沉积时间和电流对多孔表面沸腾特性的影响  

Effect of deposition time and current on pool boiling characteristics on porous surface

作　　者：谢鸿玺 王炳忠 谢宝刚 付炜 周坤 XIE Hong-xi;WANG Bing-zhong;XIE Bao-gang;FU Wei;ZHOU Kun(Hefei General Machinery&Electrical Products Inspection Institute Co.,Ltd.,Hefei General Machinery Research Institute Co.,Ltd.,Hefei 230031,Anhui Province,China;Qingdao Branch of Navy Aviation University,Qingdao 266041,Shandong Province,China)

机构地区：[1]合肥通用机械研究院有限公司,合肥通用机电产品检测院有限公司,安徽合肥230031 [2]海军航空大学青岛校区,山东青岛266041

出　　处：《化学工程》2023年第3期1-6,共6页Chemical Engineering(China)

基　　金：国家重点研发计划项目(2020YFF0218603,2021YFF0306604);安徽省自然科学基金青年项目(2108085QE235)。

摘　　要：多孔表面是提高沸腾传热性能的有效表面改性技术。为探究多孔表面的制备参数对沸腾传热性能的影响,应用电化学沉积法在不同的沉积时间和电流下制备了多孔表面,并在常压下对去离子水进行了池沸腾实验。与普通表面相比,多孔表面显著提高了沸腾传热性能。最大临界热流密度(CHF)和最高传热系数(HTC)分别达到3.00 MW/m^(2)和136 kW/(m^(2)·K),比光滑表面分别提升了145%和156%。CHF和HTC对多孔表面的增强归因于气化核心数量增加、传热面积的增加和毛细芯吸力的增强。Porous surface is an efficient surface modification technology for enhancing boiling heat transfer performance.In order to investigate the effect of deposition parameters on the boiling characteristics,porous surfaces were prepared by electrochemical deposition at different deposition time and deposition current,and pool boiling experiments of deionized water at atmospheric pressure were conducted.Significant enhancement in boiling heat transfer performance was achieved with porous surface compared to plain surface.The maximum critical heat flux(CHF)and highest heat transfer coefficient(HTC)can arrive at 3.00 MW/m^(2) and 136 kW/(m^(2)·K),representing 145%and 156%enhancement over plain surface,respectively.The enhancements of CHF and HTC for porous surfaces are attributed to the increased nucleation sites,the increased heat transfer areas and the enhanced capillary wicking.

关 键 词：相变 传热 表面 沉积时间 沉积电流 

分 类 号：TK124[动力工程及工程热物理—工程热物理]