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液幕状气液两相流传热特性的实验研究
引用本文:宋洪鹏,周屈兰,惠世恩,徐通模.液幕状气液两相流传热特性的实验研究[J].西安交通大学学报,2004,38(5):533-536.
作者姓名:宋洪鹏  周屈兰  惠世恩  徐通模
作者单位:西安交通大学动力工程多相流国家重点实验室,710049,西安
基金项目:国家自然科学基金资助项目(50276051).
摘    要:针对强化脱硫塔内气液两相流的传热与传质,建立了一种新的气液两相流型——液幕状气液两相流.根据该流型的特点,进行了气液两相传热实验,分析了气液两相流中的温度场分布,并研究了传热系数与液气比之间的关系.结果表明:无论顺流或逆流,在空气流速一定时,传热系数都随着液气比的增大而减小,并且液幕顶部是传热效果最佳的位置,可以组织多层液幕来降低工业成本.得到的传热系数与液气比之间的关联式为工程设计和更深一步的研究工作提供了技术标准.

关 键 词:气液两相流  传热系数  实验研究
文章编号:0253-987X(2004)05-0533-04
修稿时间:2003年10月13

Experimental Study on Heat Transfer of Gas-Liquid Screen
Song Hongpeng,Zhou Qulan,Hui Shien,Xu Tongmo.Experimental Study on Heat Transfer of Gas-Liquid Screen[J].Journal of Xi'an Jiaotong University,2004,38(5):533-536.
Authors:Song Hongpeng  Zhou Qulan  Hui Shien  Xu Tongmo
Abstract:To intensify heat transfer and mass transfer of gas-liquid two-phase flow in the desulfurization tower, a new flow type called 'gas-liquid screen' is designed. According to the characters of this flow type, heat transfer experiment is conducted to analyze the distribution of temperature and the relation between heat transfer coefficient and ratio of liquid to gas. The results show that whether in concurrent or countercurrent flows the heat transfer coefficient increases with ratio of liquid to gas decreasing as the gas velocity is stable. The opitimum position of heat transfer is at the top of the 'gas-liquid screen'. So multilayer 'gas-liquid screen' can be arranged to reduce the industry cost. A correlation between the heat transfer coefficient and the ratio of liquid to gas is obtained which provides a practical criterion for both engineering and the further investigation.
Keywords:gas-liquid flow  heat transfer coefficient  experimental study
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