AN INDOOR SIMULATION OF THE BEHAVIOR OF INSECTICIDES SUPPLIED BY AN ELECTRIC VAPORIZER

From a viewpoint of safety assessment of insecticides being released w ith an electric vaporizer into a room a model of fluid dynamics was us ed to simulate the behavior of the evaporated active ingredient (ai), air flow and the temperature distribution at a steady and unsteady sta te under various conditions. The model delivered the behavior of the e vaporated ai due to the variations of the air exchange rate, locations of the air inlet and electric vaporizer and room temperature. A simul ation experiment showed that the calculated aerial concentration at a steady and unsteady state agreed well with the measured one. Thus, the model will be very useful to describe the behavior of ai by utilizing known, calculated, or easily available data of the rooms, use pattern s and physicochemical properties (ai) without realization of experimen ts.