Correlations for evaporation heat transfer coefficient and two-phase friction factor for R-134a flowing through horizontal corrugated tubes

被引：41
作者：
Laohalertdecha, Suriyan [1 ,2 ]
Dalkilic, Ahmet Selim [3 ]
Wongwises, Somchai [1 ,4 ]
机构：
[1] King Mongkuts Univ Technol Thonburi, Dept Mech Engn, Thermal Engn & Multiphase Flow Res Lab FUTURE, Bangkok 10140, Thailand
[2] King Mongkuts Univ Technol Thonburi, JGSEE, Bangkok 10140, Thailand
[3] YTU, Heat & Thermodynam Div, Dept Mech Engn, TR-34349 Istanbul, Turkey
[4] Royal Inst Thailand, Acad Sci, Bangkok 10300, Thailand
来源：
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2011年 / 38卷 / 10期
关键词：
Two-phase friction factor; Heat transfer; Temperature; R-134a; Corrugated tube; TWISTED TAPE INSERTS; TURBULENT-FLOW; PRESSURE-DROP; CONDENSATION; ENHANCEMENT; COMBINATION; PREDICTION; ANNULUS; COIL;
D O I：
10.1016/j.icheatmasstransfer.2011.08.014
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Correlations for the evaporation heat transfer coefficient and two-phase friction factor of R-134a flowing through horizontal corrugated tubes are proposed. In the present study, the test section is a horizontal counter-flow concentric tube-in-tube heat exchanger with R-134a flowing in the inner tube and hot water flowing in the annulus. Smooth tube and corrugated tubes with inner diameters of 8.7 mm and lengths of 2000 mm are used as the inner tube. The corrugation pitches are 5.08, 6.35, and 8.46 mm and the corrugation depths are 1, 1.25, and 1.5 mm, respectively. The outer tube is made from smooth copper tube with an inner diameter of 21.2 mm. The correlations presented are formed by using approximately 200 data points for five different corrugated tube geometries and are then proposed in terms of Nusselt number, equivalent Reynolds number, Prandtl number, corrugation pitch and depth, and inside diameter. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1406 / 1413
页数：8
相关论文
共 24 条
[1]  
Akers W.W., 1959, Chemical Engineering Progress Symposium Series, V55, P171
[2]  
[Anonymous], THESIS TEXAS TU LUBB
[3]  
[Anonymous], HEAT MASS TRANSFER
[4]   Heat transfer enhancement in a corrugated tube [J].
Barba, A ;
Rainieri, S ;
Spiga, M .
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2002, 29 (03) :313-322
[5]   Convective boiling pressure drop of refrigerant R-134a in horizontal smooth and microfin tubes [J].
Filho, EPB ;
Jabardo, JMS ;
Barbieri, PEL .
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2004, 27 (08) :895-903
[6]   Condensation heat transfer and flow characteristics of R-134a flowing through corrugated tubes [J].
Laohalertdecha, Suriyan ;
Wongwises, Somchai .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2011, 54 (11-12) :2673-2682
[7]   An experimental study into the evaporation heat transfer and flow characteristics of R-134a refrigerant flowing through corrugated tubes [J].
Laohalertdecha, Suriyan ;
Wongwises, Somchai .
INTERNATIONAL JOURNAL OF REFRIGERATION, 2011, 34 (01) :280-291
[8]   The effects of corrugation pitch on the condensation heat transfer coefficient and pressure drop of R-134a inside horizontal corrugated tube [J].
Laohalertdecha, Suriyan ;
Wongwises, Somchai .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2010, 53 (13-14) :2924-2931
[9]   Flow boiling in horizontal smooth tubes: New heat transfer results for R-134a at three saturation temperatures [J].
Lima, Ricardo J. da Silva ;
Quiben, Jesus Moreno ;
Thome, John R. .
APPLIED THERMAL ENGINEERING, 2009, 29 (07) :1289-1298
[10]   CONDENSATION OF A ZEOTROPIC CFC114-CFC113 REFRIGERANT MIXTURE IN THE ANNULUS OF A DOUBLE-TUBE COIL WITH AN ENHANCED INNER TUBE [J].
NOZU, S ;
HONDA, H ;
NISHIDA, S .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 1995, 11 (04) :364-371
123