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Critical heat flux limits for a heated surface impacted by a stream of liquid droplets.

Author(s) : HALVORSON P. J., CARSON R. J., JETER S. M., ABDEL-KHALIK S. I.

Type of article: Article

Summary

An experimental apparatus was constructed to allow investigation of heat transfer from a horizontal, upward-facing, heated surface impacted by streams of monodisperse water droplets of varying size and impact frequency. Droplet diameters between 2.3 and 3.8 mm were used, with drop frequencies varying from 2 to 15 droplets per second. The droplet impact velocity was 1.3 m/s. Heat fluxes as high as 325 watts/cm2 were achieved with wall superheats of only 24 deg C. The liquid film thickness produced upon droplet impact is shown to be a key factor in these experiments, and the importance of investigating the wetted area is highlighted.

Details

  • Original title: Critical heat flux limits for a heated surface impacted by a stream of liquid droplets.
  • Record ID : 1995-2866
  • Languages: English
  • Source: J. Heat Transf. - vol. 116 - n. 3
  • Publication date: 1994/08
  • Document available for consultation in the library of the IIR headquarters only.

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