Flooded Water Cooled Screw Unit

Flooded Water Cooled Screw Unit

The SJFX series full liquid type semi-closed twin-screw chiller unit inherits KINFIT’s consistent core advantages: high efficiency, energy saving, high reliability, and user-friendly control. As a premium water-cooled industrial chiller, it integrates advanced flooded evaporator technology and high-performance twin-screw compressors, delivering stable, cost-effective cooling solutions for HVAC systems, industrial process cooling, and large-scale commercial applications.

High-Efficiency Heat Exchange & Compression Technology

Equipped with enhanced heat exchange tubes, the unit significantly boosts heat transfer efficiency by over 15% compared to standard models, maximizing the utilization of the flooded evaporator. Paired with premium semi-closed twin-screw compressors featuring 5:6 asymmetric rotor design, it achieves stable, low-noise operation with exceptional mechanical efficiency, ensuring superior performance under both full-load and partial-load conditions.

Multi-Compressor Modular Design

Adopting a multi-compressor parallel configuration, the unit realizes stepless capacity regulation (25%-100%) and optimized partial-load efficiency, effectively reducing energy consumption during daily operation. The modular structure also enhances system redundancy, ensuring uninterrupted cooling even if a single compressor malfunctions, greatly improving operational reliability for critical industrial and commercial scenarios.

Intelligent Control & Easy Operation

Fitted with Siemens PLC controllers and a large HMI LCD touch screen, the unit supports real-time monitoring of operating parameters (temperature, pressure, current, etc.), one-key start/stop, and fault self-diagnosis. It also integrates RS485 communication and BACnet protocol, enabling remote monitoring and centralized control for smart building and industrial automation systems. Abandoning flashy but impractical functions, the unit adheres to the design concept of “simple operation, stable performance”, minimizing operation and maintenance costs for users.

Superior Reliability & Durability

Built with a high-efficiency oil separation system (separation efficiency up to 99.5%) and optimized oil return design, it effectively prevents compressor wear and extends service life. The unit is equipped with comprehensive safety protections (high/low pressure, anti-freeze, overcurrent, phase loss protection), ensuring stable and safe operation for over 100,000 hours. It adopts environmentally friendly refrigerants (R134a/R407c), complying with global environmental protection standards.

This flooded type screw chiller is widely used in:

– Industrial cooling: electronics manufacturing, pharmaceutical, chemical, lithium battery, PCB production, and food processing
– Commercial HVAC: large shopping malls, office buildings, hotels, and data centers
– Central air conditioning systems for hospitals, airports, and other public facilities

Product Highlights

✔ High EER & IPLV, meeting national first-class energy efficiency standards
✔ Flooded evaporator for higher heat exchange efficiency than dry-type units
✔ Semi-closed twin-screw compressor, low vibration, low noise
✔ Multi-compressor design, high redundancy, stable operation
✔ Siemens intelligent control, remote monitoring available
✔ Compact structure, easy installation and maintenance
✔ Economical and practical, reducing long-term operating costs