Heat and moisture transfer with sorption and condensation

《Heat and moisture transfer with sorption and condensation》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、InternationalJournalofHeatandMassTransfer43(2000)2989±3000www.elsevier.com/locate/ijhmtHeatandmoisturetransferwithsorptionandcondensationinporousclothingassembliesandnumericalsimulationJintuFan*,ZhongxuanLuo,YiLiInstituteofTextilesandClothing,TheHongKongPolytechnicUniversity,HungHom,Ko

2、wloon,HongKongReceived27January1999;receivedinrevisedform12July1999AbstractAdynamicmodelofheatandmoisturetransferwithsorptionandcondensationinporousclothingassembliesispresentedinthispaper.Themodelconsidersforthe®rsttimetheeectofwatercontentintheporous®brousbattingontheeectivethermalco

3、nductivityaswellasradiativeheattransfer,whichisaveryimportantmodeofheattransferwhenthereisagreatdierenceintheboundarytemperatures.Thedistributionsoftemperature,moistureconcentrationandliquidwatercontentintheporousmediafordierentmaterialparametersandboundaryconditionswerenumericallycomp

4、utedandcompared.Thepresentednumericalresultsshowedthatthecondensationzoneexpendstowardsitsboundarieswithtime.72000ElsevierScienceLtd.Allrightsreserved.1.IntroductionkefandEl-Masri[2]andShapiroandMotakef[3]extendedtheanalysistoconsidermobilecondensates.Simultaneousheatandmoisturetransfe

5、rinporousMurata[4]investigatedtheheatandmoisturetransfermediaisofgrowinginterestinawiderangeofscien-withcondensationina®brousinsulationslabfortem-ti®candengineering®eldssuchascivilengineering,peratureupto1008Cboththeoreticallyandexper-safetyanalysisofdam,meteorology,energystorageimenta

6、lly.Murata'smodelconsideredthecondensateandenergyconservation,functionalclothingdesign,fallingundergravityandconvectiveheattransfer.Theetc.predictedheattransfercoecientwasfoundtoagreeHeatandmoisturetransfersinporousmediaarewellwiththeexperimentalone.Morerecently,heatcoupledinrathercomp

7、licatedmechanisms.Althoughandmasstransferinwetporousmediainpresenceofconsiderablepreviousworkhasbeencarriedoutonevaporation±condensationwasrecentlyrevisitedana-thediverseaspectsofsimultaneousheatandmoisturelyticallybyA.Bouddouretal.[5]usingthehomogen-transferintheliteratureboththeore