Gas Suspension Oil-free Variable Frequency Centrifugal Refrigeration Unit

Performance Advantages

1. High Energy Efficiency: The chiller meets the national first - level energy - efficiency standard. Under national standard operating conditions, its COP (Coefficient of Performance) can reach 6.8, and the integrated part - load value (IPLV) can reach 11.0. It has significant energy - saving advantages over traditional chillers. For example, compared with common screw chillers, its energy - efficiency ratio is approximately 30% higher; compared with traditional centrifugal or multi - connected units, it is about 20% higher; and compared with magnetic suspension units, it is about 5% higher. The chiller can adjust the chilled water outlet temperature according to the equipment's working characteristics (usually between 10 - 15°C, with a maximum of 20°C). For every 1°C increase in the chilled water temperature, the unit's efficiency can be increased by 2%.

2. Stable Operation: The air - suspension centrifugal compressor uses ultra - high - precision hydrostatic air - floating bearings. High - pressure gas lifts the compressor rotor, forming an air film between the bearing and the rotor. The rotor is in a suspended state from startup, achieving true zero - contact and zero - friction between the rotor and the bearing. This eliminates issues such as wear caused by poor lubrication and compressor damage due to poor oil return, which are common in traditional compressors. The high - stiffness rotor system also ensures low vibration and stable operation.

3. Low Noise and Vibration: All moving parts of the air - suspension centrifugal chiller are suspended during operation. The design of the high - stiffness rotor system reduces long - cantilever effects, resulting in low vibration and noise levels. The operating noise is less than 70 dB, making it especially suitable for environments where quiet operation is required.

4. Low - Cost Maintenance: This chiller requires no lubricating oil replacement, no filter element replacement, and no oil system maintenance. Compared with magnetic suspension units, it has fewer electrical components such as multi - position detection sensors, resulting in a lower failure rate, high reliability, and reduced costs in terms of labor, installation, transportation, maintenance, and noise and vibration isolation.

5. Long Lifespan and Low Failure Rate: The air - suspension centrifugal compressor has no friction or wear, which significantly extends its lifespan. The chiller's design ensures stable operation, with a gas supply system that uses a small amount of refrigerant from the condenser for the compressor bearings, eliminating the need for a separate gas - supply system. The back - to - back design of the centrifugal impeller with the motor in the middle further improves the bearing's lifespan and reliability. Over a ten - year period, the performance degradation of this chiller is less than 4%, while that of ordinary units is around 20%.

Core Components

Technical Parameters