ASHRAE.HandBook_06-2008 PANEL HEATING AND COOLING

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1、RelatedCommercialResourcesCHAPTER6PANELHEATINGANDCOOLINGPRINCIPLESOFTHERMALRADIATION..............................6.1HydronicPanelSystems...........................................................6.11GeneralEvaluation.................................................................

2、...6.1HydronicMetalCeilingPanels................................................6.13HeatTransferbyPanelSurfaces................................................6.2DistributionandLayout...........................................................6.14GeneralDesignConsiderations.........

3、........................................6.6ElectricallyHeatedPanelSystems...........................................6.16PanelDesign..............................................................................6.8Air-HeatedorAir-CooledPanels..........................................

4、...6.19HEATINGANDCOOLINGPANELControls....................................................................................6.19SYSTEMS................................................................................6.9Hybrid(Load-Sharing)HVACSystems....................................

5、6.20PANELheatingandcoolingsystemsusetemperature-controlledOneexampleofheatingbythermalradiationisthefeelingofindoorsurfacesonthefloor,walls,orceiling;temperatureiswarmthwhenstandinginthesun’sraysonacool,sunnyday.Someofmaintainedbycirculatingwater,air,orelectriccurrentthroughatheray

6、scomedirectlyfromthesunandincludetheentireelectro-circuitembeddedinorattachedtothepanel.Atemperature-magneticspectrum.Otherraysareabsorbedbyorreflectedfromcontrolledsurfaceiscalledaradiantpanelif50%ormoreofthesurroundingobjects.Thisgeneratessecondaryraysthatareacombi-designheattran

7、sferonthetemperature-controlledsurfacetakesnationofthewavelengthproducedbythetemperatureoftheobjectsplacebythermalradiation.Panelsystemsarecharacterizedbycon-andthewavelengthofthereflectedrays.Ifacloudpassesinfrontoftrolledsurfacetemperaturesbelow150°C.Panelsystemsmaybethesun,there

8、isaninstantsensationofcold