Search results for "Performance model"

showing 3 items of 3 documents

Relative efficiency revealed: Equations for k<inf>1</inf>–k<inf>6</inf> of the PVGIS model

2014

The European PV Geographical Information System (PVGIS) describes module performance in terms of the relative efficiency with respect to Standard Testing Conditions (STC). The efficiency's dependence on irradiance and operating temperature is modeled with a bi-quadratic polynomial with respect to the relative temperature and the logarithm of relative irradiance. In earlier works, the present author derived relations between two model coefficients describing the irradiance dependence at 25°C, k 1 and k 2 , and I–V curve model parameters such as the series resistance RS and the ideality factor n. There was good agreement between the theoretical and fitted values of k 1 , but the fitted values…

PolynomialEfficiencyLogarithmOperating temperatureEquivalent series resistancebusiness.industryMathematical analysisElectrical engineeringIrradianceModel parametersbusinessPerformance modelMathematics2014 IEEE 40th Photovoltaic Specialist Conference (PVSC)
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Test of the European Joint Research Centre performance model for c-Si PV modules

2012

The performance of ten c-Si PV modules is studied at different levels of illumination and module temperatures and is modeled in terms of relative efficiency with respect to Standard Testing Conditions (STC). A recently proposed model is tested in Nordic conditions for generic mono- and mc-Si devices with screen-printed cells as well as for some high-efficiency cell designs. Two of the modules are field aged. Averaged model coefficients are derived and compared to values found in the literature. Irradiance and module temperatures measured in 2011 are then used to estimate the expected annual energy yields. The measured yields equal the predicted ones within 1.6% (mean bias error −1.0%) which…

Joint researchEfficiencyTest sitebusiness.industryStatisticsIrradianceElectrical engineeringbusinessPerformance modelEnergy (signal processing)Efficient energy useMathematicsAmbient air2012 38th IEEE Photovoltaic Specialists Conference
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Economic and environmental sustainability of submerged anaerobic MBR-based (AnMBR-based) technology as compared to aerobic-based technologies for mod…

2015

[EN] The objective of this study was to assess the economic and environmental sustainability of submerged anaerobic membrane bioreactors (AnMBRs) in comparison with aerobic-based technologies for moderate-/high-loaded urban wastewater (UWW) treatment. To this aim, a combined approach of steady-state performance modelling, life cycle analysis (LCA) and life cycle costing (LCC) was used, in which AnMBR (coupled with an aerobic-based post-treatment) was compared to aerobic membrane bioreactor (AeMBR) and conventional activated sludge (CAS). AnMBR with CAS-based post-treatment for nutrient removal was identified as a sustainable option for moderate-/high-loaded UWW treatment: low energy consump…

INGENIERIA HIDRAULICAEngineeringEnvironmental EngineeringCost-Benefit Analysis0208 environmental biotechnologySewageEnvironmental pollution02 engineering and technologyWastewater010501 environmental sciencesManagement Monitoring Policy and LawMembrane bioreactorGlobal Warming01 natural sciencesWater PurificationBioreactorsBioreactorAnaerobiosisWaste Management and DisposalTECNOLOGIA DEL MEDIO AMBIENTE0105 earth and related environmental sciencesLife cycle costing (LCC)SewageLife cycle analysis (LCA)Steadystate performance modellingbusiness.industryUrbanizationSubmerged anaerobic MBR (AnMBR)Environmental engineeringMembranes ArtificialGeneral MedicineModels TheoreticalGlobal warming potential (GWP)Aerobiosis020801 environmental engineeringActivated sludgeWastewaterSewage treatmentEnvironmental PollutionbusinessAnaerobic exerciseJournal of Environmental Management
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