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Abstract�� Based on the previous reported numerical simulation on falling film flow outside elliptical tubes,experimental study was conducted on the liquid film thickness outside elliptical tube and the heat transfer of falling film evaporation.The results showed that the liquid film thickness of numerical simulation basically reflected the experimental data with about 8% deviation range,so the numerical simulation was approved to be correct.The heat transfer coefficient of elliptical tube with long to short axis ratio of 1.5 is higher 20%—22% than that of the round tube,so elliptical tube can enhance heat transfer obviously.

Keywords�� elliptical tube falling-film evaporation heat transfer experiment

Received 2012-03-28;

Fund:

��Һ��ֺ��ר��Ŀ��201205030��; ��Һ��ֺ��ר��Ŀ��201205016��

Corresponding Authors: �봺�� (022)87898150��E-mail��qi_chunhua@163.com�� Email: qi_chunhua@163.com

About author: �봺��(1977-)��ɽ��ˣ��߼��ʦ��ִ��󵭻��о��

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�봺��, ��, ��, �Ժ��.��Բ��ҺĤ��ֵģ�⼰��ʵ��о��ʵ��о�[J]. ��ѧ��ҵ�빤��, 2012,29(5): 43-47

QI Chun-Hua, FENG Hou-Jun, XING Yu-Lei, ZHAO He-Li.Numerical Simulation and Experimental Studies on Falling Film Outside Elliptical Tube (��): Experiment Study[J]. Chemcial Industry and Engineering, 2012,29(5): 43-47