A Review of Enhanced Heat Transfer in Nucleate Pool Boiling of Aqueous Surfactant and Polymeric Solutions

1999 ◽  
Vol 6 (2-4) ◽  
pp. 135-150 ◽  
Author(s):  
Vivek M. Wasekar ◽  
Raj M. Manglik
Keyword(s):  
Heat Transfer ◽  
Pool Boiling ◽  
Nucleate Pool Boiling ◽  
Enhanced Heat Transfer ◽  
Polymeric Solutions

Pseudoplasticity and Dynamic Interfacial Tension Relaxation Effects on Nucleate Pool Boiling in Aqueous Polymeric Liquids

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
R. M. Manglik ◽  
A. D. Athavale
Keyword(s):  
Heat Transfer ◽  
Interfacial Tension ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Shear Thinning ◽  
Heat Fluxes ◽  
Nucleate Pool Boiling ◽  
Dynamic Surface ◽  
Boiling Regime ◽  
Polymeric Solutions

Nucleate pool boiling heat transfer and its ebullient dynamics in polymeric solutions at atmospheric pressure saturated conditions are experimentally investigated. Three grades of hydroxyethyl cellulose (HEC) are used, which have intrinsic viscosity in the range 5.29 ≤ [η] ≤ 10.31 [dl/g]. Their aqueous solutions in different concentrations, with zero-shear viscosity in the range 0.0021 ≤ η0 ≤ 0.0118 [N⋅s/m2], exhibit shear-thinning rheology in varying degrees, as well as gas–liquid interfacial tension relaxation and wetting. Boiling heat transfer in solutions with constant molar concentrations of each additive, which are greater than their respective critical polymer concentration C*, is seen to have anomalous characteristics. There is degradation in the heat transfer at low heat fluxes, relative to that in the solvent, where the postnucleation bubble dynamics in the partial boiling regime is dominated by viscous resistance of the polymeric solutions. At higher heat fluxes, however, there is enhancement of boiling heat transfer due to a complex interplay of pseudoplasticity and dynamic surface tension effects. The higher frequency vapor bubbling train with high interfacial shear rates in this fully developed boiling regime tends to be influenced by increasing shear-thinning and time-dependent differential interfacial tension relaxation at the dynamic gas–liquid interfaces.

Nucleate Pool Boiling Heat Transfer in Microgravity

1998 ◽  
Vol 29 (1-3) ◽  
pp. 196-207
Author(s):  
Haruhiko Ohta ◽  
Koichi Inoue ◽  
Suguru Yoshida ◽  
Tomoji S. Morita
Keyword(s):  
Heat Transfer ◽  
Boiling Heat Transfer ◽  
Pool Boiling ◽  
Nucleate Pool Boiling ◽  
Pool Boiling Heat Transfer

scholarly journals Performance of Heat Transfer Mechanism in Nucleate Pool Boiling -A Relative Approach of Contribution to Various Heat Transfer Components

2020 ◽  
pp. 100827
Author(s):  
Ashwini Kumar ◽  
Aruna Kumar Behura ◽  
Dipen Kumar Rajak ◽  
Ravinder Kumar ◽  
Mohammad H. Ahmadi ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Pool Boiling ◽  
Transfer Mechanism ◽  
Nucleate Pool Boiling ◽  
Heat Transfer Mechanism ◽  
Performance Of Heat Transfer
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