A chiller is a system that passes water instead of air through the evaporator of the refrigeration cycle. The chilled water is circulated at 7/12 °C (air conditioning), 1/6 °C (food processing) or, with glycol added, at −10 °C and below (ice cream, wine, chemicals). The cooling points can be far from the chiller; carrying water in pipes is safer and more flexible than carrying refrigerant.
In the refrigeration sector chillers are used for: milk cooling and pasteurisation, dough and dough-water cooling, fruit juice and beverage lines, process water in meat processing plants, machine cooling in the plastics and chemical industries, and conveyor cooling tunnels. There are air-cooled (fan condenser) and water-cooled (with a tower) versions; scroll, reciprocating or screw compressors are used.
Selection is based on water inlet and outlet temperature, flow rate (m³/h) and ambient temperature; capacity is given in kW and falls as the glycol concentration rises. The pump set, buffer tank and freeze protection are part of the system. You can find Sonkar water chillers among our product groups.