Central Bank Mini (P58) Thermal Battery

Compact, high-density thermal energy storage for commercial and industrial applications

Sunamp Central Bank Mini (P58) is a high-performance thermal battery designed to store and release heat for commercial buildings and industrial processes.

Using Sunamp’s patented Plentigrade® P58 phase change material, each unit stores up to 80 kWh of thermal energy in a compact footprint. Central Bank Mini can store heat from multiple sources, including heat pumps, boilers, renewable energy systems and recovered waste heat, making that energy available when it is needed.

By decoupling heat generation from heat demand, Central Bank Mini can help businesses make better use of low-carbon and recovered heat, shift thermal loads and reduce the space required for thermal energy storage.

It can support applications including process heat, hot water for CIP and washdown, space heating, steam hotwell pre-heating and integration with higher-temperature heat pump systems.

Features

Up to 80 kWh nominal thermal storage capacity per unit, using Sunamp Plentigrade® P58 phase change material.

Up to 8 times smaller than an equivalent hot water thermal store, helping reduce plant room space requirements.

Ultra-low heat loss of approximately 3 kWh per 24 hours at a 45°C temperature differential.

Works with multiple heat sources, including heat pumps, electric and biogas boilers, solar thermal and geothermal systems.

Heat pumps and electric boilers can make use of electricity from the grid or on-site renewables including solar PV and wind generation.

Captures and stores recovered heat from sources including process cooling heat exchangers, chiller heat rejection, air compressors and air heat recovery, and flue gas heat recovery systems.

Supports useful heat demands including process heat, CIP and washdown hot water, space heating, steam hotwell pre-heating and higher-temperature heat pump systems.

Modular and scalable, with multiple Central Bank Mini units configurable in series or parallel to increase thermal storage capacity according to project requirements.

Two independent hydronic circuits – High Power and Low Power – provide flexibility for different charging, discharging and system integration requirements.

Supports load shifting and grid flexibility, allowing heat to be generated, captured or stored at a different time from when it is required.

Helps businesses make greater use of recovered heat and renewable energy that may otherwise be wasted or unavailable when demand occurs.

No regular maintenance is required for the Central Bank Mini thermal battery itself. Connected system components should be maintained in accordance with their applicable requirements.

Integrated heat exchangers and a sealed, insulated PCM cell provide efficient thermal storage and heat transfer.

Technical information

Product: Central Bank Mini
Model: Central Bank Mini (P58)
Product type: Phase change material thermal battery / thermal energy storage
Application: Commercial and industrial thermal energy storage
Storage medium: Sunamp Plentigrade® P58 phase change material
Nominal thermal storage capacity: Up to 80 kWh
PCM phase transition temperature: 58°C
Nominal heat loss: Approximately 3.0 kWh/24h at ΔT 45°C
Maximum charging flow temperature: 80°C
Minimum charging flow temperature: 65°C
Design discharge flow temperature: 53–55°C
Maximum working pressure: 10 bar

High Power Circuit

Flow rate: 21–95 L/min
Power range: 20–65 kW
Circuit volume: 51 L

Low Power Circuit

Flow rate: 5–44 L/min
Power range: 5–31 kW
Circuit volume: 22 L

Dimensions

Width: 1,200 mm
Depth: 1,000 mm
Height: 1,470 mm
Base unit weight: Approximately 1,500 kg
Installed unit weight: Approximately 1,573 kg
Hydronic connections: 4 × 1¼″ female BSP parallel brass fittings

Central Bank Mini is designed for installation in an indoor, weather-protected and frost-free environment.

System configuration

Central Bank Mini can be installed as a standalone thermal store or combined with additional units in series or parallel configurations to provide greater thermal storage capacity.

Its two independent hydronic circuits provide flexibility when integrating the thermal battery with different heat sources and heat demands.

For potable domestic hot water applications, Central Bank Mini should be connected through an appropriate external plate heat exchanger.

Typical heat sources

Central Bank Mini can store thermal energy from sources including:

• Heat pumps
• Electric boilers
• Biogas boilers
• Solar thermal
• Geothermal systems
• Heat generated using on-site solar PV or wind electricity
• Process cooling heat recovery
• Chiller heat rejection
• Air compressors and air heat recovery
• Flue gas heat recovery

Typical end uses

Stored heat can be used for applications including:

• Industrial and commercial process heat
• Hot water for clean-in-place (CIP) processes
• Washdown hot water
• Space heating
• Steam hotwell pre-heating
• Pre-heating heat generation systems
• Integration with higher-temperature heat pumps

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