Search results for "MICI"

showing 10 items of 1671 documents

Suspension phenomena in solid-liquid agitated systems

2011

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti Chimicisolid liquid suspension stirred tanks mixing computational fluid dynamics
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Membrane Distillation for a solar powered desalination pilot unit

2009

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSolar membran distillation desalination
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Flow and mass transfer in spacer-filled channels for reverse electrodialysis: a CFD parametrical study

2016

Abstract In reverse electrodialysis (RED) concentration polarization phenomena and pressure drop affect strongly the power output obtainable; therefore the channel geometry has a crucial impact on the system optimization. Both overlapped and woven spacers are commonly commercialised and adopted for RED experiments; the latter exhibit some potential advantages, such as better mixing and lower shadow effect, but they have been poorly investigated in the literature so far. In this work, computational fluid dynamics was used to predict fluid flow and mass transfer in spacer-filled channels for RED applications. A parametric analysis for different spacer geometries was carried out: woven (w) and…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSpacer-filled channelSettore ING-IND/25 - Impianti ChimiciMixing (process engineering)Filtration and Separation02 engineering and technologyCFD; Concentration polarization; Mass transfer; Reverse electrodialysis (RED); Spacer-filled channel; Physical and Theoretical Chemistry; Materials Science (all); Biochemistry; Filtration and SeparationBiochemistryProtein filamentsymbols.namesake020401 chemical engineeringReversed electrodialysisMass transferFluid dynamicsGeneral Materials ScienceMass transfer0204 chemical engineeringPhysical and Theoretical ChemistryConcentration polarizationSettore ING-IND/19 - Impianti NucleariConcentration polarizationPressure dropSettore ING-IND/24 - Principi Di Ingegneria ChimicaChromatographyChemistryReverse electrodialysis (RED)Reynolds numberMechanics021001 nanoscience & nanotechnologysymbolsMaterials Science (all)0210 nano-technologyCFD
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CFD analysis of the fluid flow behavior in a reverse electrodialysis stack

2012

Salinity Gradient Power by Reverse Electrodialysis (SGP-RE) technology allows the production of electricity from the different chemical potentials of two differently concentrated salty solutions flowing in alternate channels suitably separated by selective ion exchange membranes. In SGP-RE, as well as in conventional ElectroDialysis (ED) technology, the process performance dramatically depends on the stack geometry and the internal fluid dynamics conditions: optimizing the system geometry in order to guarantee lower pressure drops (DP) and uniform flow rates distribution within the channels is a topic of primary importance. Although literature studies on Computational Fluid Dynamics (CFD) a…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSpacer-filled channelSettore ING-IND/25 - Impianti ChimiciOcean Engineering02 engineering and technology010501 environmental sciencesComputational fluid dynamics01 natural sciencesStack (abstract data type)Reversed electrodialysisFluid dynamicsOsmotic powerStack designPressure dropSettore ING-IND/19 - Impianti NucleariSimulation0105 earth and related environmental sciencesWater Science and Technologybusiness.industryChemistryModelingProcess (computing)MechanicsElectrodialysis021001 nanoscience & nanotechnologyPollution6. Clean waterCFD; Modeling; Stack design; Pressure drops; Spacer-filled channelSettore ING-IND/06 - FluidodinamicaPotential flowCFD0210 nano-technologybusinessDesalination and Water Treatment
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CFD MODELLING OF PARTICLE SUSPENSION IN STIRRED TANKS

2011

Mixing of solid particles into liquids in mechanically agitated vessels is a topic of primary importance for several industrial applications. A great deal of research efforts has been devoted so far to the assessment of the minimum impeller speed (Njs) able to guarantee that all particles are suspended. Conversely, only little attention has been paid to the evaluation of the amount of solid particles that are suspended at impeller speeds N lower than Njs, despite the fact that in a number of industrial applications agitation speeds smaller than Njs are actually adopted [1,2]. The present work deals with dense solid-liquid partial suspensions in baffled stirred tanks and particularly focuses…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciStirred tankMulti Fluid ModelSettore ING-IND/25 - Impianti ChimiciMultiphase FlowSolid liquid suspensionComputational Fluid Dynamic
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Reverse electrodialysis with NH4HCO3-water systems for heat-to-power conversion

2017

Abstract A Reverse ElectroDialysis Heat Engine (REDHE) system operating with “thermolytic” ammonium hydrogen-carbonate (NH4HCO3) aqueous solutions as working fluids is studied. The engine is constituted by (i) a RED unit to produce electric power by mixing the solutions at different salinity and (ii) a thermally-driven regeneration unit including a stripping and an absorption column to restore the initial salinity gradient thus closing the cycle. In the present work only the RED unit and the stripping column are taken into account. In particular, a simplified integrated process model for the whole cycle was developed: it consists of (i) a lumped parameter model for the RED unit validated wi…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciStripping (chemistry)Salinity gradient power (SGP)020209 energyAnalytical chemistry02 engineering and technology7. Clean energyThermolytic saltIndustrial and Manufacturing EngineeringWaste heat recovery unitReversed electrodialysisThermal0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringClosed-loop reverse electrodialysiWaste heat recoveryAmmonium hydrogen carbonateCivil and Structural EngineeringPower densityHeat engineWaste managementChemistryMechanical EngineeringAmmonium hydrogen carbonate; Closed-loop reverse electrodialysis; Reverse ElectroDialysis Heat Engine (REDHE); Salinity gradient power (SGP); Thermolytic salts; Waste heat recovery; Civil and Structural Engineering; Building and Construction; Pollution; Energy (all); Mechanical Engineering; Industrial and Manufacturing Engineering; Electrical and Electronic EngineeringBuilding and ConstructionElectrodialysis021001 nanoscience & nanotechnologyPollution6. Clean waterEnergy (all)General EnergyReverse ElectroDialysis Heat Engine (REDHE)Electric power0210 nano-technology
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Experimental investigation and modelling for sulphuric acid recovery by diffusion dialysis

2018

Sulphuric acid is known to be one of the key inorganic acid and has been widely used in chemical reaction and metal industries for surface treatments as in the copper electroplating process. During these processes, large amounts of waste sulphuric acid solution are generally generated, containing high concentrations of metals and acid. The possibility of recover and reuse the sulphuric acid in the process could avoid environmental contamination and reduce costs of the disposal. Among several separation methods, diffusion dialysis (DD) is becoming more and more attractive thanks to the recent important advances in ion exchange membranes (IEMs) field and because of its clean nature and operat…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSulphuric acid recoverycopper electroplating solutions diffusion dialysis
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Suspension phenomena in solidliquid agitated systems

2011

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSuspensionphenomena
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Characterization of membrane-spacer industrial distillers using thermochromic liquid crystals

2011

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciThermochromic Liquid Crystal Membrane-spacer distiller heat transfer thermography
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A design methodology for adaptive type-2 fuzzy controllers

2011

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciType-2 fuzzy controller adapative control
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