Thermal Buffer Water Tank 60L - 500L Reducing Heat Pump Cycling Loss
HVAC Buffer Water Tank for Heat Pump, Solar and Boiler Systems The HVAC Buffer Water Tank is designed to add thermal storage capacity to heating and cooling systems, helping balance fluctuations between the heat source and the water distribution circuit. By increasing the effective water volume of ...
Thermal Buffer Water Tank
,Buffer Water Tank 500L
,Thermal Buffer Tank 60L
The HVAC Buffer Water Tank is designed to add thermal storage capacity to heating and cooling systems, helping balance fluctuations between the heat source and the water distribution circuit.
By increasing the effective water volume of the system, the buffer tank can help reduce frequent equipment cycling, improve operating stability and make better use of stored thermal energy. It is suitable for heat pump, solar thermal and boiler systems in residential and commercial applications.
With capacities from 60L to 500L, the series provides multiple options for different system configurations.
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.
| Capacity(L) | 60L | 100L | 150L | 200L | 250L | 300L | 400L | 500L |
|---|---|---|---|---|---|---|---|---|
| Inner tank material | SUS304 | 316L | duplex2205 | |||||||
| Outer case material | Galvanized steel with painting | SUS304 | |||||||
| Insulation | HCFC free foam | |||||||
| Insulation thickness (mm) | 50 | 50 | 50 | 50 | 45 | 45 | 50 | 50 |
| Max. working pressure(bar) | 8 | |||||||
| Circulating inlet/outlet | G1" | G5/4" | G6/4" | G2" | |||||||
| Electric heater | 1.5kW | 3kW | 4kW (Optional) | |||||||
| Thermostat | Optional | |||||||
| Product size (mm) | φ470x705 | φ470x1085 | φ470x1525 | φ520x1575 | φ560x1605 | φ560x1885 | φ700x1605 | φ700x1845 |
| Package size (mm) | 550x550x740 | 550x550x1120 | 550x550x1550 | 605x605x1610 | 645x645x1670 | 645x645x1950 | 790x790x1690 | 790x790x1950 |
The Buffer Water Tank provides additional thermal storage capacity for modern hydronic systems, helping improve system stability and reduce unnecessary equipment cycling. With flexible capacities and multiple material and heating configurations, it is suitable for heat pump, solar thermal and boiler-based HVAC applications.
