iCRYO 20
20kW Air-Cycle Ultra-Low Temperature CryoChiller
The Karnot iCRYO 20 is our high-capacity ultra-low temperature solution for larger-scale applications from -40°C to -110°C. Engineered with a robust 22kW motor and water-cooled turbo-compressor, this system delivers superior cooling capacity for industrial food storage, pharmaceutical manufacturing, and advanced materials testing — while maintaining zero GWP, zero ODP, and completely oil-free operation.
Key Features at a Glance
Ultra-Low Temperatures
Operates from -40°C to -110°C with stable, reliable performance for the most demanding cryogenic applications.
Natural Air Refrigerant
Uses only R729 (air) as refrigerant — zero GWP, zero ODP, zero TFA. Completely natural and free.
100% Oil-Free
Turbo-compressor design eliminates oil contamination risks and reduces maintenance requirements significantly.
Rapid Auto-Restart
Automatically restores all parameters within 30 seconds after power interruption for continuous operation.
Variable Load Operation
Partial load capability ensures high energy efficiency and flexible response to specific cooling demands.
Snow Trap Protection
Integrated humidity extraction prevents frost buildup, eliminating energy-consuming defrost cycles.
Ideal Applications
The iCRYO 20 is engineered for large-scale industrial and research applications requiring high-capacity ultra-low temperature control.
Industrial Food Storage
Large-scale frozen food warehousing, flash-freezing facilities, and cold chain logistics requiring reliable ultra-low temperatures.
Pharmaceutical Manufacturing
Large-scale lyophilisation, vaccine production, and biologics manufacturing with strict contamination-free requirements.
Advanced Materials Testing
Materials research, thermal cycling tests, and quality control laboratories requiring precise ultra-low temperature control.
Large-Scale Biological Storage
Biobanks, research facilities, and medical institutions storing large volumes of biological samples and specimens.
Industrial Metal Treatment
High-volume cryogenic tempering and treatment for aerospace, automotive, and tooling manufacture.
Process Cooling
Industrial processes requiring continuous, high-capacity ultra-low temperature cooling for production operations.
Performance Characteristics
Cooling Capacity & Power Consumption vs. Temperature
Performance Specifications
| Temperature Range | -40°C to -110°C |
| Cooling Capacity @ -40°C | 13.7 kW |
| Cooling Capacity @ -70°C | 10.8 kW |
| Cooling Capacity @ -110°C | 6.5 kW |
| Air Supply to Chamber | 500 – 1,560 kg/h |
Technical Specifications
| Refrigerant | R729 (Natural Air) |
| Compressor Type | Karnot Turbo-Compressor (Water-Cooled) |
| Rated Motor Power | 22 kW |
| Power Supply | 3 PE+N, 400V, 50Hz |
| Maximum Current | 80 A |
| Recommended Breaker | 100 A |
| Sound Pressure Level | 75 dBA @ 1m (Maximum) |
Dimensions & Weight
| Dimensions (L×W×H) | 1550 × 1850 × 2000 mm |
| Net Weight | 2,000 kg (± 50 kg) |
| Cabinet Material | Industrial Grade Steel with Powder Coating |
Advanced Air-Cycle Technology
Open-Cycle Design
The system operates on the principle of an open-air cycle: air passes through an integrated snow trap, is cooled by the turbo module, and is delivered to the client's chamber at the specified temperature — ensuring reliable, stable performance even at the most extreme temperatures.
High-Capacity Performance
With a 22kW motor delivering 13.7 kW at -40°C, the iCRYO 20 is built for larger-scale industrial applications. Partial load operation ensures high energy efficiency and flexibility to match actual cooling demand without unnecessary energy consumption.
Zero Environmental Impact
Using natural air (R729) as the sole refrigerant — zero GWP, zero ODP, zero TFA. Air is free, abundant, and requires no specialised handling, storage, or disposal under any current or future regulation.
Water-Cooled Turbo-Compressor
Superior Heat Rejection
The water-cooled turbo-compressor provides more efficient heat removal than air cooling — particularly important at higher capacities and in continuous industrial operation where ambient temperatures may be elevated.
Contamination-Free Operation
Completely oil-free operation eliminates contamination risks critical for food, pharmaceutical, and semiconductor applications. Maintenance costs are dramatically reduced and component lifespan extended compared to conventional compressors.
Snow Catcher System
Humidity Extraction Device (HED)
At ultra-low temperatures, airborne moisture instantly converts to snow. The integrated Snow Catcher continuously removes this moisture, preventing frost buildup on products and equipment and eliminating defrost cycles entirely.
Continuous Industrial Operation
The iCRYO 20 runs without interruption — no defrost downtime, no temperature fluctuations — making it ideal for continuous industrial processes and critical pharmaceutical operations where product integrity cannot be compromised.
Technical Drawing
Interested in the iCRYO 20?
Contact our specialist team to discuss your high-capacity ultra-low temperature application