A condensation heat transfer correlation for millimeter-scale tubing with flow regime transition

2002 ◽  
Vol 26 (5) ◽  
pp. 473-485 ◽  
Author(s):  
Wei-Wen William Wang ◽  
Thomas D Radcliff ◽  
Richard N Christensen
Keyword(s):  
Heat Transfer ◽  
Flow Regime ◽  
Condensation Heat Transfer ◽  
Regime Transition ◽  
Heat Transfer Correlation ◽  
Flow Regime Transition

Condensation Heat Transfer of Soliman Flow Pattern in Mini-Channel

2006 ◽  
Author(s):  
Q. Chen ◽  
R. S. Amano
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Flow Pattern ◽  
Flow Regime ◽  
Flow Region ◽  
Condensation Heat Transfer ◽  
Heat Transfer Correlation ◽  
Transfer Coefficients ◽  
Annular Regime ◽  
Fin Tubes

The condensation heat transfer for R134a in the two kinds of in-tube three-dimensional (3-D) micro-fin tubes with different geometries is experimentally investigated. Based on the flow pattern observations, the flow patterns in the Soliman flow regime map are divided into two-flow regimes; one with the vapor-shear-dominant annular regime and the other with the gravitational-force-dominant stratified-wavy regime. In the annular regime, the heat transfer coefficients of the two kinds of in-tube 3-D micro-fin tubes decreases as the vapor quality decreases. The regressed condensation heat transfer correlation from the experimental data of the annular flow region is obtained. The dispersibility of the experimental data is inside the limits of ±25%. In the stratified-wavy regime, the average heat transfer coefficient of the two kinds of in-tube 3-D micro fin tubes increases as the mass flux increases and the number of micro fins in the 3-D micro-fin tube is not the controlling factor for performance of a condensation heat transfer. The regressed condensation heat transfer correlation of the stratified-wavy flow regime is experimentally obtained. The dispersibility of the experimental data is inside the limits of ±22%. Combined with the criteria of flow pattern transitions, the correlations can be used for the design of a condenser with 3-D micro fin tubes.

Condensation heat transfer correlation for smooth tubes in annular flow regime

2006 ◽  
Vol 20 (8) ◽  
pp. 1275-1283 ◽  
Author(s):  
Donghyouck Han ◽  
C. Moon ◽  
C. Park ◽  
Kyu-Jung Lee
Keyword(s):  
Heat Transfer ◽  
Flow Regime ◽  
Annular Flow ◽  
Condensation Heat Transfer ◽  
Heat Transfer Correlation ◽  
Smooth Tubes

Low Bond Number Two-Phase Flow Regime Transition from Slug to Annular Wavy Flow in a Microchannel

2003 ◽  
Vol 125 (4) ◽  
pp. 544-544 ◽  
Author(s):  
Sang Young Son ◽  
Jeffrey S. Allen ◽  
Kenneth O. Kihm
Keyword(s):  
Flow Regime ◽  
Two Phase Flow ◽  
Bond Number ◽  
Phase Flow ◽  
Regime Transition ◽  
Two Phase ◽  
Flow Regime Transition

Influence of Operating Pressure on Gas Holdup and Flow Regime Transition in a Bubble Column

2010 ◽  
Vol 43 (10) ◽  
pp. 829-832 ◽  
Author(s):  
Hiroaki Matsubara ◽  
Kiyoshi Naito ◽  
Hideharu Kuwamoto ◽  
Toshiyuki Sakaguchi
Keyword(s):  
Flow Regime ◽  
Bubble Column ◽  
Gas Holdup ◽  
Operating Pressure ◽  
Regime Transition ◽  
Flow Regime Transition

scholarly journals Effect of viscosity on homogeneous–heterogeneous flow regime transition in bubble columns

2003 ◽  
Vol 96 (1-3) ◽  
pp. 15-22 ◽  
Author(s):  
M.C. Ruzicka ◽  
J. Drahoš ◽  
P.C. Mena ◽  
J.A. Teixeira
Keyword(s):  
Flow Regime ◽  
Bubble Columns ◽  
Regime Transition ◽  
Heterogeneous Flow ◽  
Flow Regime Transition

Prediction of Flow-Regime Transition over a Stepped Channel

2019 ◽  
Vol 145 (7) ◽  
pp. 06019004 ◽  
Author(s):  
Weichen Ren ◽  
Jianhua Wu ◽  
Fei Ma ◽  
Yu Zhou
Keyword(s):  
Flow Regime ◽  
Regime Transition ◽  
Flow Regime Transition
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