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ISSN Online: 2377-424X

International Heat Transfer Conference 4
August 31 - September 5, 1970, Paris-Versailles, France

ACOUSTICAL EFFECTS ON NUCLEATE POOL BOILING HEAT TRANSFER FROM A HORIZONTAL WIRE

Get access (open in a dialog) DOI: 10.1615/IHTC4.130
pages 1-10

Sinopsis

Experimental results indicated that the heat transfer rate in nucleate pool boiling could be increased at a given temperature difference by increasing the sound pressure at the constant sound frequency. The surface temperature required for the inception of nucleate boiling was also found to decrease with increasing sound pressure. At the present apparatus there was a critical value of sound pressure above which the heat transfer would start to decrease. This critical sound pressure seemed to depend upon the bulk temperature of water in addition to some other factors. Based on visual observations, an acoustically induced stirring mechanism was proposed to qualitatively explain the experimental results.