【摘要】：隨著電子系統(tǒng)日益發(fā)展,高熱流密度電子器件的冷卻問題備受關(guān)注,微細(xì)通道液冷是一種廣泛使用的高效冷卻方式.印刷電路板換熱器具有傳熱系數(shù)高、緊湊、高效等特點,有望成為微細(xì)通道熱沉的備選方案.為此,本文對幾種不同肋結(jié)構(gòu)印刷電路板換熱器的散熱性能進(jìn)行了評估,結(jié)果表明,非連續(xù)肋結(jié)構(gòu)性能顯著優(yōu)于連續(xù)平直肋結(jié)構(gòu);改進(jìn)翼型肋綜合傳熱性能最佳,其次依次是翼型肋、橢圓肋、圓形肋和連續(xù)平直肋,改進(jìn)翼型肋在高雷諾數(shù)條件下優(yōu)勢更加顯著;相對于平直肋,改進(jìn)翼型肋印刷電路板換熱器Nu數(shù)提高了20.2%,阻力上升了5.6%.
[Abstract]:With the development of electronic system, the cooling of high heat flux electronic devices has been paid more and more attention. Microchannel liquid cooling is a widely used high efficiency cooling method. Printed circuit board heat exchanger has the characteristics of high heat transfer coefficient, compact and high efficiency, so it is expected to be an alternative scheme for micro channel heat sink. In this paper, the heat dissipation performance of several kinds of heat exchangers with different rib structures on printed circuit boards is evaluated. The results show that the performance of discontinuous rib structures is significantly better than that of continuous straight ribbed structures. The comprehensive heat transfer performance of the improved wing rib is the best, followed by the wing rib, the elliptical rib, the circular rib and the continuous straight rib, and the advantage of the improved wing rib is more obvious under the condition of high Reynolds number. Compared with the flat rib, the Nu number of the improved fin printed circuit board heat exchanger is increased by 20.2and the resistance is increased by 5.6.
【作者單位】： 西安交通大學(xué)熱流科學(xué)與工程教育部重點實驗室;
【基金】：國家自然科學(xué)基金(51120165002,51276139)資助
【分類號】：TK172;TN41

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1 李磊;楊劍;馬挺;徐向陽;曾敏;王秋旺;;印刷電路板通道的高溫傳熱和阻力特性研究[J];工程熱物理學(xué)報;2014年05期

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本文編號：2404672