Mass transfer in the membrane
Mass transfer in titania photocatalytic membrane reactors
... larger mass transfer ...[16] Membrane filtration can be executed in either a dead-end mode or cross-flow ...the membrane to become a ...the membrane surface, pressure increases will no ...
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Heat and mass transfer resistance analysis of membrane distillation
... contact membrane distillation processes, and of its dom- inant variables, are analyzed by constructing expressions of the domain mass transfer resistances and their ...
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CFD Simulation of Mass Transfer in Membrane Evaporators for Concentration of Aqueous Solutions
... two-dimensional mass transfer model was developed to predict the flux of water evaporation in the membrane ...the mass transfer ...of membrane evaporator ...
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Effectiveness mass transfer units (# MTU) model of an ideal pressure retarded osmosis membrane mass exchanger
... osmosis mass exchanger using an ideal membrane were ...the membrane as a function of the configuration of the membrane and four dimensionless groups: two osmotic pressure ratios, a mass ...
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Mass Transfer Coefficient in Multi-Stage Reformer/Membrane Modules for Hydrogen Production
... • RMM simplifies maintenance of the Pd/Ag membrane modules and catalyst replacement. With these premises, we analyzed multiple data related to the pilot plant experiments and, through the mathematical modeling ...
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Analysis of heat and mass transfer by CFD for performance enhancement in direct contact membrane distillation
... intrinsic mass-transfer coefficient of the membrane (C) on the performance enhancement for both non-baffled and baffled ...the mass flux showed an increasing trend. A membrane with a ...
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Tube-side mass transfer for hollow fibre membrane contactors operated in the low Graetz range
... overall mass transfer coe ffi cient, and was markedly below that estimated through extrapolation of the Lévêque ...solution. Membrane resistance was determined for each fibre through Wilson plot ...
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Convective mass transfer between a hydrodynamically developed airflow and liquid water with and without a vapor permeable membrane
... and mass transfer during simultaneous heat and mass ...and mass transfer for a vapor permeable Tyvek® membrane placed between an airflow and liquid ...the membrane within ...
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Numerical simulation of heat and mass transfer in direct membrane distillation in a hollow fiber module with laminar flow
... Basically, the empirical correlations and conservation equations used in earlier studies provided simplified one dimensional solutions. To further improve model applicability and accuracy, computational fluid dynamics ...
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Amine Based CO2 Absorption in Membrane Contactor Using Polyvinyl Pyrrolidone-modified Polysulfone Flat Sheet Membrane: Experimental Study and Mass Transfer Resistance Analysis
... of mass transfer flux plotted in Figure 6, the capability of PSF and PVP-modified PSF membranes for CO 2 absorption can be ...PSF membrane was remarkably enhanced by addition of PVP as an ...PSF ...
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Numerical Optimization of Flow Field Pattern by Mass Transfer and Electrochemical Reaction Characteristics in Proton Exchange Membrane Fuel Cells
... the mass transfer and electrochemical reaction characteristics which influence the distribution of reacting gases as well as the performance of proton exchange membrane fuel ...The mass ...
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Modelling and optimisation of gas-liquid mass transfer in a microporous hollow fiber membrane aerated bioreactor used to produce surfactin
... demonstrated. Membrane aerated bioreactors have been developed to run aerobic cultures in some specific processes in which air bubble sparging is in ...good mass transfer capacities, due to a great ...
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Modeling Mass Transfer and Assessing Cost and Performance of a Hollow Fiber Nanofiltration Membrane Process
... Bucket tests were required for the initial startup, until the flow meters were installed on the pilot unit. Pressures were recorded directly from the pressure gauges on the pilot unit. Table 4-4 lists the location and ...
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Supplementary Materials: Mass transfer analysis of air-cooled membrane distillation configuration for desalination
... S5, heat transfer in the MD process can be divided into the fol- lowing sections: (1) heat transfer through the hydrophobic membrane ( Q m ), including the conduct[r] ...
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Numerical Simulation of Heat/Mass Transfer in a Single Proton Exchange Membrane Fuel Cell with Serpentine Fluid Channels
... exchange membrane fuel cell (PEMFC) has become the promising candidate for power source of electrical vehicle for its advantage characteristics as no pollution, low noise and especially fast startup under common ...
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Mass Transfer Part (2)
... The nature of solids and its interaction with the diffusing substance influence the rate of mass transfer. They are : 2.5.1.1 Diffusion through Polymers Diffusion through polymeric membranes for e.g. ...
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Low-temperature heat utilization with vapor pressure-driven osmosis: Impact of membrane properties on mass and heat transfer
... (VPDO) membrane technology enables direct conversion of abundant low-temperature (< 100 °C) heat resources to useful ...understand mass and heat transfer of VPDO, and two hydrophobic nanoporous ...
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Mass Transfer Solutions
... 2.23 b . Mass transfer in fluidi ed beds. Cavatorta, et al. (AIC E J., 45, 938, 1999) studied the electrochemical reduction of ferrycianide ions, {Fe(CN) 6 } 3 , to ferrocyanide, {Fe(CN) 6 } 4 , in aqueous ...
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Heat and Mass Transfer
... Calculate the diameter and length of a an adiabatic rotary dryer to dry 2800 lb/h of a heat sensitive solid from an initial moisture content of 15 percent to a final moisture content of 0.5 percent , both dry basis. The ...
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Heat and Mass Transfer
... transfer. In this example, if a liquid is used the allowable power of the chip is increased significantly. However practically it is difficult to do so and it is easier to increase the heat transfer area, ...
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