98··节能减排与综合太阳能驱动的无动力风帽作用下工业厂房通风量研究*孟晓静1,2康思远1曹莹雪1,2(1.西安建筑科技大学资源工程学院,陕西西安710002;2.西部绿色建筑国家重点实验室,陕西西安710055)摘要为解决无动力风帽夏季风量不足的问题,设计了一种太阳能驱动的无动力风帽。通过模型实验测试研究了太阳能驱动的无动力风帽对工业厂房通风量的影响规律。分析了两种开窗模式下太阳辐射强度对风帽通风量的影响,得到了热压和风压共同作用下室内通风量的变化规律。结果表明:太阳能驱动的无动力风帽通风量的变化规律与太阳辐射强度的变化规律基本一致。太阳辐射强度达到120W/m2时,开窗模式1的上侧窗形成了短路气流,应当关闭。开窗模式1中太阳辐射强度小于60W/m2和开窗模式2中太阳辐射强度小于120W/m2时,室内自然通风以热压为主导;而太阳辐射强度大于上述值时,室内自然通风以风帽转动带来的风压为主导。关键词通风量无动力风帽太阳辐射强度工业厂房Researchonthecharacteristicsofventilationrateundertheactionofsolar-poweredunpoweredventilatorsinindustrialplantsMENGXiaojing1,2KANGSiyuan1CAOYingxue1,2(1.SchoolofResourceEngineering,Xi'anUniversityofArchitectureandTechnology,Xi'anShaanxi710002,China)AbstractInordertosolvetheproblemofinsufficientventilationofunpoweredventilatorsinsummer,asolar-drivenunpoweredwindcapisdesignedinthispaper.Theinfluenceofsolar-poweredunpoweredventilatorsontheventilationrateisstudiedbymodelexperiments.Theeffectsofsolarradiationintensityontheventilationrateoftheunpoweredventilatorwithtwowindowopeningmodesareanalyzed.Thevariationoftheindoorventilationrateunderthecom-binedactionofthermalpressureandwindpressureareobtained.Theresultsshowthatthevariationlawsoftheventi-lationrateofthesolar-poweredunpoweredventilatorwereconsistentwiththesolarradiationintensity.Forthewindowopeningmodeone,theshort-circuitairflowformedintheupperwindowswhenthesolarradiationintensityreaches120W/m2,andtheupperwindowsshouldbeclosed.Whenthesolarradiationintensitylowerthan60W/m2forthewin-dowopeningmodeoneor120W/m2forthewindowopeningmodetwo,thenaturalventilationisdominantbythermalpressure.However,thenaturalventilationisdominan...