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Spray cooling characteristics of water and R134a. 1. Nucleate boiling.

Author(s) : HSIEH S. S., FAN T. C., TSAI H. H.

Type of article: Article

Summary

An experimental study was made in the first of two papers to determine the effect of liquid sprays used to cool a hot surface. Both pure water and R134a were served as a working medium sprayed from a single circular nozzle onto a Cu (oxygen free) metal of an electrically heated surface which was heated to an initial temperature with a range of wall superheat for steady-state nucleate boiling experiments using thermocouples for heat transfer measurements. Cooling characteristics (boiling curves) were obtained over a range of spray mass flux, Weber number, wall superheat and degree of subcooling. Boiling visualization was also conducted with varied heat flux levels at a specified We for R134a and water. (See also this Bulletin, reference 2005-0631.)

Details

  • Original title: Spray cooling characteristics of water and R134a. 1. Nucleate boiling.
  • Record ID : 2005-0630
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 26
  • Publication date: 2004/12

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