ISSN Online: 2377-424X
ISBN Print: 0-89116-909-1
International Heat Transfer Conference 9
HEAT TRANSFER CHARACTERISTICS AND THE AUGMENTATION MECHANISM OF CARRYING GAS IMPINGEMENT ON MINUTE HEAT SOURCE IN LIQUID COOLANT BATH
要約
The heat transfer of small heated device can be augmented by foreign gas impinging in a liquid cooling bath. In this paper, the mechanism of its heat transfer augmentation was studied. By theoretical analysis and experimental investigation, it was shown that besides the increasing heat transfer by the agitation of liquid caused by gas jet impinging, there existed a heat sink caused by liquid coolant vaporization at the impinging gas-liquid coolant interphase. A physical model of simultaneous heat and mass transfer was proposed to reveal the mechanism of this particular heat transfer phonomenon, Moreover, the Limiting Diffusion Current Technique with simultaneous heat transfer measurement was used to investigate this particular heat transfer phenomenon, by which the respective contribution of convective heat transfer and heat transfer enhanced by interfacial liquid vaporization heat sink were determined simultaneously.