空气-水蒸气流经扰流圈的冷凝传热强化  

ENHANCED CONDENSATION HEAT TRANSFER OF AIR-VAPOR THROUGH A VERTICAL TUBE WITH BAFFLE RODS

作　　者：高学农[1] 杨国君[1] 叶国兴[1] 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广东广州510640

出　　处：《工程热物理学报》2001年第5期615-617,共3页Journal of Engineering Thermophysics

基　　金：广东省自然科学基金资助项目(No.980532);国家重点基础研究发展规划资助项目(No.G20000263)

摘　　要：本文对含高浓度不凝组分存在条件下水蒸汽冷凝传热强化进行了机理分析和实验．结果表明，扰流圈能大大增加气液边界层的湍动强度，具有优越的强化传热、传质效果．在实验范围内，其冷凝传热膜系数是光滑管的１．９～３．５倍．The mechanism of heat transfer enhancement of forced convective condensation with noncondensable gas on spiral grooved tube with baffle rods has been analyzed. The experimental results show that the baffle-rod induced stronger turbulence in two phase flow and enhanced the heat and mass transfer. In the experiment range, the overall heat transfer coefficients has been magnitude as a factor of 0.9-2.5 comparing with a plain tube at the same conditions.

关 键 词：冷凝传热强化 扰流圈 空气-水蒸气 

分 类 号：TK124[动力工程及工程热物理—工程热物理]