Search results for "Input data"

showing 3 items of 3 documents

Assessment of methodologies and data used to calculate desalination costs

2017

Abstract In desalination, similarly with other industries, the cost of the final product is one of the most important criteria that define the commercial success of a specific technology. Therefore, when new projects are planned or new technologies are proposed, the analysis of the expected costs attracts a lot of attention and is compared to (perceived) costs of state-of-the-art desalination or costs of alternative fresh water supply options. This comparison only makes sense if the cost assessment methodologies are based on the same principles and use common assumptions. This paper assesses: (i) the methodologies used to calculate the water cost; (ii) the boundary conditions and (iii) the …

EngineeringOperations researchEmerging technologies020209 energyGeneral Chemical Engineeringmedia_common.quotation_subject02 engineering and technologyDesalinationCost assessmentDesalination costs Energy source Methodology Boundary conditions Input data020401 chemical engineering0202 electrical engineering electronic engineering information engineeringGeneral Materials ScienceQuality (business)0204 chemical engineeringSettore ING-IND/16 - Tecnologie E Sistemi Di LavorazioneWater Science and Technologymedia_commonbusiness.industryManagement scienceMechanical EngineeringWater costFinal productGeneral Chemistry6. Clean waterFresh waterbusinessDesalination
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Uncertainty in environmental and hydrological mathematical modelling

2012

The current state of knowledge regarding uncertainties in urban drainage models is poor. This is in part due to the lack of clarity in the way model uncertainty analyses are conducted and how the results are presented and used. There is a need for a common terminology and a conceptual framework for describing and estimating uncertainties in urban drainage models. Practical tools for the assessment of model uncertainties for a range of urban drainage models are also required to be developed. This paper, produced by the International Working Group on Data and Models, which works under the IWA/IAHR Joint Committee on Urban Drainage, is a contribution to the development of a harmonised framewor…

Calibration dataSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleUncertaintieUrban drainage models; Uncertainties; Input data; Calibration data; Sensitivity analysisInput dataSensitivity analysisUrban drainage model
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Characterization of impervious layers using scale models and an inverse method

2009

We describe a novel procedure that uses an inverse method to determine unknown parameters for impervious layers used in multilayer structures. The proposed model of the multilayer structure is limited to an ideal double plate separated by an unbonded, fibrous, sound-absorbing material. Experimental data were obtained by nearfield acoustic holography for the calculation of the transmission loss of various multilayer structures mounted in a window in a wooden box designed specifically for this purpose. We used the Trochidis and Kalaroutis forecast model of acoustic insulation for multilayer structures, which is based on a spatial Fourier transform. The experimental pressure and velocity data …

Inverse methodsEngineeringAcoustics and UltrasonicsAcousticsImpedance couplingHolographyExperimental dataMultilayer structuresAnalysis modelslaw.inventionScale modelssymbols.namesakeOpticsUnknown parameterslawInput dataObservational errorSound absorbing materialsNearfield Acoustic Holographybusiness.industryTransmission lossMechanical EngineeringNumerical analysisSpatial Fourier TransformFORECAST modelAcoustic holographyInverse problemCondensed Matter PhysicsImpervious layersFourier transformMechanics of MaterialsFISICA APLICADAsymbolsbusinessStructural acousticsPosition sensorJournal of Sound and Vibration
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