Product Overview
For the largest and most demanding cooling installations including hyperscale data centers, international airport terminals, regional district cooling networks, and LEED Platinum commercial towers, the Midea MagBoost Water Cooled Centrifugal Chiller represents a generational advance in efficiency, reliability, lifecycle cost, and environmental compliance.
At the core of the MagBoost lies the oil-free magnetic bearing centrifugal compressor. Active magnetic bearings levitate the rotating shaft with no physical contact, eliminating mechanical friction, vibration, and the entire oil lubrication system. A permanent-magnet synchronous motor drives a back-to-back two-stage impeller configuration that boosts full-load efficiency by 4% and part-load efficiency by 7% compared to traditional single-stage magnetic bearing designs.
The capacity range spans 230 to 3,000 RT on R134a, with factory compatibility for low-GWP alternatives. The falling-film evaporator requires less refrigerant charge than traditional flooded designs, supporting LEED credit attainment. Minimum 10% load operation and stable performance at 12°C condenser water inlet extend free-cooling hours by 500-1,000 hours annually in moderate climates.
Key Features
Active Magnetic Bearing Technology
- Active magnetic bearings levitate the shaft with zero mechanical contact
- Shaft position monitored 20,000 times per second with micron-level precision
- Eliminates entire oil lubrication system and associated maintenance
- Maintains heat exchanger cleanliness at 0.995+ throughout asset life
- 10-year magnetic bearing warranty coverage
Unprecedented Energy Efficiency
- COP 6.774 at full load - highest in water-cooled centrifugal category
- IPLV 12.03 at part load across 10-100% operating range
- 35-50% annual energy cost reduction vs standard-efficiency chillers
- Back-to-back two-stage impellers boost efficiency
- Permanent-magnet synchronous motor provides higher power factor
Falling-Film Evaporator Design
- Uses significantly less refrigerant than traditional flooded evaporators
- Achieves equivalent heat-transfer performance with thin refrigerant film
- Lower refrigerant charge reduces cost and environmental impact
- Contributes to LEED v4.1 Refrigerant Management credits
- Compatible with low-GWP refrigerants including R1234ze, R513A, and R515B
Extended Operating Range
- 10% minimum load - widest stable operating range in class
- Full efficiency maintained at 10% load without hot-gas bypass
- 12°C minimum condenser water inlet enables extended free-cooling
- 500-1,000 additional free-cooling hours annually
- Captures 5-8% additional annual energy savings
Multi-Refrigerant Compatibility
- R134a baseline for global availability
- R1234ze (GWP less than 1) for stringent regulatory environments
- R515B (GWP 270) as ultra-low-GWP option
- R513A (GWP 573) as near-drop-in R134a replacement
- All options factory-configured as separate product codes
Advanced Acoustic Performance
- 70 dB(A) per AHRI 575 - quietest in 230-3,000 RT capacity range
- Oil-free magnetic bearing eliminates gear-mesh noise and vibration
- Enables indoor installation without acoustic enclosure investment
- Saves $20,000-50,000 in sound-attenuation costs
- Ideal for airport terminals, hospitals, and premium developments
Technical Specifications
| Parameter |
Specification |
| Cooling Capacity |
230-3,000 RT |
| Refrigerant |
R134a (compatible: R1234ze, R513A, R515B) |
| Compressor Type |
Oil-Free Magnetic Bearing Centrifugal |
| Compression Stage |
Back-to-Back Two-Stage |
| Motor |
Permanent-Magnet Synchronous |
| COP |
6.774 |
| IPLV |
12.03 |
| Minimum Load |
10% |
| Minimum Condenser Water Inlet |
12°C |
| Sound Level |
70 dB(A) |
| Warranty - Full Unit |
5 Years |
| Warranty - Magnetic Bearing |
10 Years |
| BMS Protocols |
Modbus RTU, BACnet |
| Origin |
China |
Applications
- Tier III-IV hyperscale data centers
- International airport terminals and transit hubs
- Hospital and research campuses
- LEED Platinum and BREEAM Outstanding commercial towers
- District cooling networks
- Premium hospitality and mixed-use developments
Certifications & Standards
AHRI 550/590 - Performance and IPLV rating for water-chilling packages
AHRI 575 - Sound rating standard for commercial centrifugal chillers
LEED Support - Contributes to LEED v4.1 Energy & Atmosphere and Materials & Resources credits
GB 19577-2024 - Chinese national energy-efficiency standard
CE Marking - European Economic Area conformity
ISO 9001/14001/45001 - Quality, environmental, and occupational health management systems
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