Karnot Permafrost P11 Thermal Battery
Dynamic cooling energy storage for air conditioning and process control
The Karnot Permafrost P11 provides highly efficient cooling energy storage using Plentigrade P11 phase change material. Designed for air conditioning load shifting and process cooling applications, the Permafrost P11 decouples cooling generation from demand, enabling off-peak energy capture and on-demand cold delivery with ultra-low standby losses.
Key Features & Advantages
Engineered for dynamic cooling performance and operational flexibility — the Permafrost P11 delivers powerful cold storage in a compact, efficient package.
Dynamic Cooling Power
Delivers 33 kWh of cooling capacity for air conditioning and process control, storing cold energy generated during off-peak periods for on-demand use.
Flexible Dual Circuits
Features two independent hydronic circuits (High Power and Low Power) that can be configured to suit any cooling application and load requirement.
Energy Resilience
Shift cooling loads to cheaper off-peak tariffs and maintain cooling supply during peak demand periods or grid interruptions.
Ultra-Low Standby Loss
Engineered for maximum retention, with an exceptionally low standby energy loss of just 0.66 kWh per 24 hours.
Technical Specifications
Comprehensive specifications for system design and installation planning.
Performance & Capacity
| Nominal Storage Capacity | 33 kWh112.6 kBTU |
| Standby Stored Energy Loss Rate | 0.66 kWh / 24h2.25 kBTU / 24h |
| Design Discharge Outlet Temperature | 12°C53.6°F |
| Charging Source Temperature | 0°C to 8°C32°F to 46.4°F |
| Phase Change Material | Plentigrade P11 |
Operational & Physical
| Max Flow Rate (High Power Circuit) | 50 L/min13.2 gal/min |
| Max Flow Rate (Low Power Circuit) | 40 L/min10.6 gal/min |
| Maximum Working Pressure | 1.6 MPa (16 bar) |
| Dimensions (W × D × H) | 1200 × 1000 × 1470 mm47″ × 39″ × 58″ |
| Weight | 1,268 kg2,795 lbs |
Additional Advantages
Beyond core performance, the Permafrost P11 delivers system-wide benefits that transform how you manage cooling energy.
System Benefits
- Decouples cooling generation from cooling demand
- Enables demand side management and shifts cooling loads to cheaper off-peak tariffs
- Modular and scalable — thermal batteries can be connected in series or in parallel to increase cooling storage capacity
- Integrates with chillers, heat pumps, and free cooling sources
- Reduces peak electrical demand by buffering cooling loads
- Supports air conditioning, data centre cooling, and industrial process control applications
Lower Costs
A Karnot Permafrost P11 thermal battery is clean and fast to install. Running costs are low because mandatory annual maintenance and inspections are not required. Shift cooling to off-peak electricity tariffs and reduce demand charges for significant operational savings.
Note: As an innovative company committed to continuous improvement, our products are subject to change without prior notice. Always refer to the latest version of this document.
Ready to Optimise Your Cooling Storage?
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