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DOE-2 Reference Manual Version 2.1 - DOE2.com

DOE-2 Reference Manual Version 2.1 - DOE2.com

DOE-2 Reference Manual Version 2.1 - DOE2.com

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VARIABLE-LISTNumber12345678Variablein FORTRANCodeDescriptionUWWindow U-value (includes inside and outside filmcoefficients) (Btu/hr-ft2_0F)TDIRADIROTDIFADIFOADIRIADIFIFIVARIABLE-TYPEU-name of WINDOWDirect radiation transmission coefficientDirect radiation absorption coefficient (exterior pane)Diffuse radiation transmission coefficientDiffuse radiation absorption coefficient (exterior pane)Direct radiation absorption coefficient [interior pane(s)]Diffuse radiation absorption coefficient [interior pane(s)]Inward flowing fraction of heat from solar radiationabsorbed by inner pane(s)9101112131415161718FOAGOLGEQDIRQDIFQTRANSQABSGSHACOQCONCFMWInward flowing fraction of heat from solar radiationabsorbed by outer paneFraction of window area that is shadedDirect solar radiation incident on unshaded par~ ofwindow, divided by total window area (Btu/hr-ft )Diffuse solar radiation incident on window divided bytotal window area (Btu/hr-ft2)Solar energy transmitted through glass divided by totalwindow area, before multiplication by shadingcoefficient (Btu/hr-ft2)Solar energy absorbed by glass and conducted into thespace divided by window area, before multiplication byshading coefficient (Btu/hr-ft2)Heat gain through window by solar radiation(QTRANS)*(window area)*(shading coefficient) (Btu/hr)Shading coefficientHeat through window by conduction (Btu/hr)QCON = UW * (window area) * (outside DBT - zone temp.)+ QABS * (window area)Crack method infiltration air flow through window(Btu/hr)111.139 (Revised 5/81)

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