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Flow Boiling Heat Transfer in Two-Phase Micro Channel Heat Sink at Low Water Mass Flux

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Abstract

Boiling heat transfer at water flow with low mass flux in heat sink which contained rectangular microchannels was studied. The stainless steel heat sink contained ten parallel microchannels with a size of 640 × 2050 μm in cross-section with typical wall roughness of 10–15 μm. The local flow boiling heat transfer coefficients were measured at mass velocity of 17 and 51 kg/m2s, heat flux on 30 to 150 kW/m2 and vapor quality of up to 0.8 at pressure in the channels closed to atmospheric one. It was observed that Kandlikar nucleate boiling correlation is in good agreement with the experimental data at mass flow velocity of 85 kg/m2s. At smaller mass flux the Kandlikar model and Zhang, Hibiki and Mishima model demonstrate incorrect trend of heat transfer coefficients variation with vapor quality.

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Authors and Affiliations

  1. Institute of Thermophysics SB RAS, Av. Lavrentyev, 1, Novosibirsk, 630090, Russia

    Vladimir V. Kuznetsov & Alisher S. Shamirzaev

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  1. Vladimir V. Kuznetsov
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  2. Alisher S. Shamirzaev
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Correspondence to Vladimir V. Kuznetsov.

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Kuznetsov, V.V., Shamirzaev, A.S. Flow Boiling Heat Transfer in Two-Phase Micro Channel Heat Sink at Low Water Mass Flux. Microgravity Sci. Technol. 21 (Suppl 1), 305–311 (2009). https://doi.org/10.1007/s12217-009-9158-0

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  • DOI: https://doi.org/10.1007/s12217-009-9158-0

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