Abstract
A fogging fan system employing an oscillating fan with a rotating fogging nozzle was tested in experimental and commercial poultry buildings. The system reduced air temperature by 6° C (11° F) or more. The sensible heat balance approach presented by Bottcher et al. (1991) for characterizing misting efficiency was applied to the test results. The percentage of the water flow rate which evaporated within the buildings was computed to be 60% or more, which is comparable to the evaporative efficiency of conventional fogging systems operating at relatively high water pressures [e.g., 3400 kPa (500 psi)].
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