蒸汽直接接触冷凝换热特性实验分析  

Experimental analysis on heat transfer characteristics of steam direct contact condensation

作　　者：晋建厂 王俊杰 王畅[2] 郝锐[2] JIN Jianchang;WANG Junjie;WANG Chang;HAO Rui(Naval Equipment Department of PLAN,Beijing 100080,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]海军装备部,北京100080 [2]中国舰船研究设计中心,湖北武汉430064

出　　处：《中国舰船研究》2024年第S02期197-203,共7页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(51609227)。

摘　　要：[目的]为支撑小型模块式反应堆安全壳抑压装置设计与优化,开展蒸汽直接接触冷凝换热特性分析。[方法]利用抑压模拟实验装置对蒸汽直接接触冷凝换热现象进行热工及可视化实验,分析不凝性气体份额、蒸汽质量流速、冷却水过冷度对冷凝换热特性的影响。[结果]结果表明,增加不凝性气体份额会减弱蒸汽冷凝换热;蒸汽质量流速、冷却水过冷度会从多方面影响蒸汽冷凝换热。[结论]所提出的蒸汽直接接触冷凝换热模型预测值与实验值的偏差在±20%以内,能够较为准确地描述蒸汽直接接触冷凝换热的物理过程。[Objective]To support the design and optimization of containment suppression devices for small modular reactors,this study investigates the heat transfer characteristics of steam direct contact condensation.[Methods]A thermal and visual experimental study is conducted on the phenomenon of steam direct contact condensation using a pressure suppression simulation experimental apparatus.An analysis is then made of the effects of the non-condensable gas fraction,steam mass flow rate and cooling water subcooling degree on the condensation heat transfer properties.[Results]The experimental findings demonstrate that increasing the mass fraction of non-condensable gases weakens steam condensation heat transfer.Both the steam mass flow rate and cooling water subcooling degree have multifaceted impacts on the steam condensation heat transfer process.[Conclusions]The deviation between the predicted values from the proposed steam direct contact condensation heat transfer model and the experimental measurements is within±20%,indicating that the model accurately represents the physical process of steam direct contact condensation heat transfer.

关 键 词：蒸汽直接接触冷凝 换热特性 安全壳抑压 不凝性气体 

分 类 号：U664.156[交通运输工程—船舶及航道工程]