DOE-2 Reference Manual Version 2.1 - DOE2.com

MAJ-OVHL-INT-REF specifies a new reference default value (CPref) for thecost parameter MAJOR-OVHL-INTV of Table V.l.MAJ-OVHL-CST-REF specifies a new reference default value (CPref) for thecost parameter MAJOR-OVHL-COST of Table V.l.If c1, c2, .•. ,c n are the "look-up" costs for sizessnsl' s2' ... , sn take SIZE-REF = 2 andP (c1 c2then X-REF = SIZE-REF x -P x -P xsl s2c n) l/n••• x -P ,snwhere X-REF = FIRST-COST, INSTALLATION, etc., c1, c2,.··' cnare in dollars, and sl' s2' ... ' sn are in Btu/hr.and P is defined in PLANT-EQUIPMENT and Table V.I.Example:An absorption chiller is to be sized by the program to meet thespace cooling loads of a building. In order to reduce the coolingloads, a number of parametric studies are undertaken. If thecost of single-stage absorption chillers rated at 300,000, 600,000,1,200,000, and 1,800,000 Btu/hr is determined to be $15,000,$25,000, $40,000, and $50,000, respectively, the user inputsABS1 = PLANT-EQUIPMENTTYPE = ABSOR1-CHLRSIZE = -999INSTALLED-NUMBER = 1MAX-NUMBER-AVAIL = 1REFERENCE-COSTSTYPE = ABSOR1-CHLRSIZE-REF = 750000FIRST-COST-REF = 32050.0The program calculates the FIRST-COST of the 300,000, 600,000,1,200,000, and 1,800,000 Btu/hr chillers to be $15,383, $24,475,$38,942, and $51,098, respectively, as opposed to $9,290, $14,781,$23,518, and $30,858, whiCh would result by accepting the standarddefault for the PLANT-EQUIPMENT instruction.V.95 (Revised 5/81)