Ultra-low temperature cascade unit

Unit Overview

Ultra-low temperature cascade units are refrigeration systems specifically designed for extremely low-temperature applications (-80°C to -150°C or lower) or scenarios requiring high compressor ratios. Utilizing cascade refrigeration cycle technology, these units integrate high-temperature and low-temperature stage compression to achieve efficient and stable ultra-low temperature cooling. Their core advantages lie in optimized coordination between dual-stage cycles and a uniquely designed low-pressure lubricating oil system, significantly enhancing operational reliability and energy efficiency. They are ideal for industrial and scientific applications demanding stringent low-temperature stability.

Key Parameters

Technical Features & Advantages

1. High Energy Efficiency

   • Cascade Cycle: Independent high- and low-temperature cycles coupled via evaporative condensers, minimizing irreversible losses and improving overall efficiency.

   • Dynamic Load Matching: Automatically adjusts compressor speed and expansion valve opening to reduce energy consumption under partial loads.

   • Advanced Heat Exchangers: Microchannel or plate heat exchangers enhance heat transfer efficiency and reduce unit footprint.

2. Exceptional Reliability

   • Low-Pressure Lubrication System: Dedicated lubricants and oil circuit design ensure stable oil return at temperatures below -100°C, preventing lubrication failure.

   • Multi-Layer Redundancy: Oil separators, coolers, and differential pressure controllers work synergistically to extend compressor lifespan.

   • Rigorous Validation: Passed 2,000-hour continuous operation tests at -150°C and extreme condition shock trials.

3. Broad Temperature Coverage

   • Single-unit operation covers -40°C to -150°C, supporting multi-zone parallel cooling (e.g., gradient cooling in cold chain logistics).

   • Operates reliably in ambient temperatures from -30°C to 50°C, suitable for global climatic conditions.

4. Eco-Friendly & Sustainable

   • Optional natural refrigerants (CO₂/NH₃) or low-GWP refrigerant pairs comply with global regulations (e.g., F-Gas Regulation, Kigali Amendment).

   • Modular design allows future refrigerant upgrades, extending equipment lifecycle.

5. Smart Control & Connectivity

   • HMI interface displays real-time parameters (temperature, pressure, energy consumption).

   • Supports Modbus/OPC protocols for integration into IoT platforms, enabling predictive maintenance and energy management.

Typical Applications

• Industrial Manufacturing: Low-temperature synthesis of chemical materials, lithium battery electrode freeze-drying, specialty gas liquefaction.

• Pharmaceutical & Biotech: Ultra-low temperature vaccine storage (-80°C), freeze-dryer systems, biobank sample preservation.

• Scientific Research: Superconducting material testing, aerospace environment simulation, quantum computing cooling.

• Food Cold Chain: Ultra-low temperature tuna freezing, premium ice cream crystallization control.

Customer Benefits

• Reduced Operating Costs: High COP design lowers electricity expenses, with annual energy efficiency improvements of 15%~30%.

• Minimized Downtime: Optimized lubrication and protection mechanisms reduce failure rates by over 40%.

• Faster ROI: Modular structure simplifies installation and maintenance, reducing total lifecycle costs by 20% compared to conventional units.

For detailed technical solutions or customized configurations, please provide specific operational requirements for tailored recommendations.