Refrigerant Compressors

In cold-chain logistics, commercial refrigeration and air conditioning, and industrial refrigeration, the common heart of these systems is the refrigerant compressor. Fusheng offers 5 refrigerant compressors, all screw type, covering duties from refrigeration and air conditioning to medium- and low-temperature freezing and single-machine two-stage operation, with refrigerants including R22, R404A, R407C, R507 and R134a.

1. Overview of the Five Series

2. Selecting by Duty

• General refrigeration, air conditioning and the cold chain, with a wide cooling capacity span: look at CSR;
• Medium and low temperature freezing (7.5 to -45 °C): look at CSRL/SRL;
• Deep low temperature and multiple units in parallel: look at SDL;
• High pressure differential, needing both cooling and heating: look at the SRT single-machine two-stage;
• Low-temperature freezing while saving machine room floor space: look at SST.

3. Common Features

Several series use the Fusheng 5:6 asymmetric rotor profile, with rotors formed by precision machining; they support VSD operation and an economizer port, and can be run in parallel to meet large cooling capacity requirements. Some series are tested before shipment through a refrigerant system that simulates the user's operating conditions, and use high-efficiency motors with a built-in PTC thermistor to monitor coil temperature. Each series differs in evaporating temperature and refrigerant compatibility, which are key parameters to check one by one during selection.

Conclusion

The five series range from general refrigeration to deep low temperature, and from single-stage to single-machine two-stage, broadly covering the main duties of refrigeration systems. The first step in selection is to define the evaporating temperature and refrigerant, then determine the specific model together with the cooling capacity and installation conditions.