Four-compressor two-system screw chiller, aiming to address industrial cooling needs in sectors like chemical engineering, manufacturing, and large-scale construction. Boasting a cooling capacity of 850KW under air-conditioning conditions (outlet water temperature: 7℃~12℃), the chiller integrates anti-corrosion, remote monitoring, and energy-saving technologies, setting a new standard for efficient and reliable industrial refrigeration.
Core Technological Advantages
1. Anti-Corrosion & Long Service Life：The heat exchange tubes of the condenser and evaporator are made of corrosion-resistant materials-either HAI77-2 aluminum brass tubes or 316L stainless steel-selected based on the properties of the fluid medium. This design significantly enhances the chiller's durability in complex industrial environments.
2. Smart Remote Monitoring：Equipped with a communication interface supporting the MODBUS RTU protocol, the chiller can seamlessly connect to upper-level computers. This enables remote operations such as data recording, historical fault query, and scheduled startup, reducing the need for on-site supervision and improving maintenance efficiency.
3. Comprehensive Protection Systems：The chiller features robust self-diagnostic and protection functions covering electrical, refrigerant, and water system aspects. It guards against phase reversal, phase loss, under/over voltage, overload, water cutoff, and abnormal refrigerant pressure. All alarm parameters are automatically saved for post-fault analysis.
4. High Efficiency & Energy Saving：The evaporator adopts a combined "spray cooling + evaporative cooling" technology, increasing heat exchange efficiency by over 10% compared to conventional evaporators. A microcomputer control system automatically adjusts cooling capacity based on load demands-rapid cooling for high loads and energy-efficient operation for low loads.
5.Key Technical Parameters：Under standard conditions (refrigerant: R134a; evaporation temperature: 7℃; condensation temperature: 30℃), the SF-S850-4LG offers the following specs:
- Cooling capacity: 850KW
- COP (Coefficient of Performance): 4.8 (at 35℃ condensation temperature)
- Power supply: Three-phase 380~415V±5%, 3P/50HZ±2%
- Compressors: 4 units (Refcom, Italy, model 134-S-081) with capacity control (25%~50%~75%~100%)
- Water system: Cooling water flow 182m³/h (resistance 75KPa); chilled water flow 146m³/h (resistance 70KPa)
- Dimensions (L×W×H): 4500×1800×2200mm; Weight: 4300kg
- Noise level: 75±3dB
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