ASHRAE.AT-01-1-1-2001 Heating of Church Buildings of Historic Importance

ASHRAE.AT-01-1-1-2001 Heating of Church Buildings of Historic Importance

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時(shí)間：2019-10-17

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1、AT-01-1-1HeatingofChurchBuildingsofHistoricImportancewithDirectGas-FiredHeatingSystemsWeizhongXiangSavvasA.Tassou,Ph.D.,P.E.MariaKolokotroni,Ph.D.MemberASHRAEABSTRACTInrecentyears,aheatingsystemthathasbeengainingincreasedacceptancefortheheatingoflargechurchbuildingsThispaperpresentsresults

2、fromastudyintotheperfor-isthedirectgas-fired(DGF)heatingsystem.Thisismainlymanceofadirectgas-firedheatingsystem(DGF)inaparishduetotherelativelyhighefficiencyandeaseofinstallationofchurchintheU.K.Datafromamonitoringprogramwereusedthissystemcomparedtoalternativeheatingsystems.TheDGFtovalidat

3、eamodelbasedoncomputationalfluiddynamics(CFD).Themodelwassubsequentlyusedtogeneralizethesystemreliesonpressurizationofthesupplyairtoachievethemonitoreddataandinvestigatemethodstoimprovesystemrequiredairandtemperaturedistributioninthechurch.performancewithminimumcostandintervention.DGFheat-

4、However,unlikelargespacessuchasfactoriesandware-ingsystemsintroducewatervaporintotheheatedairfromthehouses,whereDGFsystemshavegainedwideacceptance,thecombustionofnaturalgas,whichwouldincreasetheriskofinternalarchitectureofchurchbuildingsinwhichcolumnsandcondensationoncoldwallsandothersurfa

5、ces.TheresultsofarchesareusedtosubdividetheinternalchurchspaceintosimulationspresentedinthepaperdemonstratethatcarefuldifferentareasmakestheattainmentofuniformairandsizinganddesignofDGFsystems,usingadvancedmodelingtemperaturedistributionmoredifficult.techniquessuchasCFD,canleadtoimprovedth

6、ermalcomfortAnotherproblemwithDGFsystemsistheintroductionofthroughbetterairandwallsurfacetemperatureuniformitylargequantitiesofwatervaporintothechurchfromtheambi-andreducedenergyconsumptionandcondensationrisk.entair,whentheexternalmoisturecontent(humidityratio)isINTRODUCTIONhigherthanthein

7、ternalmoisturecontent,andfromtheburn-ingofnaturalgasdirectlyintothesupplyairstream.This,Unlikemodernbuildingsforwhichheatingsystemdesignaccompaniedbythefactthatchurchbuildingsofhistoricinter-iswellestablishedandthemostimportantconsiderationisestareofmassivecon

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