Midea Water Cooled Screw Chiller - 330 to 1990 kW
Advanced water-cooled screw chiller platform featuring COP 5.5 efficiency, AHRI 550/590 certification, and semi-hermetic screw compressors with SKF bearings designed for 50,000+ hour service life.
Investment Overview
Water-cooled chiller economics offer higher initial investment but significantly lower operating costs per kilowatt. The Midea platform includes two complementary series: SHWE (R134a, fixed-speed, 94.6-565.6 RT / 332.6-1,988 kW, COP 5.534, IPLV 8.085) and SCWG (R513A variable-speed + R134a fixed-speed, 90-550+ RT).
The SHWE series excels in stable cooling applications like hospitals and industrial processes, delivering optimal lifecycle costs. The SCWG series provides variable-frequency operation for fluctuating demand, achieving 20-30% part-load efficiency improvements with 2-3 year payback periods.
Both series feature semi-hermetic twin-rotor screw compressors with SKF bearings rated for 50,000+ operating hours, eliminating 2-3 major compressor overhauls over a 25-year lifespan. Stepless capacity regulation maintains 65 dB(A) at part load for quiet operation in sensitive environments.
Total Cost of Ownership Advantages
- COP 5.534 / IPLV 8.085 (SHWE) - Full-load and part-load efficiency leaders reducing annual cooling costs by 25-35%
- SKF Bearing, 50,000+ Hour Life - Eliminates 2-3 compressor overhauls, saving $80,000-150,000 per unit
- Semi-Hermetic Twin-Rotor Screw - Field-serviceable design reduces overhaul costs by 40-60%
- Stepless Capacity Regulation - Continuous modulation from 100% to 12.5% with 65 dB(A) part-load noise
- R513A Variable-Speed Option (SCWG) - Forward-compatible with F-Gas regulations and 20-30% part-load efficiency improvement
- Compact Footprint - 30-40% smaller than equivalent air-cooled units, maximizing valuable floor space
- 65 dB(A) Part-Load Noise - Suitable for installation near occupied spaces without acoustic enclosures
Project Applications
Hospital & Healthcare Campus (500-2,000 RT)
SHWE fixed-speed series handles baseload efficiently while SCWG variable-speed units cover peak demand. Combined plant IPLV of 8.0+ reduces annual cooling energy costs by $60,000-180,000 with 1.5-2.5 year payback.
Industrial Process Cooling
50,000-hour SKF bearing life ensures reliability with minimal interventions. Stepless capacity regulation maintains process water temperature within ±0.3°C, preventing production losses of $20,000-100,000 annually.
Commercial High-Rise Buildings
Compact design recovers valuable basement space worth $30,000-150,000 in leasable area per unit over 25-year holdings.
District Energy & Central Energy Stations
SCWG variable-speed units maintain system IPLV above 7.5 at 40-80% load, achieving 30-40% energy cost savings with 2-3 year payback.
Certifications
- AHRI 550/590 - Performance and IPLV rating certification
- Eurovent - Independent European performance verification
- CE Marking - European Economic Area conformity
- GB Standards - Chinese national energy-efficiency compliance
Technical Specifications
| Parameter |
SHWE (R134a Fixed-Speed) |
SCWG (R513A VFD + R134a Fixed) |
| Cooling Capacity |
94.6-565.6 RT (332.6-1,988 kW) |
90-550+ RT |
| Refrigerant |
R134a |
R513A (VFD) / R134a (Fixed) |
| Compressor Type |
Semi-Hermetic Twin-Rotor Screw |
Semi-Hermetic Twin-Rotor Screw |
| Bearing |
SKF, 50,000+ Hour Rated Life |
SKF, 50,000+ Hour Rated Life |
| COP |
5.534 |
5.5+ |
| IPLV |
8.085 |
8.0+ |
| Capacity Regulation |
Stepless 100%-12.5% |
Stepless 100%-12.5% |
| Part-Load Noise |
65 dB(A) |
65 dB(A) |
| Certifications |
AHRI 550/590, Eurovent |
AHRI 550/590, Eurovent |
Why Choose Hongtai
- System-Level Design Review - Comprehensive condenser-water loop evaluation to ensure rated COP performance
- Bearing-Life Documentation - SKF bearing traceability certificates and life calculations for asset management
- Commissioning & Performance Testing - On-site or remote support with calibrated performance verification
- 25-Year Lifecycle Cost Modeling - Detailed TCO analysis comparing Midea options against competing brands
- Spare-Parts Forward-Stocking - Pre-positioned compressor components for minimal repair time
Your message must be between 20-3,000 characters!
