Chiller/Evaporator/Condenser/Cooling Water Distribution
In chiller units, setting to constant temperature (with E-motor) instead of constant pressure (with regulating valve) saves energy and smaller pumps can be used (running faster). The viscosity of glycol and brines changes with the liquid temperature. Grundfos pumps can be supplied with oversized motors that efficiently cope with higher load. Critical cooling processes require that the temperature does not deviate. Grundfos speed-controlled pumps make sure that the temperature is held constant.
Low temperatures in installations can cause water condensation in the motor at standstill. With Grundfos integrated motor heaters condensation is completely avoided. To prevent deformation because of thermal expansion CRN versions are recommended for low-temperature applications. On the secondary side usually ice water, glycol, brine or alcohol-water are used as cooling liquid. This can be best handled with stainless steel pumps.
