DEVELOPMENT OF A HIGH-PERFORMANCE TURBO CHILLER
Turbo chillers are suitable for large-scale air conditioning systems, and very important equipment for reducing environmental loads in that substantial reduction in electrical power consumption can be expected by enhancing their performance to higher levels. The MHI’s turbo chillers (AART series) with HFC134a as a refrigerant, has achieved performance enhancement on the world’s highest level through improvements in the refrigeration cycle, aerodynamic performance of the compressor and heat exchanger performance, as well as optimum design of the control system. Their high performance characteristics contribute toward substantially reducing electrical power consumed at factories by expanding major applications including district cooling and heating, thermal storage, factory process cooling, and especially factory process cooling for full-year continuous operation. In addition, it has been made possible to reduce the year-round annual electrical power consumption further through the application of optimum variable control using an inverter. Furthermore, the centrifugal chiller technology has also been applied to heat pump chillers that were in the field of screw chillers in the past, which has led us to provide super-high performance small turbo heat pumps.