January 2013 Meeting: Sprinkler Droplet Characterization

  • 14 Jan 2013
  • 11:30 AM - 2:00 PM
  • Monterey Hill Restaurant, 3700 Ramona Blvd., Monterey Park, CA 91754


  • Member pricing when registered 5 or more days prior to chapter meeting.
  • Non-member pricing when registered 5 or more days prior to chapter meeting.

Registration is closed

Jeremiah Crocker, P.E. from Tyco Fire Protection Products will be presenting on Droplet Characterization Using Direct Imaging Techniques.

The ability to accurately measure sprinkler spray characteristics is necessary to validate predictive modeling tools such as  Fire Dynamic Simulator (FDS),  in turn  leading to better predictions of the spray’s impact on the fire environment.  Better predictions of sprinklered fires in FDS coupled with a better understanding of the impact of deflector changes will also eventually help to streamline the development of new fire suppression products.   The pertinent spray characteristics include droplet size, droplet velocity, ligament breakup distance and flux distribution. Of these, droplet size is a particularly important variable for both modeling accuracy and fire suppression capabilities of the spray.

In this study droplet size  was measured using  a  laser  and a high resolution  CCD camera through a technique known as high-magnification shadow imaging  (shadowgraphy).  A variety of parameters were adjusted to better understand their effect on droplet size, including spray angle, K-factor, pressure, radial distance from the nozzle and location in the spray. All tests were done using commercially available variations of the Tyco D3 directional spray nozzle. This presentation outlines the results of the experiments and highlights the importance of understanding droplet size measurements in predictive modeling.


Networking: 11:30AM

Lunch: 12:00PM

Presentation: 12:45PM-2:00PM

Questions or Inquiries?  Feel free to e-mail us.

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