Experimental study on boiling heat transfer in a three-rod bundle at near-critical pressure

2019 ◽  
Vol 131 ◽  
pp. 196-209 ◽  
Author(s):  
Shuo Chen ◽  
Yao Xiao ◽  
Hanyang Gu
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Boiling Heat Transfer ◽  
Critical Pressure ◽  
Rod Bundle

Experimental Study on the Effect of Orientation of Heating Circular Plate on Film Boiling Heat Transfer for Fluorocarbon Refrigerant R-11

1978 ◽  
Vol 100 (4) ◽  
pp. 624-628 ◽  
Author(s):  
N. Seki ◽  
S. Fukusako ◽  
K. Torikoshi
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Circular Plate ◽  
Boiling Heat Transfer ◽  
Film Boiling ◽  
Brass Plate ◽  
Bottom Side ◽  
Film Coefficient

The characteristics of film boiling heat transfer from a heated horizontal circular brass plate to a pool of fluorocarbon R-11 are examined for the case in which only the top side of the plate is in contact with the liquid (facing upward) and for the case in which the bottom side of the plate is in contact with the liquid (facing downward). It is found that the film coefficient for the facing downwards orientation of the plate was found to be closely correlated by the following: Nu=0.35(L/CpΔT)Gr0.25·Pr0.25

Evaluation of General Correlations for Heat Transfer During Boiling of Saturated Liquids in Tubes and Annuli

2005 ◽  
Author(s):  
M. Mohammed Shah
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Large Deviations ◽  
Boiling Heat Transfer ◽  
Mean Deviation ◽  
Data Sets ◽  
Vapor Quality ◽  
Dimensional Parameters ◽  
Vertical Tubes ◽  
Reduced Pressures

Six of the most verified correlations for boiling heat transfer were compared to data for horizontal and vertical tubes and annuli. The correlations evaluated were: Chen (1966), Shah (1982), Gungor and Winterton (1986), Liu & Winterton (1991), Kandlikar (1990), and Steiner and Taborek (1992). The database used to evaluate these correlations included 29 fluids: water, refrigerants, cryogens, organic and inorganic chemicals. The data cover reduced pressures from 0.005 to 0.783, mass flux from 28 to 11071 kg/m2s, vapor quality from 0 to 0.95, and boiling number from 0.000026 to 0.00742. The correlations of Shah and Gungor & Winterton gave the best agreement with data with a mean deviation of about 17.5%, only a couple of data sets showing large deviations. The paper presents and discusses the results of this study. Included are tables giving the range of dimensional and non-dimensional parameters covered by each experimental study.

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