DOE-2 Reference Manual Version 2.1 - DOE2.com

3. The investment statistics that determine whether the modificationis cost-beneficial are given in ECONOMICS Report ES-C.B. Examples.Note: The ECONOMICS program need not be run for the baseline ifthe user does not wish to specify nonplant costs. In thiscase, the BASELINE input for subsequent runs can beobtained from PLANT Report PS-J of the baseline run.Examples of Method II are given in the Users Guide, Section 8.B.2,and in the Sample Run Book, Simple Structure Run 3 (baseline) andSimple Structure Run 3A (modification).C. Special Case.If the modification involves adding or replaCing central plantequipment, that equipment must be entered under COMPONENT-COST in theECONOMICS input of the modified building run. It is important thatthe cost of the alternative plant equipment not also be entered inthe PLANT input. To avoid double counting, it is therefore necessaryto set these costs to zero in the PLANT input, as shown in thefollowing example.Ex amp le:Building modification consists of installing an additional boiler of160,000 Btu/hr capacity to a plant with an existing boiler of 450,000Btu/hr capacity.In PLANT SimulatorINPUT PLANT ..EXISTI NG-BOILERADD-BOILEREND ..COMPUTE PLANT ..= PLANT-EQUIPMENTPLANT-EQUIPMENTTYPE = STM-BOILERSIZE = 0.45FIRST-COST = 5000INSTALLATION = 1.2EQUIPMENT-LIFE = 200000HOURS-USED = 50000TYPE = STM-BOILERSIZE = 0.16FIRST-COST = 0CONSUMABLES = 0MAl NTENANCE = 0MINOR-OVHL-COST = 0MAJOR-OVHL-COST = 0VL15(Revised 5/81)