HEAT TRANSFER CRISIS AT WATER BOILING IN ANNULAR CHANNELS WITH EXTERNAL AND INTERNAL HEATING

1970 ◽  
Author(s):  
V. I. Tolubinsky ◽  
A. K. Litoshenko ◽  
V. L. Shevtsov
Keyword(s):  
Heat Transfer ◽  
Internal Heating ◽  
Heat Transfer Crisis ◽  
Annular Channels

Experimental study of a heat transfer crisis

1964 ◽  
Vol 16 (5) ◽  
pp. 515-521 ◽  
Author(s):  
V. N. Smolin ◽  
V. K. Polyakov ◽  
V. I. Esikov
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Transfer Crisis

Improving the heat transfer in annular channels

1972 ◽  
Vol 23 (1) ◽  
pp. 815-817 ◽  
Author(s):  
�. K. Kalinin ◽  
G. A. Dreitser ◽  
V. A. Kuz'minov
Keyword(s):  
Heat Transfer ◽  
Annular Channels

Research of heat transfer crisis in a microchannel without coating and with coating from nanoparticles during boiling water

2020 ◽  
Vol 12 (6) ◽  
pp. 252-259
Author(s):  
Yury Kuzma-Kichta ◽  
Alexander Lavrikov ◽  
Michael Shustov ◽  
Ekaterina Kustova ◽  
Nikita Ivanov ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Boiling Water ◽  
Heat Transfer Crisis

Electrohydrodynamic (EHD) Flow and Convective Boiling Augmentation in Single-Component Horizontal Annular Channels

2000 ◽  
Author(s):  
James S. Cotton ◽  
JenShih Chang ◽  
Mamdouh Shoukri ◽  
Tracey Smith-Pollard
Keyword(s):  
Heat Transfer ◽  
Heat Fluxes ◽  
Electrode Position ◽  
Convective Boiling ◽  
Annular Channels ◽  
Mass Fluxes ◽  
Hfc 134A ◽  
Order Of Magnitude ◽  
Flow Configurations ◽  
Visualization Experiments

Abstract In order to explore the mechanics of EHD induced flow and heat transfer augmentation, an experimental study of the tube-side boiling heat transfer of refrigerant HFC-134a has been conducted in a single-pass, counter-flow heat exchanger. The electrode position was arranged concentric to the tube. Experiments are conducted for inlet qualities of 0% to 60%, mass fluxes from 100 kg/m2s to 500 kg/m2s, heat fluxes of 10 kW/m2 and 20 kW/m2, and applied voltage from 0 kV to 8 kV DC. The threshold of EHD effects were analysed by a proposed dimensional analysis which predicts that the EHD forces become significant when the Dielectric Electric Rayleigh number is of the same order of magnitude as the square of the liquid Reynolds number, Eℓε ≈ Re ℓ 2 . This criterion is supported by experimental evidence. Flow visualization experiments have shown that, when the proposed dimensionless criterion is satisfied, EHD body forces may have a strong influence on the liquid-phase and consequently the flow pattern within the channel. The various flow configurations clearly affect heat transfer and pressure loss and need to be considered in any attempt to identify the effects of an applied electric field.

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