Critical Heat Flux in a Circumferentially Non-Uniformly Heated Tube

2012 ◽  
Vol 26 (2) ◽  
pp. 178-191
Author(s):  
Takeyuki AMI ◽  
Takuya HIROSE ◽  
Noriko NAKAMURA ◽  
Hisashi UMEKAWA ◽  
Mamoru OZAWA
Keyword(s):  
Heat Flux ◽  
Critical Heat Flux ◽  
Heated Tube

Critical Heat Flux During Natural Circulation Boiling of Saturated Liquid in Annulus With Uniformly Heated Outer Tube

1999 ◽  
Vol 122 (1) ◽  
pp. 74-79 ◽  
Author(s):  
M. Monde ◽  
Y. Mitsutake
Keyword(s):  
Heat Flux ◽  
Critical Heat Flux ◽  
Natural Circulation ◽  
Outer Tube ◽  
Tube Length ◽  
Equivalent Diameter ◽  
Heated Tube ◽  
Annular Gap ◽  
Gap Width ◽  
Annular Tube

Critical heat flux has been measured during natural circulation boiling of water and R113 on a uniformly heated outer tube in a vertical annular tube. The experiment was carried out using water at atmospheric pressure and R113 at a pressure of 0.1–0.4 MPa for the annular gap width of S=1.0-4.0 mm, the heated tube diameter of 9–17 mm, and the annular tube length of 100–1000 mm. The similarity of critical heat flux between annular configurations of either inner or outer heated tubes and a simple heated tube can be clearly elucidated based on the characteristics of the heated equivalent diameter. The critical heat flux measured for S=1 mm can be predicted accurately by existing correlation for the annular tube and for clearance larger than S=4 mm by existing correlation for the single tube. A new correlation for medium clearances from S=1 to 4 mm has been developed to connect between both the existing correlations. [S0022-1481(00)01901-0]

Critical heat flux in non-uniformly heated tube under low-pressure and low-mass-flux condition

2005 ◽  
Vol 35 (1) ◽  
pp. 47-60 ◽  
Author(s):  
Hisashi Umekawa ◽  
Tetsuo Kitajima ◽  
Mio Hirayama ◽  
Mamoru Ozawa ◽  
Kaichiro Mishima ◽  
...  
Keyword(s):  
Heat Flux ◽  
Critical Heat Flux ◽  
Mass Flux ◽  
Low Pressure ◽  
Heated Tube ◽  
Flux Condition ◽  
Low Mass

Forced Convective Boiling Heat Transfer and Critical Heat Flux in a Non-Uniform Circumferential Heated Tube

2003 ◽  
Vol 2003.78 (0) ◽  
pp. _8-11_-_8-12_
Author(s):  
Tetsuo KITAJIMA ◽  
Hisashi UMEKAWA ◽  
Mamoru OZAWA ◽  
Kaichiro MISHIMA ◽  
Yasushi SAITO
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Critical Heat Flux ◽  
Boiling Heat Transfer ◽  
Convective Boiling ◽  
Heated Tube

scholarly journals Critical Heat Flux in Non-uniformly Heated Tube under Low-Pressure and Low-Mass-Flux Condition

2005 ◽  
Vol 71 (703) ◽  
pp. 939-946
Author(s):  
Hisashi UMEKAWA ◽  
Tetsuo KITAJIMA ◽  
Mio HIRAYAMA ◽  
Mamoru OZAWA ◽  
Kaichiro MISHIMA ◽  
...  
Keyword(s):  
Heat Flux ◽  
Critical Heat Flux ◽  
Mass Flux ◽  
Low Pressure ◽  
Heated Tube ◽  
Flux Condition ◽  
Low Mass
Sign in / Sign up

Export Citation Format

Share Document