You are here:
CHARACTERIZATION OF OZONE EMISSIONS FROM AIR CLEANERS EQUIPPED WITH OZONE GENERATORS AND SENSOR AND FEEDBACK CONTROL CIRCUITRY
Citation:
Mason*, M A., L E. Sparks*, S A. Moore*, I Dolgov*, AND R B. Perry*. CHARACTERIZATION OF OZONE EMISSIONS FROM AIR CLEANERS EQUIPPED WITH OZONE GENERATORS AND SENSOR AND FEEDBACK CONTROL CIRCUITRY. Presented at Engineering Solutions to IAQ Problems, Raleigh, NC, 7/17-19/2000.
Description:
The paper give results of a characterization of ozone emissions from air cleaners equipped with ozone generators and sensor and feedback control circuitry. Ozone emission rates of several consumer appliances, marketed as indoor air treatment or air purification systems, were determined ina well-characterized 30-cubic meter environmental chamber. Additional tests were conducted in a research test house to determine the effects of appliances on research house ozone concentrations and to evaluate the performance of an ozone generator feedback control system. Ozone emission rates determined in the chamber studies ranged from 0.5 to >150 mg/hr for one appliance at 50% relative humidity (RH). Ozone emission rates increased as RH decreased for all models tested. Nitrogen dioxide generation rates ranged from 0.06 to 0.16 times the ozone emission rate and varied among models of different manufacturers. When chamber-derived ozone emission rates were input into the RISK model, the model provided reasonable estimates of the time history of ozone concentrations that were measured in the research house. The research house experiments demonstrated that these types of devices can produce ozone concentrations above acepted health guidelines.