盐水核态池沸腾传热及汽泡行为的实验研究  

Experimental Study of Nucleate Pool Boiling Heat Transfer and Bubble Dynamics in Saline Solution

作　　者：刘琦[1] 陈瑜锐 吴玉新[1] 顾君苹 吕俊复[1] LIU Qi;CHEN Yu-Rui;WU Yu-Xin;GU Jun-Ping;LU Jun-Fu(Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学能源与动力工程系,清华大学热科学与动力工程教育部重点实验室,北京100084

出　　处：《工程热物理学报》2020年第7期1694-1699,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51761125011)。

摘　　要：掌握含盐水池沸腾中的汽泡行为和传热特性,本文基于ITO镀膜层加热和高速拍摄技术建立了含盐水池沸腾的可视化实验装置,研究了池沸腾传热特性和汽泡动力学特性。研究发现随着盐浓度的升高,池沸腾传热得到强化。可视化的研究结果表明盐分的存在和析出会导致汽泡的脱离直径和生长时间减小、脱离频率增大,从而提高了池沸腾传热系数。An in-depth understanding of the boiling heat transfer characteristics of brines is of great significance for ensuring heat transfer safety in nuclear power plants,steam injection boilers,and seawater desalination.In order to grasp the bubble behavior and heat transfer characteristics of salt pool boiling,this paper establishes a visual experimental device for salt pool boiling based on ITO coating layer heating and high-speed shooting technology,and studies the boiling heat transfer characteristics and bubble dynamics of the pool.It is found that the pool boiling heat transfer is enhanced as the salt concentration increases.Visualization studies have shown that the presence and precipitation of salt leads to a decrease in the detachment diameter and growth time of the bubble and an increase in the frequency of detachment,thereby increasing the pool boiling heat transfer coefficient.

关 键 词：盐水溶液 池沸腾传热 汽泡行为 盐浓度 

分 类 号：TK124[动力工程及工程热物理—工程热物理]