DOSS - ELEKTRO

Energy Savings for ChillersConstant Speed OperationSequential and will Variable rise. ControlPump Operation1 unit 2 unitsWhen HVACloaddecreases,supply waterpressureEnergy WasteAHU LoadThe chiller and chilled water pump canbeoperated sequentially based on theheat load.In addition, the secondary pump shouldbecontrolled with variable speed to reduceunnecessary electric power waste.Variable Speed OperationR-1R-2PT. Azbil Berca Indonesia.GGCoolingTowerThe VSD ofsecondary waterpumpsshall be controlledto reducea pressure byYamatake controller.CoolingTowerThe energy savingsVSD controlcan be realized bybased on outletwater tempTemp. from chiller Temp.the Sensor water Controller pump Sensoroptimum operation temp.VSDlowestbased on the actualChillerCondensingload.water pumpControllerControl tomake waterThe condensing water pump is usually operatedat constant speed. That speed can be variablebased onthe water temperature which is sensed chillerload.