Search results for "Film temperature"

showing 3 items of 3 documents

A method for the calculation of the heat transfer coefficient in potato drying

1993

A method for the determination of the heat transfer coefficient was proposed for the first falling drying period of potato cubes. During this period, heat and mass transfer were considered as coupled phenomena. Temperature calculation inside the sample was performed using the macroscopic heat transfer balance. The heat transfer coefficient was computed by means of parametric identification, using the Gauss–Newton method. The figure obtained for the heat transfer coefficient shows good agreement with other sources.

Nutrition and DieteticsNTU methodChemistryMass transferHeat transferFilm temperatureHeat transfer coefficientMechanicsParametric identificationAgronomy and Crop ScienceChurchill–Bernstein equationFood ScienceBiotechnologyJournal of the Science of Food and Agriculture
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In-situ annealing characterization of atomic-layer-deposited Al2O3 in N2, H2 and vacuum atmospheres

2019

Tarkista embargo, kun artikkeli julkaistu. Atomic-layer-deposited Al 2 O 3 films can be used for passivation, protective, and functional purposes in electronic devices. However, as-deposited, amorphous alumina is susceptible to chemical attack and corrosion during manufacturing and field-use. On the contrary, crystalline Al 2 O 3 is resistant against aggressive chemical treatments and corrosion. Here, high-temperature treatments in N 2 , H 2 , and vacuum were used to crystallize alumina which exhibited different crystalline phases. The annealing process was monitored continuously in situ by measuring the film temperature and surface reflectance to understand the crystallization kinetics. Ex…

High-temperature annealingMaterials sciencePassivationbarrier filmcrystallizationAnnealing (metallurgy)alumiinioksidi02 engineering and technologyAluminum oxidehigh-temperature annealing01 natural sciencesCorrosionlaw.inventionAtomic layer depositionlawBarrier film0103 physical sciencesMaterials ChemistryCrystallizationta216010302 applied physicsta213ta114Atomic layer depositionMetals and AlloysFilm temperatureSurfaces and Interfacesatomikerroskasvatus021001 nanoscience & nanotechnologySurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsAmorphous solidChemical engineeringNanometreohutkalvotCrystallization0210 nano-technology
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Influence of the boundary conditions on heat and mass transfer in spacer-filled channels

2017

The purpose of this study is to discuss some problems which arise in heat or mass transfer in complex channels, with special reference to the spacer-filled channels adopted in membrane processes. Among the issues addressed are the consistent definition of local and mean heat or mass transfer coefficients; the influence of the wall boundary conditions; the influence of one-side versus two-side heat/mass transfer. Most of the results discussed were obtained by finite volume CFD simulations concerning heat transfer in Membrane Distillation or mass transfer in Electrodialysis and Reverse Electrodialysis, but many of the conclusions apply also to different processes involving geometrically compl…

HistoryMaterials scienceConvective heat transferFilm temperature02 engineering and technologyMechanicsHeat transfer coefficientElectrodialysis021001 nanoscience & nanotechnologyChurchill–Bernstein equationComputer Science ApplicationsEducationPhysics and Astronomy (all)020401 chemical engineeringMass transferReversed electrodialysisHeat transfer0204 chemical engineering0210 nano-technology
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