CC series Magnetic levitation  DC inverter centrifugal chillers

Gree CC series Magnetic levitation DC  inverter centrifugal chillers，range of refrigeration capacity 130RT-1000RT, Unit at full load up to 7.19 coefficient of performance COP, part load comprehensive energy efficiency coefficient IPLV up 12.06, is the highest in the industry. Magnet synchronous motor, two-stage air-supplying enthalpy-adding, direct-drive motor impeller, full loading hydraulic evaporator ,and other applications of much leading technology, which greatly enhance the energy performance of the unit. using the aviation industry grade magnetic bearings to replace the traditional mechanical bearings, oil-free refrigeration system to achieve the operation, to avoid the complexity of lube oil system, to further enhance performance. Advanced and reliable industrial-grade computer control system, strong group control technology and building communication interface, ensure the unit's excellent operating performance. March 7, 2014, by the authority of the international expert group identified that Gree-developed maglev frequency centrifugal refrigeration compressor and water chilling unit is world leading. The unit can widely be used in air conditioning system of hotel, auditorium, office building etc.

Features:.

*Magnet synchronous motor direct driving impeller

Based on High-speed permanent magnet synchronous frequency motor,in the range of unit operation, the motor efficiency over 96%, the highest efficiency reach up to 97.5%, exceeding the national level energy levels, enhance the efficiency of 4%

* rare earth permanent magnet synchronic motor

Compressor adopt advanced rare earth permanent magnet synchronic motor,rotor is permanent magnet,mpore less motor harmonic loss, more higher motor efficiency.the motor is enclosed construction, refrigerant cooling, motor temperature is controllable,higher reliability

* High-Precision magnetic bearing technology

In running the rotor is in a suspended state, no mechanical friction, completely oil-free running, eliminating the influence of lubricating oil heat exchanger, more power be saved

* Two-stage compression cycle intermediate air-supplying

Two-stage compression intermediate air-supplying refrigeration cycle increase efficiency over 5% than Single-stage compressor refrigeration cycle.

2. Stable and Reliable

* Fewer moving parts, no wear running

Compressor adopt high-speed motor direct-drive dual-stage impeller, cancel overdrive gear, the entire refrigeration system is only one moving part, improve the reliability of the unit from the source. Compressor using the aviation industry grade magnetic bearings , the rotor is in a suspended state in the running, to avoid bearing friction, no structural vibration, low noise running. Bear no maintenance in unit service life. meanwhile avoiding the management and control of lubricating oil, improve the reliability of the unit

* Reliable Surge prevention and surge protection technology

Preset anti-surge guard line and transition zone, timely adjustment, make the unit away from the surge point, when the external conditions had mutations, can accurately determine the unit conditions, timely protection unit

3.Powerful,easy to operation

Colorful large LCD touch screen

The user-friendly touch-screen design, use text images, tables and curves  and so on  different display ,achieved  comprehensive monitoring and easy control to units. Multi-angle to record and display the operating status of the unit. Sensors, and valve status and operating parameters, operation is easy and quick

Group control and Building control

Advance and reliable industrial micro-conputer control system,powerful group control module and building communication interface.

5.Leading environmental technology

The entire unit designed specifically for R134a refrigerant, R134a as refrigerant CFC-free and efficient (ODP = 0) does not have any damaging effects on the ozone layer, is new and efficient refrigerant. The system uses R134a is positive pressure running, there is no non-condensable gas into the system. System cleanliness is high, no additional purchase necessary vacuum suction recovery unit. Compared with the negative pressure design unit, the unit is compact, small size, can greatly reduce the unit area