iCRYO 15
15kW Air-Cycle Ultra-Low Temperature CryoChiller
The Karnot iCRYO 15 delivers enhanced cooling capacity for mid-scale ultra-low temperature applications from -40°C to -110°C. With a robust 15kW motor and air-cooled turbo-compressor, this system provides ample capacity for biological storage, cryotherapy chambers, and industrial metal treatment — 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 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 15 is engineered for mid-scale industrial and research applications requiring stable ultra-low temperatures.
Semiconductor Testing
Precise temperature control for device performance evaluation and dry etching processes requiring extreme cold.
Pharmaceutical Freeze-Drying
Lyophilisation of vaccines, antibiotics, and biologics with stable, contamination-free temperature control.
Chemical Process Control
Precise reaction temperature management for exothermic processes and high-purity chemical synthesis.
Biological Sample Storage
Freeze chambers for long-term preservation of biological materials, tissue samples, and research specimens.
Metal Treatment
Cryogenic tempering and treatment of metals for improved durability, reduced residual stress, and enhanced properties.
Cryotherapy Chambers
Medical and sports recovery facilities requiring controlled exposure to ultra-low temperature air.
Performance Characteristics
Cooling Capacity & Power Consumption vs. Temperature
Performance Specifications
| Temperature Range | -40°C to -110°C |
| Cooling Capacity @ -40°C | 9.58 kW |
| Cooling Capacity @ -70°C | 7.29 kW |
| Cooling Capacity @ -110°C | 4.08 kW |
| Air Supply to Chamber | 360 – 1,200 kg/h |
Technical Specifications
| Refrigerant | R729 (Natural Air) |
| Compressor Type | Karnot Turbo-Compressor (Air-Cooled) |
| Rated Motor Power | 15 kW |
| Power Supply | 3 PE+N, 400V, 50Hz |
| Maximum Current | 63 A |
| Recommended Breaker | 80 A |
| Sound Pressure Level | 75 dBA @ 1m (Maximum) |
Dimensions & Weight
| Dimensions (L×W×H) | 1545 × 1850 × 2040 mm |
| Net Weight | 2,050 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 then delivered to the client's chamber at the specified temperature. This ensures reliable and stable performance even at extremely low temperatures.
Enhanced Cooling Capacity
With a robust 15kW motor, the iCRYO 15 provides ample cooling for mid-scale facilities — biological and pharma storage banks, cryotherapy chambers, and industrial metal treatment. Partial load operation ensures high energy efficiency and flexibility to meet specific application requirements.
Zero Environmental Impact
Using natural air (R729) as the sole refrigerant delivers zero GWP, zero ODP, and zero TFA. Air is free, abundant, and requires no specialised handling, storage, or disposal — ever.
Oil-Free Air-Cooled Compressor
No Water Cooling Required
The iCRYO 15 features an air-cooled turbo-compressor, eliminating the need for chilled water infrastructure. This simplifies installation and reduces operational complexity compared to water-cooled models.
Contamination-Free Operation
Completely oil-free operation eliminates contamination risks critical for pharmaceutical, semiconductor, and food-grade applications — while dramatically reducing maintenance costs and extending component lifespan.
Snow Catcher System
Humidity Extraction Device (HED)
At ultra-low temperatures, moisture in the air instantly converts to snow. The integrated Snow Catcher removes this moisture continuously, preventing frost buildup on products and equipment and eliminating defrost cycles entirely.
Continuous Operation
Unlike traditional cryogenic systems that require periodic defrosting — causing temperature fluctuations and product quality concerns — the iCRYO 15 runs without interruption, maintaining stable conditions and consistent process performance.
Technical Drawing
Interested in the iCRYO 15?
Contact our specialist team to discuss your ultra-low temperature application