Condensation Heat Transfer Characteristics of Hydrofluoroolefin Refrigerant R1234YF as an R134a Alternative

2018 ◽  
Vol 12 (10) ◽  
pp. 807
Author(s):  
Talaat A. Ibrahim ◽  
Mohamed A. M. Hassan
Keyword(s):  
Heat Transfer ◽  
Condensation Heat Transfer ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

scholarly journals Condensation Heat Transfer Characteristics of R-1234yf with the Variation of Tube Diameter

2021 ◽  
Vol 41 (4) ◽  
pp. 161-171
Author(s):  
Sung-Hoon Seol ◽  
Jung-In Yoon ◽  
Joon-Hyuk Lee ◽  
Seung-Yun Cha ◽  
Su-Jeong Ha
Keyword(s):  
Heat Transfer ◽  
Tube Diameter ◽  
Condensation Heat Transfer ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

Experimental Study on Condensation Heat Transfer and Flow Modes of R245fa on Enhanced Surface Tubes

2015 ◽  
Vol 23 (02) ◽  
pp. 1550014 ◽  
Author(s):  
Daisuke Jige ◽  
Tomonobu Matsuno ◽  
Norihiro Inoue
Keyword(s):  
Heat Transfer ◽  
Saturation Temperature ◽  
Condensation Heat Transfer ◽  
Flow Mode ◽  
Heat Transfer Characteristics ◽  
Enhanced Heat Transfer ◽  
Finned Tubes ◽  
Transfer Characteristics ◽  
Grooved Tube ◽  
Enhanced Surface

The present study experimentally investigated the condensation heat transfer characteristics and condensate flow mode of R245fa on horizontal low-finned and microscopic-grooved tubes. Five low-finned tubes and a microscopic-grooved tube with tube diameters at the fin tip of approximately 19 mm were used. Experiments were conducted at a saturation temperature of 40°C. The fundamental heat transfer characteristics of the low-finned and microscopic-grooved tubes were experimentally investigated to clarify the flow modes of the condensate and the efficacy of the enhanced heat transfer.

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