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1、JamesB.Bradfordetal.“HVACEquipmentandSystems”HandbookofHeating,Ventilation,andAirConditioningEd.JanF.KreiderBocaRaton,CRCPressLLC.2001©2001byCRCPressLLC4HVACEquipmentandSystems4.1HeatingSystemsNaturalGasandFuelOil-FiredEquipment•BoilersJamesB.Bradford•ServiceHotWater•
2、ElectricResistanceHeating•ElectricHeatPumps•LowTemperatureRadiantHeatingSchillerAssociates,Inc.•SolarHeatingJohnA.Bryant4.2AirConditioningSystemsTexasA&MUniversityVaporCompressionCycle•RefrigerantsUseandSelection•ChilledWaterSystems•PackagedEquipmentEllenM.Franconi•Ev
3、aporativeCoolingSchillerAssociates,Inc.4.3VentilationandAirHandlingSystemsMoncefKrartiAnatomyofAirHandlingSystems•Coils•Fans•Ducts•TerminalUnits•Diffusers•AirHandlingSystemUniversityofColoradoControl•SecondaryAirSystemDesign•AirSystemJanF.KreiderCommissioningandOperat
4、ion•DefinitionofTermsKreider&Associates,LLC4.4ElectricalSystemsReviewofBasics•ElectricalMotors•LightingSystemsDennisL.O’Neal•ElectricalDistributionSystems•PowerQualityTexasA&MUniversity•Summary4.1HeatingSystemsJanF.KreiderThischapterdiscussesequipmentusedforproducinghe
5、atfromfossilfuels,electricity,orsolarpower.Theemphasisisondesign-orientedinformation,includingsystemcharacteristics,operatingefficiency,thesignificanceofpartloadcharacteristics,andcriteriaforselectingfromamongthevastarrayofheatproducingequipmentavailable.Theheatingplant
6、sdiscussedinthischapterareoftencalledtheprimarysystems.Systemsintendedtodistributeheatproducedbytheprimarysystemsarecalledsecondarysystemsandincludeductsandpipes,fansandpumps,terminaldevices,andauxiliarycomponents.Suchsecondarysystemsforheatingandcoolingaredescribedin
7、Chapter4.3.ThetermsprimaryandsecondaryareequivalenttothetermsplantandsystemusedbysomebuildinganalystsandHVACsystemmodelers.Thegoalofthischapteristohavethereaderunderstandtheoperationofvariousheatgenerationortransfersystemsandtheirperformance:•Furnaces•Boilers•Heatpump
8、s•Heatexchangers•Partloadperformanceandenergycalculationsforeach©2001byCRCPressLLCTheprimarysourcesofheatforbuildingheatings
