Experimental study of thermal-hydraulic performance of cam-shaped tube bundle with staggered arrangement

被引：39

作者：

Bayat, Hamidreza ^{[1
]}

Lavasani, Arash Mirabdolah ^{[2
]}

Maarefdoost, Taher ^{[1
]}

机构：

[1] Islamic Azad Univ, Cent Tehran Branch, Young Researchers & Elite Club, Tehran, Iran

[2] Islamic Azad Univ, Dept Mech Engn, Cent Tehran Branch, Tehran, Iran

来源：

ENERGY CONVERSION AND MANAGEMENT | 2014年 / 85卷

关键词：

Heat exchanger; Tube bundle; Experimental heat transfer; Cam-shaped tube; Cross-flow; CONVECTION HEAT-TRANSFER; ELLIPTIC TUBES; CROSS-FLOW; OPTIMIZATION; EXCHANGER; SURFACES; BANKS;

D O I：

10.1016/j.enconman.2014.06.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Flow and heat transfer from cam-shaped tube bank in staggered arrangement is studied experimentally. Tubes were located in test section of an open loop wind tunnel with two longitudinal pitch ratios 1.5 and 2. Reynolds number varies in range of 27,000 <= Re-D <= 42,500 and tubes surface temperature is between 78 and 85 degrees C. Results show that both drag coefficient and Nusselt number depends on position of tube in tube bank and Reynolds number. Tubes in the first column have maximum value of drag coefficient, while its Nusselt number is minimum compared to other tubes in tube bank. Moreover, pressure drop from this tube bank is about 92-93% lower than circular tube bank and as a result thermal-hydraulic performance of this tube bank is about 6 times greater than circular tube bank. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：470 / 476

页数：7

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