Boiling heat transfer in a hydrofoil-based micro pin fin heat sink

Ali Kosar; Yoav Peles

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Boiling heat transfer in a hydrofoil-based micro pin fin heat sink

机译：水翼式微针翅片散热器中的沸腾传热

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摘要

Flow boiling of R-123 in a hydrofoil-based micro pin fin heat sink was investigated. Average two-phase heat transfer coefficients were obtained over effective heat fluxes ranging from 19 to 312 W/cm~2 and mass fluxes from 976 to 2349 kg/m~2 s. The paper presents a flow map, which divides the data into three flow pattern regions: bubbly, wavy intermittent and spray-annular flows. Heat transfer coefficient trends and flow morphologies were used to infer boiling heat transfer mechanisms. Existing conventional scale correlations for circular tubes resulted in large scatter and were not able to predict the heat transfer coefficients accurately.

机译：研究了R-123在水翼型微针翅片散热器中的沸腾现象。在有效热通量为19至312 W / cm〜2和质量通量为976至2349 kg / m〜2 s的情况下，获得了平均两相传热系数。本文提出了一种流图，该图将数据分为三个流模式区域：气泡流，波浪间歇流和喷雾环形流。利用传热系数趋势和流动形态来推断沸腾传热机理。圆管的现有常规比例相关性导致较大的分散，并且无法准确预测传热系数。

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来源
《International Journal of Heat and Mass Transfer》 |2007年第6期|p.1018-1034|共17页
作者
Ali Kosar; Yoav Peles;
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作者单位

Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
关键词
pin fin; microchannels; cross-flow; flow pattern; MEMS; boiling;

机译：针鳍;微通道;错流;流型;MEMS;沸腾;

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Boiling heat transfer in a hydrofoil-based micro pin fin heat sink

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