The introduction of heat pump in cold climate so far has been limited, due to dramatic reduction of heating output and COP value. To overcome this issue, Mitsubishi Heavy Industry (MHI) has developed a new heat pump with world’s first CO2 refrigerant Scrotary two stage compressors for commercial use in ambient temperature down to -25 degrees Celsius. The new ESA30 is capable of maintaining rated heating output at output at outdoor conditions of -7 degrees Celsius as well as being able to heat water up to 90 Degrees Celsius in an extremely cold outdoor condition of -25 degrees Celsius. Introduction of new Scroll-rotary technology, combining scroll and rotary technology is capable of delivering high efficiency at high and low pressure rations, respectively. Through introduction of a gas injection system in the medium-pressure housing, MHI has managed to increase the circulating volume of the refrigerant. The new ESA30 supports multiple installation connection and controlling up to 16 units, while being capable of supplying up to 120 tons of hot water at 60 degrees Celsius.
The new ESA30 features an easy to operate touch screen controller, allowing its operator to set the weekly schedule with the operation timer as well as evaluating the remaining amount of hot water through its graphical display. The new ESA30 can be used in conjunction with in-house remote monitoring systems, capable of failure prognosis while providing information on preventive maintenance. The new ESA30’s target market will be primarily restaurants, supermarkets, nursing care facilities as well as hotels.
