水平强化管外池沸腾换热性能实验研究  

Experimental Study of Pool Boiling Heat Transfer on Enhanced Tubes

作　　者：熊高鹏[1] 欧阳新萍[1] 

机构地区：[1]上海理工大学动力学院制冷技术研究所,上海200093

出　　处：《制冷学报》2006年第3期5-9,共5页Journal of Refrigeration

摘　　要：以目前广泛使用的R22为工质，对Turbo-BⅡ管管内外换热性能进行了实验研究；管内以水为加热介质；在恒定热流密度与饱和压力不变条件下，改变进水水温和流速得到一系列实验数据，再通过威尔逊（Wilson）图解法同时得到管内外换热关联式；给出了不同管内流速时管外沸腾换热性能对比图；Turbo-BⅡ管管外沸腾换热性能比普通低翅管提高了1．6-2．5倍；在实验条件范围内，Turbo—BⅡ管内热阻是控制热阻。Pool boiling and internal heat transfer coefficients are experimentally analyzed of a kind of enhanced tube（Turbo- B Ⅱ ） with the refrigerant R22 used widely. The heating medium is water in tube. Maintain heat flux and saturation pressure constant, while vary inlet water temperature and velocity, then a series of data are obtained, inner and outer heat transfer coefficient correlations can simultaneously be figured out with Wilson Plot method. The heat transfer coefficient of enhanced tube is 1.6 - 2.5 times larger than that of low - fin tube. Within experimental condition, the inner thermal resistance dominates.

关 键 词：热工学 换热系数 Wilson图解法 强化传热 池沸腾 

分 类 号：TB64[一般工业技术—制冷工程] TK172[动力工程及工程热物理—热能工程]