Flooded type water cooled screw chiller (PCB Control)
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6.
Major system components
6.1 Advanced twin screw compressor
Midea screw chiller equipped with the 3rd generation industrial compressor that has the latest
advanced 5-6 Asymmetry Dentiform Semi-hermetic Screw Rotors. The rotors are processed by
high-precision CNC and each part is well-proportioned and none-gap matching, which minimizes
the friction resistance and clearance lost, guarantees quiet running and good duration.
MWSC_A-FB3
Series units are provided with a high efficiency oil separator to maximize oil extraction.
Compressors have a infinitely variable control down to 25% of its total capacity. This control is made
by means of capacity slides controlled by microprocessors.
Standard starter is star-delta type. Infinitely capacity control type is available (as option).
With 5-6 asymmetry dentiform, the screw rotor gained patent by improving the shape of German
rotor GHH, proved having good balance, small vibration, and low noise due to balance testing by
special machine. Comparing with normal screw rotor with 4-6 dentiform, heat efficiency of the rotor
with male and female rotor adopting 5-6 dentiform increase by 10-12% and energy saves by 25%,
the rotor also gained British and American patent.
The bearing of compressor is from SKF, Sweden, the long lifespan of which ensures screw-type
main unit to run continuously more than 50,000 hours.
