Thermal Buffer Water Tank 60L - 500L Reducing Heat Pump Cycling Loss

Heating and cooling systems do not always operate under a constant load. Changes in room demand, outdoor conditions and system flow can cause the heat source to start and stop frequently.

A buffer tank provides additional water volume that can temporarily store thermal energy. This helps create a more stable operating environment for the connected heating or cooling equipment.

Key benefits include:

• Additional thermal storage capacity
• Reduced frequency of equipment start-up
• More stable system operation
• Better coordination between heat source and distribution circuit
• Reduced unnecessary operating costs

The tank is intended for integration into water-based heating and cooling systems and can be used with different heat sources.

Typical applications include:

• Heat Pump Systems
  Provides additional water volume for heat pump heating and cooling circuits, helping the system respond to changing load conditions.

• Solar Thermal Systems
  Stores available thermal energy from solar heating systems for later use within the water circuit.

• Boiler Systems
  Can be incorporated into boiler-based hydronic systems to provide additional thermal storage and improve system stability.

The tank can therefore serve as a practical thermal buffer within different HVAC system architectures.

Different projects may require different material specifications. The inner tank is available in:

• SUS304 stainless steel
• SUS316L stainless steel
• Duplex 2205

The outer casing can be supplied in painted galvanized steel or SUS304 stainless steel, providing additional configuration options for different projects.

Thermal storage is only useful when stored energy can be retained effectively.

The tank uses HCFC-free foam insulation to help reduce heat loss from the stored water. Depending on the selected capacity, insulation thickness is available in 45mm or 50mm configurations.

This helps maintain the stored water temperature between heating or cooling cycles and supports overall system performance.

The buffer tank is configured with dedicated connection points for integration into hydronic systems.

Depending on the model, circulating inlet and outlet connections are available in:

G1" | G5/4" | G6/4" | G2"

The tank configuration also includes an air vent, temperature sensor position, drain and safety valve, providing practical connection points for system installation and maintenance.

The maximum working pressure is 8 bar.

For systems requiring supplementary heating capacity, an optional electric heater can be specified.

Available heater options include:

• 1.5 kW
• 3 kW
• 4 kW

An optional thermostat is also available, allowing the tank configuration to be adapted to different system requirements.

A typical application can be understood as:

Heat Source → Buffer Water Tank → Heating / Cooling Distribution

The tank acts as an intermediate thermal storage component, helping separate variations in heat generation from changes in system demand.

This makes it particularly useful where the connected heat source requires additional system water volume or where more stable operating conditions are desired.

The Buffer Water Tank is suitable for:

• Air source heat pump systems
• Hydronic heating systems
• Hydronic cooling systems
• Solar thermal systems
• Boiler systems
• Residential HVAC projects
• Commercial heating and cooling applications

Its range of capacities and material configurations allows the tank to be incorporated into different system designs.