these experiments. All experiments were conducted with the HVAC system operating at 2.0 ACH. (a) Indication of behavior with HVAC system only; (b) indication of behavior with HVAC system and air cleaner operating at 1020 m³/hr; (c) indication of behavior with HVAC system and a box fan operating at maximum speed.

(a)

(b)

(c)