Experimental Study of Electrohydrodynamically Augmented Condensation Heat Transfer on a Smooth and an Enhanced Tube

1996 ◽  
Vol 118 (2) ◽  
pp. 499-502 ◽  
Author(s):  
M. Wawzyniak ◽  
J. Seyed-Yagoobi
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Condensation Heat Transfer ◽  
Enhanced Tube

Experimental Study on Condensation of R134a inside Horizontal Inner-Micro-Fin Tubes

2011 ◽  
Vol 354-355 ◽  
pp. 753-758
Author(s):  
Qi Wei Chen ◽  
Xin Ping Ouyang
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Mass Velocity ◽  
Condensation Heat Transfer ◽  
Enhanced Tube ◽  
Glycol Solution ◽  
Fin Tubes ◽  
Condensation Heat Transfer Coefficient

An experimental study of condensation heat transfer of R134a on horizontal inner enhanced tubes was conducted. The tested tubes were inner-micro-fin tubes, named tube A and tube B, respectively. The tested pieces were double-pipe condensers. The glycol solution flowed in the space between outer surface of the enhanced tube and inner surface of outer tube. In the experiment, condensing temperature inside the enhanced tube was 51°C, and the flow velocity of glycol solution was 3.35m/s. The inlet temperature of glycol solution changed according to mass velocity of refrigerant, to maintain certain degree of undercooling of outlet refrigerant. The research showed that the condensation heat transfer coefficient of both tubes increased with the increasing mass velocity of refrigerant. when the mass velocity of refrigerant increased from 300kg/m2s to 700kg/m2s, the condensation heat transfer coefficient in tube A was 1.87% to 6.28% higher than that of tube B. However, the flow resistance of the refrigerant in tube B was 9.56% to 11.05% higher than in tube A. The structure of tube A was superior to that of tube B.

scholarly journals Experimental Study on R245fa Condensation Heat Transfer in Horizontal Smooth Tube and Enhanced Tube

2017 ◽  
Vol 142 ◽  
pp. 4169-4175 ◽  
Author(s):  
Shengchun Liu ◽  
Ming Song ◽  
Baomin Dai ◽  
Yuan Tian ◽  
Mengjie Song ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Condensation Heat Transfer ◽  
Smooth Tube ◽  
Enhanced Tube

Experimental study of the enhancement of condensation heat transfer on downward-facing horizontal surfaces.

1990 ◽  
Vol 56 (525) ◽  
pp. 1493-1501
Author(s):  
Hiroshi HONDA ◽  
Shigeru NOZU ◽  
Bunken UCHIMA ◽  
Hiroshi FUKUMORI ◽  
Tsutomu KOBAYASHI
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Condensation Heat Transfer

scholarly journals Study on condensation heat transfer of binary of immiscible liquids. Experimental study.

1991 ◽  
Vol 57 (535) ◽  
pp. 1009-1013
Author(s):  
Akira TAKIMOTO ◽  
Tsunenobu TERANISHI ◽  
Kanji HANEDA ◽  
Yujiro HAYASHI
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Condensation Heat Transfer ◽  
Immiscible Liquids
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