The water-cooled screw variable frequency chiller unit launched by our company is an efficient industrial grade variable frequency chiller unit. It not only inherits the original fixed frequency quality, but also adds a new type of variable frequency technology. It adopts a well-known brand of variable frequency converter, which greatly improves the energy efficiency of the unit under partial load. It is a double efficient screw unit with full load energy efficiency (COP) and comprehensive partial load performance coefficient (IPLV). The outlet temperature control accuracy is within plus or minus 0.5 degrees, which is widely used in the field of process cold water temperature control, improving product quality and high-precision water temperature requirements.
Main characteristics of cold screw variable frequency chiller
◆ Efficient and energy-saving
By adopting a new type of onboard variable frequency drive technology, the partial load energy efficiency of the unit has been greatly improved, and the highest comprehensive partial load performance coefficient (IPLV) can reach around 10.
◆ Stable and reliable
Single compressor structure with fewer moving parts, the compressor rotor is directly connected to the motor, reducing the number of operating components and further improving the reliability of the compressor; Refrigerant suction cooling motor, with lower operating temperature and more stable operation.
◆ Easy to install
The variable frequency starting cabinet of the water-cooled screw variable frequency chiller unit is integrated into the main unit, simplifying on-site wiring for users; Inject refrigerant and lubricating oil before leaving the factory to facilitate unit installation and save users' installation and commissioning costs.
◆ Advantages of frequency conversion
Variable frequency water-cooled screw chiller soft start reduces the impact of starting current; Equipped with a DC reactor to reduce harmonic interference; There is also a low harmonic filter option, which complies with the IEEE-519 specification for harmonic distortion at the input power of the inverter, and has harmonic filter over temperature protection and capacitor switching functions,.
◆ Environmentally friendly
The water-cooled screw variable frequency chiller can be equipped with R134a refrigerant according to requirements, which has no destructive effect on the Earth's ozone layer and meets the requirements of the Montreal Protocol; The unique falling film evaporator can reduce the refrigerant charge.
◆ Advanced control
The new generation Siemens PLC controller accurately controls the unit, ensures reasonable operation, is equipped with remote monitoring interface, dynamic color touch screen, graphical operation, and improves user experience.
◆ Accurate temperature control
The temperature control accuracy of the chilled water outlet is within plus or minus 0.5 degrees, meeting the requirements of high-precision temperature control.
◆ Multiple energy-saving advantages
The advantages of variable frequency energy saving, evaporator full liquid energy saving, and industrial low-temperature application energy saving.
In short, the water-cooled screw variable frequency chiller launched by the company is mainly used in the industrial field, adopting industrial grade variable frequency design, meeting the energy-saving, precise temperature control, and low-temperature variable frequency chiller with low chilled water temperature in the industrial field.