GEA Ultra-Denco ® - Deltagci.com

Greater operating cost savings using integrated free coolingOver 30 % reduction in power consumptionComparison of power consumption betweenan air-cooled chiller and a unit with a free-cooling functionPower consumption(kWh/a)Outdoor-temperature plot throughout the year(h/°C)50.00040.00030.00020.00010.0000-11 -9 – -7 -5 – -3 -1 – 1 3 – 5 7 – 9 11 – 13 15 – 17 19 – 21 23 – 25 27 – 29 31■ GLAC 1204 BD2■ GLFC 1204 BD2These data are based on the following conditions:Cooling duty: 350 kW; water temperature: inlet = 15 °C / outlet = 10 °C; operation throughout the entire year; location: Munich, GermanyWhy choose a GEA Chiller with free cooling?Whenever cooling is required year round chillers with a free coolingcapability are the ideal solution. With the ever increasing load demands inbuildings, even in comfort applications, a free cooling chiller can be a mosteffective choice. Depending on the local climate conditions, the use of a freecooling, as opposed to a standard chiller can lead to very short paybacktimes.Chillers with free-cooling functionCooling duty from 30 to 380 kW for systemswith up to 4 scroll compressors, and from 300to 1,250 kW for machines with screw compressors.A master/slave control system from GEA enablescommunications among up to 5 units, whichallows retrofitting to achieve greater requiredcooling duties.The higher the water temperatures the more energy efficient the operationof the chiller. Using higher water temperatures also allows the changeoverto free cooling to be made earlier and remove the need for compressoroperation. Common flow and return water temperatures for chillers are6 °C and 12 °C. But if these temperatures are increased to 10 °C and 15 °Cthen the chiller will operate much more efficiently than at the lowertemperatures. In addition when using higher water temperatures, becausefree cooling will already have started at an outdoor temperature of 14 °Cand not at 11 °C as is the case with standard chiller operation, additionalenergy saving benefits can be enjoyed.09/2010 – PR-2010-0041-GB · Subject to modification