Two-Dimensional Fin Efficiency of Plate Fin-Tube Heat Exchangers Under Partially and Fully Wet Conditions

被引：5
|
作者：
Jang, Jiin-Yuh [1 ]
Lin, Chien-Nan [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan
来源：
JOURNAL OF THERMAL SCIENCE | 2002年 / 11卷 / 03期
关键词：
fin efficiency; plate fin-tube; partially and fully wet;
D O I：
10.1007/s11630-002-0062-9
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents the two-dimensional analysis for the efficiency of continuous plate fin-tube heat exchangers in staggered and in-lined arrangements under the dry, partially wet, and fully wet conditions for different heat transfer coefficient (h = 20 W/m(2)K to h = 80 W/m(2)K) and air relative humidity over the full range from phi = 0 % to phi = 100%. It is shown that the fin efficiencies of the staggered arrangement are higher than those for the in-lined arrangement, and the fully wet fin efficiency is 10 similar to 20% lower than that for a dry fin. The conventional 1-D sector method underestimates the fin efficiency up to 4 % as compared to the 2-D analysis.
引用
收藏
页码：249 / 254
页数：6
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