Air cooled screw chiller for alcohol liquefaction at 0°C
A producer of sparkling wine required a vacuum dealcoholization system. As production is located in the tourist area of town, there were stringent requirements regarding sound levels. Because the CyberCool 2 is designed for partial load operation, STULZ was able to satisfy these requirements by reducing the fan speed. Due to its large heat exchanger surface areas, the chilling system achieves optimum evaporating and condensing temperatures, and therefore a high Energy Efficiency Ratio (EER) value.
Explanation: Q0= Cooling capacity; P el= Electrical power consumption
The required availability was fulfilled by using two refrigerant circuits each with a screw compressor. Communication between the chilling system and the facility management system takes place via fiber optic cables providing a higher data speed and security. The greatly fluctuating water flowrates and cold brine temperatures are compensated by a horizontal 6 m³ buffer tank. Pipes and buffer tank are made of stainless steel 1.4571 for a higher corrosion protection.
The chilling system was manufactured at our plant in Hamburg and delivered in one piece. Production and installation diagrams and their individual components and pipework were planned in 3D ensuring a higher planning security and then implemented on site.
|Cooling capacity Q0||860 kW|
|EER incl. chilled water pump||2.8|
|Refrigerating agent||30% propylene glycol|
|Sound power||88 db(A)|
|Compressor make and type||Bitzer, screw compressor|