DOE-2 Reference Manual Version 2.1 - DOE2.com

REPORT PS-D --PLANT LOADS SATISFIEDThe intent of this report is to flag those situations where the plant isnot able to meet the loads imposed by both systems and other plantequipment. This is of special importance in those cases where equipment isintentionally undersized in order to improve part load performance or toreduce costs.When a hot or cold storage tank is included, additional entries aregiven at the bottom of the first page which describe the contribution to theheating and cooling demands made by the storage tank(s).The TOTAL DEMAND ON PLANT for heating (cooling) is the sum of the demandfrom SYSTEMS, the consumption by PLANT, the loss from the storage tank andthe heat remaining in the storage tank at the end of the run. The last, ofcourse, is still recoverable and is reported as RESIDUAL.The user should be aware that, when PLANT begins its simulation, itassumes that there is no usable energy in the storage tanks. Furthermore,at the end of the simulation there may be significant amounts of RESIDUALenergy remaining. No account of this residual energy is made in other PLANTreports, with the consequence that the total fuel use reported overestimatesthe heating load met for the run period. The residual energy in the tank isavailable for the next period of time (beyond the run period) and shouldproperly be subtracted from the reports on site energy used.Note: A cooling tower can always reject any heat load given to it. Ifthe tower is undersized, the leaving tower water temperature will be hotter,which wi 11 degrade chi ller performance.VII .104