ASHRAE.HandBook_25-2008 AIR-TO-AIR ENERGY RECOVERY

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1、RelatedCommercialResourcesCHAPTER25AIR-TO-AIRENERGYRECOVERYApplications.............................................................................25.1ThermosiphonHeatExchangers............................................25.14BasicRelations......................................

2、..................................25.2ComparisonofAir-to-AirEnergyRecoverySystems.............25.15AirflowArrangements..............................................................25.4Energyand/orMassRecoveryCalculationProcedure..........25.17AdditionalTechnicalConsiderations...

3、....................................25.6IndirectEvaporativeAirCooling...........................................25.21PerformanceRatings................................................................25.9EconomicConsiderations......................................................

4、25.22DesignConsiderationsofVariousERVSystems......................25.9Symbols..................................................................................25.23AIR-TO-AIRenergyrecoveryistheprocessofrecoveringenergyor(3)comfort-to-comfort.Typicalair-to-airenergyrecoveryappli-

5、or/andmoisturefromanairstreamatahightemperatureorcationsarelistedinTable1.humiditytoanairstreamatalowtemperatureorhumidity.Thispro-Inprocess-to-processapplications,heatiscapturedfromthecessisimportantinmaintainingacceptableindoorairquality(IAQ)processexhauststreamandtransferredt

6、otheprocesssupplyair-whilemaintaininglowenergycostsandreducingoverallenergystream.Equipmentisavailabletohandleprocessexhausttempera-consumption.Thischapterdescribesvarioustechnologiesforair-turesashighas870°C.to-airenergyrecovery.Thermalandeconomicperformance,main-Process-to-pro

7、cessrecoverydevicesgenerallyrecoveronlysen-tenance,andrelatedoperationalissuesarepresented,withemphasissibleheatanddonottransferlatentheat,becausemoisturetransferonenergyrecoveryforventilation.isusuallydetrimentaltotheprocess.Process-to-processapplica-Energycanberecoveredeitheri

8、nitssensible(temperatureonly)ortionsusuallyreco