Study of hydrodynamics and conjugate heat exchange on the stabilization section in the flow of a heat carrier in a bundle of finned tubes

1984 ◽  
Vol 46 (2) ◽  
pp. 130-133
Author(s):  
A. A. Mikhalevich ◽  
V. A. Nemtsev ◽  
V. I. Nikolaev ◽  
L. N. Shegidevich
Keyword(s):  
Heat Exchange ◽  
Heat Carrier ◽  
Finned Tubes ◽  
Conjugate Heat Exchange

Nonsteady conjugate heat exchange during liquid flow in coaxial channels

1986 ◽  
Vol 50 (2) ◽  
pp. 162-170
Author(s):  
P. M. Kolesnikov ◽  
V. I. Bubnovich
Keyword(s):  
Heat Exchange ◽  
Liquid Flow ◽  
Conjugate Heat Exchange

Tube Banks Heat Transfer Enhancement Using Conical Fins

2010 ◽  
Author(s):  
Ignacio Carvajal-Mariscal ◽  
Florencio Sanchez-Silva ◽  
Georgiy Polupan
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Pressure Drop ◽  
Finned Tube ◽  
Hot Water ◽  
Experimental Results ◽  
Tube Bank ◽  
Finned Tubes ◽  
Tube Banks ◽  
Annular Fins

In this work the heat transfer and pressure drop experimental results obtained in a two step finned tube bank with conical fins are presented. The tube bank had an equilateral triangle array composed of nine finned tubes with conical fins inclined 45 degrees in respect with the tube axis. The heat exchange external area of a single tube is approximately 0.07 m2. All necessary thermal parameters, inlet/outlet temperatures, mass flows, for the heat balance in the tube bank were determined for different air velocities, Re = 3400–18400, and one constant thermal charge provided by a hot water flow with a temperature of 80 °C. As a result, the correlations for the heat transfer and pressure drop calculation were obtained. The experimental results were compared against the analytical results for a tube bank with annular fins with the same heat exchange area. It was found that the proposed tube bank using finned tubes with conical fins shows an increment of heat transfer up to 58%.

Effect of Length Ratio on Heat Exchange Rate by a Triangular Heat Generating Conductive Body Inside an Enclosure

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Mohammad Ahmad ◽  
Harish Chandra Thakur
Keyword(s):  
Heat Exchange ◽  
Numerical Analysis ◽  
Simple Algorithm ◽  
Length Ratio ◽  
Convective Term ◽  
Square Enclosure ◽  
Numerical Investigations ◽  
Discrete Equations ◽  
Conjugate Heat Exchange ◽  
Triangular Block

This paper presents a numerical analysis of the conjugate heat exchange inside a square enclosure full of a copper-water nanofluid. The enclosure also contains a heat-generating solid triangular block (a source of heat) at the center. While the horizontal walls of the enclosure are viewed as adiabatic, its perpendicular walls are operated at a consistently low temperature. The second order upwind scheme is used for the convective term and SIMPLE algorithm, to lead the numerical analysis and solve the discrete equations using the commercial software FLUENT 15.0. The consequences of the numerical investigations are then used to clear up the effect of length-ratio and transfer of heat. As per observations, the expansion in the length-ratio influences the rate of heat transfer.

Mathematical simulation of conjugate heat exchange in heating furnaces with a moving bottom

2006 ◽  
Vol 79 (3) ◽  
pp. 419-428 ◽  
Author(s):  
V. I. Timoshpol’skii ◽  
M. L. German ◽  
P. S. Grinchuk ◽  
S. M. Kabishov
Keyword(s):  
Heat Exchange ◽  
Mathematical Simulation ◽  
Heating Furnaces ◽  
Conjugate Heat Exchange
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