通风空调设备用蒸发冷却节能技术的研究

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1、东华大学博士学位论文通风空调设备用蒸发冷却节能技术的研究姓名：强天伟申请学位级别：博士专业：环境工程指导教师：沈恒根20060716StudyonEvaporativeCoolingEnergySavingTechnologyUsedinVentilatingandAirConditioningEquipmentAbstractEvaporativecoolingsystemsarefindingincreasingapplicationinnorthwestareaofChinasincethe1990s．whichareapplied

2、toreplacewithtraditionalmechanicalrefrigerator．Since2002，cell．unitdirectevaporativecoolingairconditionersarewidelyusedinGuangdongprovince，whichservedasventilatingandcoolingdownequipmentinbigindustrybuilding．Today,energycrisisisapproachingandthreateningmankind’Ssurvival．Th

3、erealealargenumbersofbigindustrybuildingsinourcountry．Thetemperatureinindustrybuildingisusuallyratherhi【glland．someproductionprocessbringspoisonousandnoxiousmatter．WiththeestablishmentofsomestandardssuchasGBZl—2002．themethodofnatureventilatingandcoolingdowninindustrybuild

4、ingscannotmeetthedemand，moreover’traditionalmechanicalrefrigerationwillbringhigherinvestment，operationexpenseandpoorairquality．However,evaporativecoolingequipment(airconditioner)hasit’Ssuperiority,itcanbringbettereffectthanthatofnatureventilatingequipmentandtraditionalmec

5、hanicalrefrigerator．Ontheotherhand，withfasteconomicgrowth，manyskyscrapershaveappealedinbigcitiesofChina．Lighting，heating，andairconditioningstrainenergysupplies，totheextentthatskyscrapersbecomelavishconsumers，andwasters，ofelectricpower．Wrorseofa11．thosereflectiveglasscoate

6、dwithsilverorgoldmirrorfilmsraisethetemperatureofthesurroundingair．Inthiscondition，thesuperiorityofevaporativecoolingequipmentcombiningwithtraditionalmechanicalrefrigeratorisbecomingimportant．Forabovereasons，alotoftheoreticalandexperimentalresearchonheatandmasstransferphe

7、nomenonofevaporativecoolingprocessinpadsiscarriedouthere．Themainworkisasfollows：1．Onthebasisofanalyzingpreviousmodels，thispaperpresentsatwo-dimensionnondimensionalmathematicalmodel，whichcandescribealltypesofevaporativecoolingpads．Themathematicalmodelisdescribedwiththreepa

8、rtialdifferentialequations．Assoonastheproductof(Ct斛iSobtained，themathematicalmodelcanbecalculate