U-Tube Solar Collector

The U-Tube Evacuated Tube Solar Collector is designed for pressurized solar thermal systems where reliable heat transfer and long-term operating stability are important. Its U-shaped metal flow channel forms a separate heat-transfer circuit, allowing solar energy to be collected through the evacuated tubes without direct domestic water circulation inside the tubes.

This configuration makes the collector suitable for centralized hot water, building heating and other commercial solar thermal applications.

U-Tube Heat Transfer Structure

The collector uses an U-shaped metal flow channel to circulate the heat-transfer medium. Solar energy collected by the evacuated tubes is transferred through the aluminum fins to the U-tube and then carried to the solar thermal system.

Because the heat-transfer circuit is separated from the domestic water system, the evacuated tubes are not directly exposed to circulating water. This helps reduce the effects of freezing, scaling and water-quality issues during long-term operation.

Efficient Solar Heat Collection

The evacuated tube structure provides an effective environment for collecting solar thermal energy. 3003 aluminum fins transfer absorbed heat efficiently toward the copper flow channel, while the U-tube circulation design maintains a stable heat-transfer path.

Silver-copper welding is used for the flow-channel connections to provide strong and durable joints for continuous operation.

Suitable for Cold-Climate Applications

The separated heat-transfer circuit makes the collector particularly suitable for applications where low outdoor temperatures are a concern.

A climate-adaptive heat-transfer medium can be selected according to the local ambient temperature and system operating conditions. This provides greater flexibility when configuring solar thermal systems for different climates.

Reduced Maintenance Requirements

Since domestic water does not directly circulate through the evacuated tubes, the collector can reduce the influence of water quality on the heat collection components.

The separated circuit helps limit problems associated with scaling and leakage inside the vacuum tube system, making the collector suitable for installations where long-term reliability and reduced maintenance are priorities.

Flexible Solar Thermal Integration

The modular collector structure can be adapted to different solar array layouts and project requirements. Dimensions and configurations can be customized according to installation conditions and system design.

The brushed silver appearance also provides a clean finish for integration with different building environments.

Key Components

1. 3003 Aluminum Fins – Efficient heat transfer with good corrosion resistance

2. Copper U-Tube Flow Channel – Stable thermal transfer and corrosion resistance

3. Silver-Copper Welding – Durable connection technology

4. Evacuated Tubes – Efficient solar heat collection

5. Climate-Adaptive Heat Transfer Medium – Selected according to operating conditions

Product Highlights

U-Tube Heat Transfer · Pressurized System · Evacuated Tube Technology · Freeze Resistance · Low Maintenance · Customizable Configuration

The U-Tube Evacuated Tube Solar Collector provides a durable solution for solar thermal system integrators, engineering contractors and project developers requiring stable heat collection for commercial hot water and heating applications.