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Atomization and Sprays

Publication de 12  numéros par an

ISSN Imprimer: 1044-5110

ISSN En ligne: 1936-2684

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Indexed in

CHARACTERIZATION OF A RESIDENTIAL FIRE SPRINKLER USING PHASE DOPPLER INTERFEROMETRY

Volume 12, Numéro 1-3, 2002, pp. 69-90
DOI: 10.1615/AtomizSpr.v12.i123.40
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RÉSUMÉ

The results of a feasibility study to determine if the water sprays produced by residential fire sprinklers can be accurately characterized using phase Doppler interferometry (PDI) are presented. The large size of the water drops produced by fire sprinklers, and the relatively large coverage area of the spray, present significant challenges when attempting to characterize these sprays. These difficulties are especially relevant when using PDI because large drops and large coverage areas may result in trajectory-dependent scattering errors and attenuation of the transmitting laser beams. For the residential sprinkler investigated, it was determined that trajectory ambiguity was not a significant source of error, hut attenuation of the laser beam resulted in overcounting of drops due to burst splitting. The effect on the data was minimized by carefully choosing the operating parameters of the PDI processing electronics. For the spray investigated, the Sauter mean diameter varied from approximately 360 to 560 mm. Integration of the radial profile of the volume flux resulted in a calculated flow rate that agreed with the flow through the sprinkler to within 8%. The results of this study demonstrate that PDI can be used to accurately characterize the sprays produced by residential fire sprinklers.

CITÉ PAR
  1. Sacadura J.F., Radiative heat transfer in fire safety science, Journal of Quantitative Spectroscopy and Radiative Transfer, 93, 1-3, 2005. Crossref

  2. Widmann John F, Duchez Jason, The effect of water sprays on fire fighter thermal imagers, Fire Safety Journal, 39, 3, 2004. Crossref

  3. Presser C., Yang J. C., Fire Suppression, in Handbook of Atomization and Sprays, 2011. Crossref

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