DOE-2 Reference Manual Version 2.1 - DOE2.com

Therefore, if the user is starting from a LOADS input where the fullU-value (UT) of the UNDERGROUND-FLOOR was used, along with a perimeterarea (Ap) then, Ap should be changed to AT, a delayed-type ofconstruction should be assigned, and an effective U-value should beinput, as calculated fromU-EFFECTI VE4. Particular attention should be given to quick INTERIOR-WALLs where aU-value was chosen to be large (U > 0.709 Btu/ft2-hr_OF) to account forheat exchange caused by air movement through openings in the wall. ForCWFs, an additional INTERIOR-WALL should be specified if an actual wall(as opposed to an imaginary partition) separates the zones. Theadditional wall should be of the delayed type of construction and itsarea should be exclusive of openings.The result will be the following. The original wall will affect theair-temperature weighting factor calculation. The added wall will affectthe detailed thermal balance calculation that produces the otherweighting factors (i.e., the solar, lighting, people/equipment, andconduction weighting factors). Both walls will contribute to heatexchange (thermal conduction) in LOADS.5. The WEIGHTING FACTOR SUMMARY REPORT shows the weighting factors for eachspace, whether CWF or Automatic Weighting Factors (AWF). To get thisreport, specify VERIFICATION = (LV-K) in the LOADS-REPORT instruction.2. INPUT (Alternative Forms for LOADS)As discussed in Chap. II, Sec. B, the input data for each of the mainprograms must begin with an INPUT Program-Name instruction. For the LOADSprogram~, this instruction can be modified to create certain libraries inwhich user-specified data or data calculated from user-specified input arestored. If libraries are to be created, the libraries must be created beforethe actual running of the DOE-2 program. Table 111.2 summarizes the optionsavailable to the LOADS user.The simplest method is to use the prespecified, or precalculated,libraries in the DOE-2 program. The DOE-2 Library, BDLLIB, contains the (1)DOE-2-prespecified MATERIALs described in Chap. X and (2) the ASH RAE prespecifiedMATERIALs and LAYERS (response factors). All are accessible to the programby Keyword = Code-word input. Most beginning users will choose thisapproach. In this method, no libraries need be created by the user and hesimply uses an INPUT LOADS instruction to input his data for the DOE-2calculational run. If he wishes to use entries from BDLLIB, he must attach itby job control statements to his run, unless it so defaults on his system.The other option available to the user is to create libraries ofMATERIALs, LAYERS, or weighting factors that are calculated specifically forthe characteristics of his building or a particular space in his building.II 1.145 (Revised 5/81)