Optimized aeration by carbon dioxide gas for microalgal production and mass transfer characterization in a vertical flat-plate photobioreactor

2002 ◽  
Vol 25 (2) ◽  
pp. 97-101 ◽  
Author(s):  
Kai Zhang ◽  
Norihide Kurano ◽  
Shigetoh Miyachi
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Flat Plate ◽  
Carbon Dioxide Gas ◽  
Flat Plate Photobioreactor ◽  
Vertical Flat Plate

Theoretical Considerations of Combined Thermal and Mass Transfer From a Vertical Flat Plate

1956 ◽  
Vol 23 (2) ◽  
pp. 295-301
Author(s):  
E. V. Somers
Keyword(s):  
Mass Transfer ◽  
Flat Plate ◽  
Fluid Motion ◽  
Practical Case ◽  
Forced Circulation ◽  
Evaporation And Condensation ◽  
Mass Transfer Processes ◽  
Convective Thermal ◽  
Theoretical Considerations ◽  
Vertical Flat Plate

Abstract In free-convective processes involving both thermal and mass transfer, since the driving force for the fluid motion has its source solely in the density difference from ambient, it is necessary to consider the thermal and mass-transfer processes simultaneously in solving any given problem. The present problem involves evaporation and condensation phenomena associated with free-convective thermal and mass transfer from a wetted isothermal vertical flat plate to a gas at an ambient temperature and mass concentration different from that on the plate. This problem presents itself in the practical case of vaporization cooling of equipment without forced circulation of the ambient gas.

Impairment of Local Heat Transfer of the Turbulent Mixed Convection in a Vertical Flat Plate

2018 ◽  
Author(s):  
Myeong-Seon Chae ◽  
Bum-Jin Chung
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Mixed Convection ◽  
Flat Plate ◽  
Forced Convection ◽  
Convection Heat Transfer ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Convection Heat ◽  
Vertical Flat Plate

The heat transfer of the buoyancy-aided turbulent mixed convective flow in a vertical flat plate was investigated experimentally. Mass transfer experiments were carried out based on the heat and mass transfer analogy. The Rayleigh numbers ranged from 1.69 × 108 to 2.11 × 1013, depending on the height of the vertical flat plate. The Reynolds numbers varied from 4,585 to 17,320 for turbulent regimes. The test results for turbulent forced convections agreed well with the forced convection correlations established by Petukhov et al. The local heat transfer rates of the turbulent mixed flow exhibited the impairment of heat transfer compared to the forced convection and non-monotonous behavior along the axial position due to buoyancy effect. The local minimum heat transfer was 38.6% lower than the forced convection heat transfer. The turbulent mixed convection heat transfer is affected by the height of vertical plate.

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