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

作     者：Jiin-Yuh Jang Chien-Nan Lin 

作者机构：Natl Cheng Kung Univ Dept Mech Engn Tainan 70101 Taiwan 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2002年第11卷第3期

页      面：249-254页

核心收录：

学科分类：080701[工学-工程热物理] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Financial support for this work was provided by the "National Science Council of Taiwan"  under contract NSC 90-2212-E006-125 

主　　题：fin efficiency plate fin-tube partially and fully wet. 

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/m2K to h = 80 W/m2K) and air relative humidity over the full range from φ= 0 % to φ= 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 10~20% 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.