Water-cooled chiller range
March 1st 2006

A new EWWD range of high efficiency, flooded type, watercooled chillers has been introduced by Daikin Europe. The cooling-only unit with stepless capacity control operates on R-134a refrigerant.

Seven different sizes are planned, with capacities from 360kW to 1MW and EER values of between 5.2 and 5.35 at full load, rising to 8 at 50% part load. Chilled water is supplied at between 4 and 16°C with a leaving condenser water temperature of between 30 and 50°C. For process or icestorage applications, chilled water down to -5°C is optional.

Chillers use the company's GE type stepless controlled, single screw compressor with high efficiency motor, optimised for use with R-134a. Modulating the sliding valve position according to chilled water temperature enables the compressor to match capacity requirements closely, resulting in high part load efficiencies and stable chilled water temperatures with better control regulation.

Capacity control of the single circuit EWWD unit is infinitely variable between 25 and 100%.

More articles from Daikin Europe NV: