Title of article :
Spray cooling characteristics of water and R-134a. Part I: nucleate boiling
Shou-Shing Hsieh، نويسنده , , Tsung-Cheng Fan، نويسنده , , Huang-Hsui Tsai، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
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 R-134a 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 R-134a and water.
Journal title :
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER