High Efficiency Hydronic Buffer Water Tank For Heat Pump HVAC Systems

High Efficiency Buffer Water Tank for Heat Pump HVAC Systems

The Buffer Water Tank is an essential component for modern hydronic heating and cooling systems. It is designed to increase system water volume, optimize heat source operation and improve overall HVAC performance.

By acting as a thermal storage unit between the heat source and terminal equipment, the buffer tank helps reduce short cycling, maintain stable water temperature and improve the efficiency of systems using air source heat pumps, boilers and solar thermal solutions.

With flexible capacities, durable materials and multiple connection options, it provides an effective solution for residential, commercial and engineering HVAC projects.

Thermal Buffering for Optimized HVAC Performance

In heat pump and hydronic systems, frequent start and stop cycles may affect equipment efficiency and service life.

The buffer tank provides additional water capacity to absorb temperature fluctuations and balance the difference between heat production and heat demand.

System Benefits:

• Stabilizes heating and cooling operation

• Reduces unnecessary compressor cycling

• Improves heat source working conditions

• Helps maintain consistent supply temperature

• Extends the service life of HVAC equipment

Designed for Heat Pump & Hydronic Systems

The buffer tank is developed for integration into various water-based HVAC systems.

Compatible applications include:

Air Source Heat Pump Systems

Provides additional water volume to improve heat pump operation, especially in systems with variable heating loads.

Boiler Heating Systems

Supports smoother boiler operation by improving system circulation and thermal balance.

Solar Thermal Systems

Stores available thermal energy and improves the utilization of renewable heat sources.

Radiant Heating & Cooling Systems

Suitable for underfloor heating, fan coil units and other hydronic terminals.

Reliable Construction with Stainless Steel Options

To meet different project requirements, the inner tank is available in multiple material options:

• SUS304 Stainless Steel

• SUS316L Stainless Steel

• Duplex 2205 Stainless Steel

The corrosion-resistant structure ensures reliable operation in long-term HVAC applications.

Outer casing options include:

• Painted galvanized steel

• SUS304 stainless steel

High Performance Thermal Insulation

The tank features high-density HCFC-free foam insulation to minimize heat loss and improve energy retention.

Available insulation thickness:

• 45mm

• 50mm

Effective insulation helps maintain stored thermal energy and supports more efficient system operation.

Flexible Connection Design for Easy Integration

The buffer tank is designed for convenient connection with different HVAC layouts.

Standard configuration includes:

• Circulation inlet and outlet

• Air vent connection

• Temperature sensor port

• Drain connection

• Safety valve connection

Multiple connection sizes are available:

• G1"

• G5/4"

• G6/4"

• G2"

Maximum working pressure:

8 Bar

Multiple Capacity Options for Different Projects

The series provides flexible capacity selection to meet different system requirements.

Available capacities:

The wide capacity range allows engineers and installers to select the proper buffer volume according to system design.

Optional Electric Heater Configuration

For systems requiring additional heating support, an optional electric heater can be integrated.

Available options:

• 1.5kW electric heater

• 3kW electric heater

• 4kW electric heater

Optional thermostat control is also available for customized system configurations.