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Determination of Water Spray Drop Size and Velocity From a Low Pressure, High Momentum, Water Mist Nozzle. Report of Test.


pdf icon Determination of Water Spray Drop Size and Velocity From a Low Pressure, High Momentum, Water Mist Nozzle. Report of Test. (824 K)
Putorti, A. D., Jr.; Belsinger, T. D.; Twilley, W. H.

FR 4000; 15 p. May 31, 1995.

Available from:

: Fire Research Information Services, National Institute of Standards and Technology, Gaithersburg, MD 20899

Keywords:

water mist; water sprays; drop size measurement; drop sizes; sprays; velocity measurement

Abstract:

In order to characterize the water spray from a low pressure, high momentum water mist nozzle, measurements were made using an optical array probe droplet analyzer. The water droplet sizes and velocities from the nozzle were measured at varying operating conditions and locations in the spray field. The study resulted in droplet size and velocity ranges for the nozzle, as well as mean droplet velocities and droplet size distributions. The pendent nozzle used in this study is currently being evaluated by listing organizations for fire suppression in residential and light hazard occupancies.