Measurements of the air entrainment associated with different agricultural nozzle conditions were made by recording air velocities with the nozzles spraying into three sizes of a parallel plate arrangement. Results showed that for conventional flat fan nozzles, air entrainment increased with nozzle size and operating pressure as expected. For a given flow rate, hollow cone nozzles entrained approximately 40% more air than flat fan designs. Higher entrained air velocities were measured with the nozzleat the top of the plates and with the deepest plate section.
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