DOE-2 Reference Manual Version 2.1 - DOE2.com

Example 2:~ut to do so would preclude the charging of the storage tank atnight, since no cooling equipment is available to charge the tank(i.e., CHILLER is listed after COLD-TANK in the LOAD-ASSIGNI'IENTlisting of PLANT-EQUIPMENT). Therefore, the scheduling of acharging period becomes imperative. (See Rule 7; this situationcould also occur, in this example, if OPERATION-MODE = RUN-ALL.)The user does this by specifying an additional LOAD-ASSIGNMENTinstruction for nighttime charging and schedules the chargingthrough a new LOAD-MANAGEMENT instruction.TANK-CHARGE = LOAD-ASSIGNMENTTYPE = COOL! NGLOAD-RANGE = 7PLANT-EQUIPMENT = CHILLERNUMBER = 1 ..CHILLER-DAS = DAY-ASSIGN-SCH(1,7) (TANK-CHARGE)(8,20)(COOLERS) ~REDEFINED ABOVE~(21,24) (TAfIK-CHARGE) ..CHILLER-wS = WEEK-SCHEDULE (all) CHILLER-DASCHILLER-SCH = SCHEDULE THRU DEC 31 CHILLER-wS ..LOAD-MANAGEMENTPRED-LOAD-RANGE = 999ASSIGN-SCHEDULE = (DEFAULT,CHILLER-SCH,DEFAULT)The use of a hot water storage tank is identical to a cold waterstorage tank except that two additional features are available.The hot water storage tank can be charged with waste heat as wellas boi ler heat, and it can ael iver its stored energy to a number ofdifferent loads. These features are facilitated through theHEAT-RECOVERY instruction. Consider the following:Waste heat from the jacket of a diesel engine is recovered forspace heating or delivered to a hot water storage tank whenever thewaste heat is in excess of the space heating demands. If the wasteheat is insufficient to meet space heating demands, then energystored in the hot tank can be provided at a rate of 4 MBtuh. A7-MBtuh boiler is used as a supplementary heat source if the spaceheating demands are still unmet.$DEFINE HEATING EQUIPMENT~BOIL = PLANT-EQUIPMENTTYPE = SO I LERSIZE = 7INSTALLED-NUMBER = 1MAX-NUMBER-AVAIL 1V.79 (Revised 5/81)