Search results for "spacer filled channel"

showing 5 items of 5 documents

Temperature distribution analysis in spacer filled channels for membrane distillation

2012

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciChromatographyMaterials scienceDistribution (number theory)Membrane Distillation TLC Temperature distribution Spacer filled channel Heat transferSettore ING-IND/25 - Impianti ChimiciAnalytical chemistryMembrane distillation
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A Thermochromic Liquid Crystals Image Analysis technique to investigate temperature polarization in spacer-filled channels for Membrane Distillation

2013

The analysis of flow fields and temperature distributions is of paramount importance in the development and optimization of new spacer-filled channel geometries for Membrane Distillation modules. The literature reports only few studies on the experimental characterization of such channels and, to the authors’ knowledge, none of them presents local information concerning the temperature distribution on the membrane surface. In the present work, a non-intrusive experimental technique named TLC-IA-TP is presented: it is based on the use of Thermochromic Liquid Crystals (TLCs) and digital Image Analysis (IA) and it is applied here for the first time to the analysis of Temperature Polarization (…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciConvective heat transferbusiness.industryChemistrySettore ING-IND/25 - Impianti ChimiciMechanical engineeringFiltration and Separation02 engineering and technologyMechanicsComputational fluid dynamics021001 nanoscience & nanotechnologyMembrane distillationPolarization (waves)BiochemistryMembrane technologyMembrane020401 chemical engineeringLiquid crystalMembrane distillation Temperature polarization Thermochromic Liquid Crystals Digital Image Analysis Spacer filled channelGeneral Materials Science0204 chemical engineeringPhysical and Theoretical Chemistry0210 nano-technologybusinessCommunication channel
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CFD analysis of concentration polarization phenomena in spacer-filled channels for Reverse Electro-Dialysis

2012

In this work, carried out within the EU-FP7 funded REAPower project, CFD simulations were carried out in order to study the fluid flow behaviour and mass transport phenomena within spacer-filled channels.

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciFluid DynamicSalinity gradient powerconcentration polarizationmodelingspacer filled channelReapower ProjectCFDSettore ING-IND/19 - Impianti Nucleari
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On some issues in the computational modelling of spacer-filled channels for membrane distillation

2017

Abstract This study addresses issues which arise in the computational and experimental modelling of flow and heat/mass transfer in membrane distillation and other processes adopting spacer-filled channels (either planar or spiral wound), but have not been sufficiently clarified in the literature so far. Most of the argumentations presented are based on original computational results obtained by the authors by finite volume simulations; some literature results are also considered. The questions addressed regard the choice of scales for the reduction of data and the definition of dimensionless numbers ( Re , f , Nu , Sh ); the definition of average heat or mass transfer coefficients; the comb…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciGeneral Chemical EngineeringSettore ING-IND/25 - Impianti ChimiciThermodynamicsMembrane distillation02 engineering and technologyMembrane distillationComputational fluid dynamics; Heat transfer; Mass transfer; Membrane distillation; Spacer filled channel; Chemistry (all); Chemical Engineering (all); Materials Science (all); Water Science and Technology; Mechanical Engineeringsymbols.namesakeThermal conductivity020401 chemical engineeringComputational fluid dynamicMass transferHeat transferGeneral Materials ScienceMass transferChemical Engineering (all)0204 chemical engineeringSettore ING-IND/19 - Impianti NucleariWater Science and TechnologyFinite volume methodChemistryMechanical EngineeringChemistry (all)Reynolds numberGeneral ChemistrySpacer filled channel021001 nanoscience & nanotechnologyThermal conductionHeat transfersymbolsMaterials Science (all)0210 nano-technologyDimensionless quantityDesalination
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Investigation of heat transfer in spacer-filled channels by experiments and direct numerical simulations

2016

Abstract The analysis of flow fields and heat or mass transfer phenomena is of great importance in the optimum design of spacer-filled channel geometries for a variety of membrane-based processes. In the present work, models of spacer-filled channels often adopted in Membrane Distillation are simultaneously investigated by experiments and Computational Fluid Dynamics (CFD). Experiments rely on a non-intrusive technique, based on the use of Thermochromic Liquid Crystals (TLC) and digital image processing, and provide the local distribution of the convective heat transfer coefficient on a thermally active wall. CFD relies on steady-state (laminar flow) simulations in the lower end of the Reyn…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciMaterials scienceSettore ING-IND/25 - Impianti ChimiciFlow (psychology)Thermodynamics02 engineering and technologyHeat transfer coefficientComputational fluid dynamicsPhysics::Fluid Dynamicssymbols.namesake020401 chemical engineeringMass transferHeat transfer0204 chemical engineeringMembrane DistillationFluid Flow and Transfer ProcessesThermochromic Liquid CrystalTurbulencebusiness.industryMechanical EngineeringReynolds numberLaminar flowSpacer filled channelMechanics021001 nanoscience & nanotechnologyCondensed Matter PhysicsHeat transfersymbolsSettore ING-IND/06 - FluidodinamicaDirect numerical simulation; Heat transfer; Membrane Distillation; Spacer filled channel; Thermochromic Liquid Crystals; Fluid Flow and Transfer Processes0210 nano-technologybusinessDirect numerical simulation
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