Dual-Compressor Two-Stage Refrigeration Unit

Each compressor in the Dual-Compressor Two-Stage Refrigeration Unit is independently controlled, employing staged start-up and saving up to 30% energy during the preheating phase. The system is assembled, tested, and validated in a factory in China.

Key Features

1. Two-Stage Compression: Low-pressure and high-pressure stages work together, each with an optimal pressure ratio (3:1 to 5:1).

2. Energy Efficiency: Staged start-up reduces energy consumption by up to 30%.

3. Fault Tolerance: Even if one compressor fails, the other can maintain critical cooling functions.

4. Fully PLC Automation: Includes load balancing, defrosting cycles, alarms, and SCADA integration.

5. Differential Pressure Lubrication: Eliminates the need for an oil pump motor, reducing energy loss and potential points of failure.

6. Made in China: Assembled using high-quality components from international suppliers.

Technical Parameters

Applications

● Quick Freezing: Dual-Compressor Two-Stage Refrigeration Unit suitable for meat, seafood, and prepared foods (-35 °C to -45 °C).

● Cold Storage: Large-scale frozen warehouses (-25 °C to -35 °C).

● Chemical and Pharmaceutical: Solvent condensation and reaction cooling (-40 °C to -60 °C).

● Low-Temperature Labs: For environmental chambers and cryogenic testing (down to -60 °C).

Why Choose Lynxcool?

20+ Years of Expertise in industrial refrigeration.

Custom Engineering to meet specific operational conditions.

Factory-Pre-Tested in China for quick, reliable commissioning.

Certifications: ISO 9001, CE, PED, ASHRAE 15, ATEX (optional).

Lead Time and Support

Production Time: 10–16 weeks, depending on configuration.

Installation: 3–7 days, with 2–4 days for commissioning.

Support: 24/7 technical service, with remote diagnostics and on-site assistance.

FAQ

Q: When should I choose a Dual-Compressor Two-Stage Refrigeration Unit instead of a single-unit unit?

A: A dual-compressor system should be chosen when the operating temperature is below -30 °C, when load flexibility is required, or when critical systems require redundancy. Single-unit units have a simpler structure but lack staged start-up and fault tolerance.

Q: Are these units really manufactured in China?

A: Yes, all Dual-Compressor Two-Stage Refrigeration Units are designed and manufactured in China, meeting ISO 9001 quality standards and international CE requirements.

Q: Can I use ammonia (R717) as a refrigerant?

A: Yes, we support R717 (ammonia), which is the most efficient choice for large industrial systems. We also support R404A, R507A, and some HFO mixed refrigerants.

Q: How do I determine the intermediate pressure?

A: To achieve optimal compressor efficiency, the intermediate pressure is automatically set to the geometric mean of the condensing and evaporating pressures (pm = √(pk × p₀)).

Q: What happens if a compressor fails?

A: If the low-pressure stage compressor fails, the high-pressure stage compressor can continue operating. If the high-pressure stage compressor fails, the low-pressure stage compressor will maintain cooling at a reduced capacity. The PLC will reconfigure the system and issue an alarm to the operator.

Q: Do you support SCADA or BMS integration?

A: Yes, our PLC system supports Modbus RTU/TCP, BACnet MS/TP, Profibus, and OPC-UA protocols, and can be seamlessly integrated with third-party SCADA, BMS, or EMS platforms.