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30 Engineering Header Collectors
UHS Leak-Proof Construction
Our unique welding and sealing method—double argon arc weld + press-fit ends—solves the leakage issues seen in traditional manifold systems. Rated up to 1.0 MPa and built to last over 15 years.All-Glass Vacuum Tubes
Each tube is thermally stable, shock-resistant, and treated with uniform selective coating for optimal heat absorption.Green Insulation, German Technology
CFC-free polyurethane foaming ensures consistent thermal preservation for better energy savings.No-Weld End Cap Design
Prevents corrosion, enhances sealing effect, and avoids long-term water leakage.
Looking for a solar collector that's easy to install, powerful in output, and engineered for longevity? The Direct-Insertion Manifold Collector is the ideal solution for solar water heating in commercial and industrial settings.
This model operates in a single-loop mode, where water is directly heated inside the collector and flows into a centralized storage tank. The result: simplified system structure, lower operational cost, and excellent heat transfer performance.
Where It Works Best：
· Commercial solar hot water systems
· Farming and aquaculture heating
· Industrial buildings and factories
· Public swimming pools
· Solar-assisted heating infrastructure
Why Choose This Collector?
UHS Leak-Proof Construction
Our unique welding and sealing method—double argon arc weld + press-fit ends—solves the leakage issues seen in traditional manifold systems. Rated up to 1.0 MPa and built to last over 15 years.
All-Glass Vacuum Tubes
Each tube is thermally stable, shock-resistant, and treated with uniform selective coating for optimal heat absorption.
Green Insulation, German Technology
CFC-free polyurethane foaming ensures consistent thermal preservation for better energy savings.
No-Weld End Cap Design
Prevents corrosion, enhances sealing effect, and avoids long-term water leakage.
This collector is a trusted choice for engineers, contractors, and developers seeking high-efficiency and worry-free solar heating solutions. Request a quote today to power your next project sustainably.
Product Parameter：
Type of collector | CTC390 | CTC500 | CTC780 | CTC1490 | |
outline dimension （mm） | 2180×1990×180 | 2580×1990×180 | 3760×2180×180 | 3760×4065×180 | |
Vacuum tube specifications | φ58×1800 | φ58×1800 | φ58×1800 | φ58×1800 | |
Number of vacuum tubes | 25 | 30 | 50 | 100 | |
Contour area (m2) | 3.91 | 5 | 7.81 | 14.91 | |
Lighting area (m2) | 2.47 | 2.96 | 4.93 | 9.86 | |
net weight （kg） | 67 | 81 | 123 | 230 | |
Working pressure (MPa) | ≤0.06MPa | ||||
Interface size | DN25 or DN50 external thread | ||||
Number of interfaces | Two | Three | |||
End cap of inner tank | UHS solder-free structure sealing process | ||||
Total heat loss coefficient | 2.4W/（m2·K） | ||||
Maximum operating temperature (℃) | 100 | 100 | 100 | 100 | |
Peak efficiency | 0.7 | 0.7 | 0.69 | 0.69 | |
rated efficiency ① | 0.59 | 0.59 | 0.57 | 0.57 | |
specified power （kW）② | 400W/m² | 0.4 | 0.5 | 0.8 | 1.5 |
700W/m² | 0.9 | 1.1 | 1.8 | 3.4 | |
1000W/m² | 1.4 | 1.7 | 2.8 | 5.3 | |
1. How does a vacuum tube solar water heater work?
A vacuum tube solar water heater uses solar energy to heat water through evacuated glass tubes. Each tube consists of two concentric glass layers with a vacuum in between to minimize heat loss. Sunlight is absorbed by the inner layer and converted into heat, which is transferred to the water inside the tank via a heat pipe or direct circulation, depending on the system type.
2. What applications are vacuum tube solar water heaters suitable for?
Vacuum tube solar water heaters are ideal for both residential and commercial use, including homes, hotels, schools, hospitals, and industrial facilities. They are especially effective in areas with moderate to cold climates. The systems can be used for domestic hot water, pre-heating for boilers, and even floor or space heating when combined with compatible systems.
3. Can a vacuum tube solar water heater work during winter or cloudy days?
Yes. Vacuum tubes retain heat exceptionally well, allowing the system to continue heating water even in low-temperature or overcast conditions. However, performance may be slightly reduced, so a backup electric or gas heater is recommended for consistent hot water supply during prolonged bad weather.
4. How long is the lifespan of a vacuum tube solar water heater?
With proper installation and maintenance, a vacuum tube solar water heater can last 15–20 years or more. The glass vacuum tubes are durable and resistant to corrosion, and the tank is usually made of stainless steel or enamel-coated steel for longevity.
5. Is installation difficult? Can the system be installed on any roof?
Installation is straightforward and can be completed in a few hours by a qualified technician. Most vacuum tube solar water heaters are designed for pitched roofs, but flat-roof mounting brackets are also available. It's important to ensure the roof can support the system’s weight and gets sufficient sunlight.
