ASHRAE.HandBook_17-2007 DATA PROCESSING AND ELECTRONIC OFFICE AREAS

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1、RelatedCommercialResourcesCHAPTER17DATAPROCESSINGANDELECTRONICOFFICEAREASDesignCriteria..............................................................................................................................17.1HVACLoadConsiderations..............

2、............................................................................................17.5HVACSystemsandComponents...................................................................................................17.7AirDistribution...............

3、..............................................................................................................17.9AncillarySpaces..........................................................................................................................17

4、.13OtherSystemsandConsiderations.............................................................................................17.13DATACOM(dataprocessingandtelecommunications)facilitiestheNetworkEquipment—BuildingSystems(NEBS)class,istypi-arepredominantl

5、yoccupiedbycomputers,networkingequip-callyusedintelecommunications.ment,electronicequipment,andperipherals.Themostdefining•Class1:typicallyadatacomfacilitywithtightlycontrolledenvi-HVACcharacteristicofdataandcommunicationsequipmentcen-ronmentalparameter

6、s(dewpoint,temperature,andrelativetersisthepotentialforexceptionallyhighsensibleheatloads(oftenhumidity)andmission-criticaloperations;typesofproductstyp-ordersofmagnitudegreaterthanatypicalofficebuilding).Inaddi-icallydesignedforthisenvironmentareenterp

7、riseserversandtion,theequipmentinstalledinthesefacilitiestypically:storageproducts.•Servesmission-criticalapplications(i.e.,continuousoperation)•Class2:typicallyadatacomspaceorofficeorlabenvironment•Hasspecialenvironmentalrequirements(temperature,humidi

8、ty,withsomecontrolofenvironmentalparameters(dewpoint,tem-andcleanliness)perature,andrelativehumidity);typesofproductstypically•Hasthepotentialfordisruptiveoverheatingandequipmentfailuredesignedforthisenvironmentaresmallservers,st