Karnot Permafrost P5 Thermal Battery
Low-temperature cooling storage using Plentigrade P5 phase-change material
The Karnot Permafrost P5 delivers highly efficient, low-temperature cooling storage for commercial and industrial applications. Using Plentigrade P5 PCM, it provides on-demand cooling down to −40°C in a compact, modular form factor. Ideal for cold chain logistics, process cooling, and demand-side management of refrigeration loads.
Key Features & Advantages
Engineered for ultra-low-temperature performance and operational flexibility — the Permafrost P5 delivers powerful cooling storage with exceptional efficiency.
Low Temp Operation (−40°C)
Charges at temperatures as low as −40°C, enabling deep-cold storage for demanding refrigeration and process cooling applications.
High-Performance Circuits
Features two independent hydronic circuits (High Power and Low Power) that can be configured to suit any cooling application and load requirement.
Rapid Response (50 L/min)
High flow rates of up to 50 L/min on the HP circuit allow the battery to respond rapidly to peak cooling demands and recharge quickly.
Exceptional Efficiency
Industry-leading standby energy loss of just 0.91 kWh per 24 hours ensures stored cooling energy is retained for when it is needed most.
Technical Specifications
Comprehensive specifications for system design and installation planning.
Performance & Capacity
| Nominal Storage Capacity | 38 kWh129.7 kBTU |
| Standby Stored Energy Loss Rate | 0.91 kWh / 24h3.1 kBTU / 24h |
| Design Discharge Outlet Temperature | 6°C42.8°F |
| Charging Source Temperature | −40°C to 3°C−40°F to 37.4°F |
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 | 1,152 kg2,540 lbs |
Additional Advantages
Beyond core performance, the Permafrost P5 delivers system-wide benefits that transform how you manage cooling energy.
System Benefits
- Decouples cooling generation from cooling demand for maximum operational flexibility
- Enables demand side management and shifts cooling loads to cheaper off-peak electricity tariffs
- Modular and scalable — thermal batteries can be connected in series or in parallel to increase cooling storage capacity
- Reduces peak electrical demand by storing cooling energy during low-demand periods
- Integrates with existing chillers, heat pumps, and HVAC&R equipment
- Supports cold chain resilience with stored cooling reserve for backup during power interruptions
Lower Costs
A Karnot Permafrost P5 thermal battery is clean and fast to install. Running costs are low because the exceptional 0.91 kWh/day standby loss minimises energy waste, and mandatory annual maintenance and inspections are not required.
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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