다채널 태양열 흡수기의 열전달 해석을 위한 집광 열유속 모델링
Concentrated Solar Flux Modeling for the Heat Transfer Analysis of Multi-Channeled Solar Receivers
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Thevolumetricsolarreceiverisakeyelementofsolarpowerplantsusingair.Thesolarfluxdistribution insidethereceivershouldbeaprioriknownforitsheattransferanalysis.Previousworkshavenotconsidered characteristics ofthe solarflux although they change with radiative properties ofreceivermaterials and receivergeometries.A numericalmethod,which is based on the Monte Carlo ray-tracing method,was developedinthecurrentwork.Thesolarfluxdistributionsinsidemulti-channeledvolumetricsolarreceivers werecalculatedwhenlightisconcentratedattheKIER solarfurnace.Itturnedoutthat99percentageofthe concentratedsolarenergyisabsorbedwithin15mm channellengthforthechannelradiussmallerthan1.5mm. Iftheconcentratedlightisassumedtobediffuse,theabsorbedsolarenergyatthechannelentranceregionis overpredictedwhilethelightpenetratesmoredeeplyintothechannel.Oncethepresentedresultsareimported intotheheattransferanalysis,onecouldexamineeffectsofmaterialpropertyandgeometryofthereceiveron airtemperatureprofiles
Abstract
Thevolumetricsolarreceiverisakeyelementofsolarpowerplantsusingair.Thesolarfluxdistribution insidethereceivershouldbeaprioriknownforitsheattransferanalysis.Previousworkshavenotconsidered characteristics ofthe solarflux although they change with radiative properties ofreceivermaterials and receivergeometries.A numericalmethod,which is based on the Monte Carlo ray-tracing method,was developedinthecurrentwork.Thesolarfluxdistributionsinsidemulti-channeledvolumetricsolarreceivers werecalculatedwhenlightisconcentratedattheKIER solarfurnace.Itturnedoutthat99percentageofthe concentratedsolarenergyisabsorbedwithin15mm channellengthforthechannelradiussmallerthan1.5mm. Iftheconcentratedlightisassumedtobediffuse,theabsorbedsolarenergyatthechannelentranceregionis overpredictedwhilethelightpenetratesmoredeeplyintothechannel.Oncethepresentedresultsareimported intotheheattransferanalysis,onecouldexamineeffectsofmaterialpropertyandgeometryofthereceiveron airtemperatureprofiles
참고문헌 (10)
- Carotenuto,A, , SolarEnergy, 46, pp.241~248 (1991)
- Carcia-Casals,X, , Solar Energy, 67, pp.265~286 (1999)
- Pitz-Paal,R, , SolarEnergy, 60, pp.135~150 (1997)
- Fend,T, , SolarEnergyMaterials& SolarCells, 84, pp.291~304 (2004)
- Fend,T, , Energy, 29, pp.823~833 (2004)
- Agrafiotis,C.C, , SolarEnergy Materials& SolarCells, 91, pp.474~488 (2007)
- Albanakis,C, , ExperimentalThermal andFluidScience, 33, pp.246~252 (2009)
- Siegel,R, "Thermal RadiationHeatTransfer,4thed" (2002), Taylor & Francis
- 이현진, , 태양에너지학회 추계학술발표대회 논문집, 30, pp.153~158 (2010)
- Press,W.H, "NumericalRecipesin C,2nded" (1992), Cambridge,UK