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
晋建厂 1王俊杰 2王畅 2郝锐2
作者信息
- 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
- 折叠
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.
Abstract
[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 con-tact 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 trans-fer process.[Conclusions]The deviation between the predicted values from the proposed steam direct con-tact 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Key words
direct contact condensation of steam/heat transfer characteristics/containment pressure sup-pression/non-condensable gas引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据