DOE-2 Reference Manual Version 2.1 - DOE2.com

described in the Custom Weighting Factor input is anexterior wall; because heat transfer across interiorwalls, floor, and ceiling was considered to be unimportant,these surfaces were not input. The result is aspace with one opaque surface. The remedy is to includeone or all of the originally neglected interior surfacesin the Custom Weighting Factor input. If surfaces mustbe omitted because the details of their geometry andconstruction are poorly known (such as in an energyanalysis of a conceptual design), it is advisable touse precalculated weighting factors.Error Message (2)Meaning:User Action:Error Message (3)SPACE HAS FURNITURE BUT NO VALID FLOOR.WEIGHTING FACTORS WILL NOT BE CALCULATED FOR THISSPACE. IF FLOOR IS EXTERIUR-WALL, UNDERGROUND SURFACE,OR INTERIOR-WALL DEFINED IN THIS SPACE, BE SURE TILT =180. IF FLOOR IS INTERIOR-WALL DEFINED IN AN ADJACENTSPACE, BE SURE TILT = O.Furniture has been specified for a space via theFURN-FRACTION, FURNITURE-TYPE, AND FURN-WEIGHTkeywords. However, none of the surfaces in this spaceis a floor. Unless a floor is present, the CustomWeighting Factor calculation cannot take the effect offurniture into account in calculating the split ofsolar radiation between furniture and the part of thefloor not covered by furniture.Be sure that at least one surface in the space is afloor. This means that(a)(b)(c)(d)for an EXTERIOR-WALL, TILT must be 180';for an INTERIOR-WALL, which is defined in thisspace, TILT must be 180';for an INTERIOR-WALL that is defined in anotherspace, but is NEXT-TO this space, TILT must be 0'(i.e., this wall is a ceiling in the space inwhich it is defined, and therefore, is a floor inthe adjacent space);for an UNDERGROUND-FLOOR or UNDERGROUND-WALL, TILTmust be 180' (the default value is 90').If SHAPE = BOX is used, the surface with LOCATIONBOTTOM will be a floor; the surface with LOCATION = TOPwill be a floor in the NEXT-TO space if this surface isan INTERIOR-WALL.WEIGHTING FACTORS WILL NOT BE CALCULATED FOR SPACE SINCE IT HAS NO DELAYED WALLS, FLOORS, ORCEILINGS. ADD DELAYED SURFACES IN SPACE INPUT OR USEPRE-CALCULATED WEIGHTING FACTORS.IIL164 (Revised 5/81)