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A Novel Concept for Boiling Heat Transfer Enhancement

D. W. Zhou
Institute of Engineering Thermophysics, Chinese Academy of Sciences B12, Zhongguancun, Haidian District, Beijing 100080, P.R. China

要約

The effect of bubble nucleation on boiling heat transfer enhancement has been investigated experimentally. Results show whether boiling heat transfer is enhanced or not depends directly on effective activation of vapor embryos on the heat transfer surface to initiate boiling. The mechanism of boiling heat transfer enhancement is analyzed and the influence factors of incipient boiling superheat are summarized. In light of bubble nucleation effect, the possible techniques for enhancing boiling heat transfer and eliminating boiling hysteresis are proposed and further developed as a principle to guide the research of boiling heat transfer enhancement.

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