Chillers with screw compressors are used to build powerful refrigeration plants for industrial and administrative facilities of large area and volume. Standard temperature range - on the evaporator: -inlet 12C-outlet of 7C on Condenser - inlet 35C -outlet 45C, Refrigerant R134. One or two phases of compression (with one or two compressors). Modern design can improve the energy efficiency of compressors, as well as the reliability and functionality. The main innovation - the use of evaporators and a condenser for the unprepared, sea, ground water, as well as the method of partial switching power by means of valves, the use of ozone-friendly refrigerants. The power range of screw chillers - 650-2400 kW