Compound Refrigeration Double Stage Screw Compressor Rotary Compressor

Compound two-stage screw refrigeration compressor units are new high-efficiency compressors independently developed
by YANTAI MOON and are applicable to cryogenic refrigeration conditions at the vaporization temperature lower than
-25ºC . The efficiency of compound two-stage screw refrigeration compressor units is remarkably higher than that of single-stage
compressor units with economizers. The standard compressor units include five sorts of specifications such as four sorts of
open type compound two-stage screw refrigeration compressors and one sort of semi-enclosed type compound two-stage
refrigeration compressors. Open type compound two-stage screw refrigeration compressors are applicable to two sorts of
refrigerants such as ammonia and fluorine, and semi-enclosed type compound two-stage refrigeration compressors are
applicable to fluorine refrigerant.
Compound two-stage refrigeration compressor units are widely applied in industries including food, refrigeration and cold
storage, low temperature logistics, new energy resources, petrochemical industry, hydroelectric power, coal, pharmacy,
artificial refrigeration environment, etc. and are the optimal compressor unit model in cryogenic refrigeration environment.

Technical features
Both the high pressure stage and the low pressure stage of LG2016MS, LG2520MS and LG3225LS compressors are provided with
an energy regulation device, which can thus ensure that compressor units always run highly effectively and economically under
various low temperature working conditions.
Adoption of high-efficiency national patent rotor profiles with proprietary intellectual property rights
Reliable and durable imported mechanical seal
Adoption of a lubrication system combining forced oil feeding and differential oil feeding so as to realize smooth and stable
operation of compressors
Three-stage oil separation systems, high-efficiency molecular sieves, separation efficiency 3~5ppm
High precision air intake and oil filter elements to ensure normal working of compressors
The oil cooling system can use thermal siphon cooling mode or water cooling mode.
A wide variety of control modes and configurations
There are a variety of stand-alone two-stage screw refrigeration compressor unit configurations according to users` needs.