Enhanced Boiling Heat Transfer in Water Pools with Perforated Copper Beads and Sodium Dodecyl Sulfate Surfactant  

作　　者：Pengcheng Cai Teng Li Jianxin Xu Xiaobo Li Zhiqiang Li Zhiwen Xu Hua Wang 

机构地区：[1]Faulty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,650093,China [2]State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming,650093,China [3]Yuxi Cigarette Factory,Hongta Tobacco(Group)Co.,Ltd.,Yuxi,653100,China

出　　处：《Fluid Dynamics & Materials Processing》2025年第2期325-349,共25页流体力学与材料加工(英文)

基　　金：supported by the National Natural Science Foundation of China(Project No.52166004);the National Key Research and Development Program of China(Project No.2022YFC3902000);the Major Science and Technology Special Project of Yunnan Province(Project Nos.202202AG050007;202202AG050002);the Research on the Development of Complete Sets of Technology for Extraction of Aromatic Substances from Tobacco Waste and Its Application,Applied Research-Pyrolysis Process Technology Research(2023QT01).

摘　　要：In modern engineering,enhancing boiling heat transfer efficiency is crucial for optimizing energy use and several industrial processes involving different types of materials.This study explores the enhancement of pool boiling heat transfer potentially induced by combining perforated copper particles on a heated surface with a sodium dodecyl sulfate(SDS)surfactant in saturated deionized water.Experiments were conducted at standard atmospheric pressure,with heat flux ranging from 20 to 100 kW/m2.The heating surface,positioned below the layer of freely moving copper beads,allowed the particle layer to shift due to liquid convection and steam nucleation.The study reports on the influence of copper bead diameter(2,3,4,and 5 mm),particle quantity,arrangement,and SDS concentration(20,200,and 500 ppm).It is shown that the combination of 5 mm particles and a 500 ppm SDS concentration can yield a remarkable 139%improvement in heat transfer efficiency.As demonstrated by direct flow visualization,bubble formation occurs primarily in the gaps between the particles and the heated surface,with the presence of SDS reducing bubble size and accelerating bubble detachment.

关 键 词：Pool boiling heat transfer enhancement perforated copper beads SURFACTANT bubble nucleation mechanism flow visualization 

分 类 号：TK124[动力工程及工程热物理—工程热物理]