Empirical correlations for heat transfer and flow friction characteristics of herringbone wavy fin-and-tube heat exchangers

2002 ◽  
Vol 25 (5) ◽  
pp. 673-680 ◽  
Author(s):  
Chi-Chuan Wang ◽  
Young-Ming Hwang ◽  
Yur-Tsai Lin
Keyword(s):  
Heat Transfer ◽  
Heat Exchangers ◽  
Empirical Correlations ◽  
Friction Characteristics ◽  
Flow Friction

The Effect of Geometrical Features on Air-Side Heat Transfer and Friction Characteristics, and Optimization of a Large-Size Plain Fin-and-Tube Heat Exchanger by 3-D Numerical Simulation

2009 ◽  
Author(s):  
M. Izadi ◽  
D. K. Aidun ◽  
P. Marzocca ◽  
H. Lee
Keyword(s):  
Heat Transfer ◽  
Numerical Modeling ◽  
Heat Exchanger ◽  
Heat Exchangers ◽  
Simple Algorithm ◽  
Operating Conditions ◽  
Friction Characteristics ◽  
Tube Heat Exchanger ◽  
Large Size ◽  
Geometrical Features

The effect of geometrical features on the air-side heat transfer and friction characteristics of an industrial plain fin-and-tube heat exchanger is investigated by 3-D numerical modeling and simulations. The heat exchanger has been designed and employed as an intercooler in a gas power plant and is a large-size compact heat exchanger. Most of the available design correlations developed so far for plain fin–and–tube heat exchangers have been prepared for small-size exchangers and none of them fits completely to the current heat exchanger regarding the geometrical limitations of correlations. It is shown that neglecting these limitations and applying improper correlations may generate considerable amount of error in the design of such a large-size heat exchanger. The geometry required for numerical modeling is produced by Gambit® software and the boundary conditions are defined regarding the real operating conditions. Then, three-dimensional simulations based on the SIMPLE algorithm in laminar flow regime are performed by FLUENT™ code. The effect of fin pitch, tube pitch, and tube diameter on the thermo-hydraulic behavior of the heat exchanger is studied. Some variations in the design of the heat exchanger are suggested for optimization purposes. It is finally concluded that the current numerical model is a powerful tool to design and optimize of large-size plain fin-and-tube heat exchangers with acceptable accuracy.

Offset Rectangular Plate-Fin Surfaces—Heat Transfer and Flow Friction Characteristics

1968 ◽  
Vol 90 (3) ◽  
pp. 218-228 ◽  
Author(s):  
A. L. London ◽  
R. K. Shah
Keyword(s):  
Heat Transfer ◽  
Rectangular Plate ◽  
Density Ratio ◽  
Stanford University ◽  
Heat Transfer Area ◽  
Design Data ◽  
Friction Characteristics ◽  
Area Density ◽  
Flow Friction

Basic heat transfer and flow friction design data are presented for eight offset rectangular plate-fin surfaces. One of the configurations had a heat transfer area density ratio of 1772 sq ft/ cu ft, one of the most compact plate-fin surfaces ever tested at Stanford University.

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