CO2 Secondary Refrigeration Unit
This secondary refrigeration unit is designed for medium and large cold storage. It utilizes R744 as a secondary refrigerant and is compatible with multiple primary refrigerants.




Technical Specifications
Product Overview
High-Efficiency CO2 Secondary Refrigeration
This advanced secondary refrigeration unit utilizes R744 (CO2) to provide a safe, environmentally friendly, and efficient cooling solution for medium and large-scale cold storage facilities. By eliminating refrigeration oil from the evaporator and pipeline, the system significantly improves heat transfer efficiency and overall COP performance. Designed with modularity in mind, it provides stable operation even at low temperatures down to -30°C.

Technical Specifications
Energy Regulation Stages
- 100%
- 75%
- 50%
- Primary Refrigerants
- R22R507AR404AR134AR448AR449A
- Secondary Refrigerant
- R744 (CO2)
- Evaporation Temperature Range
- -45 to -5°C

System Features
Key Operational Advantages
- Non-toxic and non-flammable operation
- Reduced frost formation rate
- Improved heat transfer efficiency
- Lower total operating costs
Integrated System Components
| Component Name |
|---|
| Gas-liquid separation device |
| Compressor |
| Oil separation device |
| Siphon device |
| Ventilation system |
| Control & Warehouse cabinets |





