Water-cooled centrifugal chiller
Johnson Controls’ YORK YK-EP Efficiency Plus water-cooled centrifugal chiller uses a patent-pending mechanical compression economizer cycle to boost performance over conventional chiller platforms. The YK-EP uses a OptiSpeed variable speed drive, which can accept medium- or high-voltage power, trimming energy consumption. The chiller is able to operate with 50°F low entering condenser water temperature (ECWT). In facilities with multiple YK-EP chillers, energy savings can be accomplished with series-counter flow arrangement. This reduces the compressor work needed on each chiller, cutting system energy use at design conditions. The YK-EP chiller has capacity of 2,500 to 3,500 tons and is suited for large tonnage applications including district cooling or large central plants such as universities and airports.