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用复合化学镀层强化沸腾传热 预览 被引量:1

POOL BOILING HEAT TRANSFER ON SURFACES ENHANCED BY CHEMICAL PLATING
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摘要 引言 核状池式沸腾是一种成核现象,它包括气泡的产生、气泡的生长以及气泡的脱离3个阶段.在工程应用中,采用强化表面来获得较高的池式沸腾传热系数的例子已有许多,此种方法能在较小传热温差的情况下获得较大的传热通量.例如在低品位热能的利用中就采用了这种方法.另一个很有应用前景的领域是电子元件的冷却. A new method was developed to obtain a new kind of enhanced surface for pool boiling heat transfer.In this method the combined chemical plating (electroless plating) layer was obtained on common metal substrate.The layer was made of metal and nonmetal elements and consisted of polymer particles.By high temperature heat treatment the polymer particles were carbonized to form micropores.The size and density of micropores may vary with the size and density of the polymer particles in the plating solution. It was found that there was a noncrystal metal layer on this kind of surfaces and there were enough ideal cavities on the surface which promoted the initiation of bubbles of nucleate pool boiling.Pool boiling heat transfer measurements were made by using a plain copper surface and the enhanced surface with water at atmospheric pressure.
作者 宋永吉 熊杰明 梁克民 SONG Yongji and XIONG Jieming LIANG Kemin (Department of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617,China)(Institute of Petroleum Chemical Engineering, Shenyang Industry University, Shenyang 110021,Liaoning,China)
出处 《化工学报》 EI CAS CSCD 北大核心 2002年第11期 1202-1205,共4页 Journal of Chemical Industry and Engineering(China)
基金 辽宁省博士科研项目
关键词 镀层 沸腾传热 复合化学镀 池式沸腾 强化传热 chemical plating,heat transfer,pool boiling,heat transfer enhancement
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