A DROPLET GENERATOR PRODUCING NARROW DROP SIZE SPECTRA

A new droplet generator producing sprays with a narrow drop size spect rum is described. It operates on the principle of the controlled break up of liquid jets. In the laboratory, droplet coalescence is largely c ontrolled by emitting the jets from a rotating cylinder. Operational c alibration curves are presented and the calibration technique describe d. Under laboratory conditions, volume median diameters from 135 to 23 5 microns were obtained and drop size distributions had relative spans averaging 0.15 with a standard deviation of 0.03. Under field conditi ons, the relative spans averaged 0.53 with a standard deviation of 0.0 6.