China factory direct supply: 10 tubes-30 tubes self-produced glass vacuum tube heat pipe Solar collector (Solar Keymark certification)

I. Vacuum tube heat pipe Solar collector

In the global solar thermal utilization market, the collector is the core of the system, and its performance and reliability directly determine the success or failure of the entire hot water project. As a leading manufacturer of solar collectors in China, we are proud to introduce to global customers our self-produced glass vacuum tube heat pipe solar collectors with standard configurations of 10 tubes, 20 tubes and 30 tubes. This series of products not only embodies the technological achievements of our years of in-depth research in the Solar thermal field, but also, with its outstanding performance, modular flexibility and the crucial Solar Keymark certification, serves as your pass to enter the high-end markets in Europe and globally. It is the undisputed golden choice for engineers, wholesalers and system integrators.

1. Vertical integration, quality self-control: Full control from glass tubes to collectors

Unlike many of our competitors, we have achieved vertical integration production from the self-production of vacuum glass tubes to the assembly of collectors. This means: 

Cost advantage: By eliminating intermediate links, we offer you highly competitive factory prices in the market. 

Quality control: From the glass material, tube drawing process to coating technology, every step is under our strict supervision to ensure that each vacuum tube has consistent high performance and long service life. 

Stable supply: Our own glass tube production line ensures a stable supply of core raw materials, unaffected by external market fluctuations, and guarantees the timely delivery of your orders.

2. Obtain Solar Keymark certification - The golden key to the European market

The Solar Keymark is an authoritative certification issued by the European Committee for Standardization (CEN), serving as the "passport" for solar products to enter the EU market. Our collectors have passed this certification. We solemnly promise you: 

The performance data is genuine and reliable: The thermal performance parameters (such as η₀ and a₁ values) marked by the certification have been verified by an independent third-party testing institution and are genuine and reliable, providing a solid basis for your precise system engineering design. 

Compliant with European standards and regulations: The product fully complies with a series of standards such as EN 12975, meeting the strict requirements of the European Union for product safety, durability and environmental protection, helping you easily pass local project audits. 

Qualify for government subsidies: In many European countries, only products carrying the Solar Keymark certification can apply for government energy-saving subsidies, which greatly enhances the market appeal and competitiveness of your terminal products.

3. Modular design, flexible and wide application

We offer three standard models: 10-tube, 20-tube and 30-tube. This modular design endows you with unparalleled flexibility 

Ideal choice for small-scale projects and expansion: The 10-tube unit is highly suitable for family villas, small homestays, or as a supplementary expansion unit for large-scale projects. 

The main force of medium-sized projects: 20-pipe and 30-pipe units are the main configurations for hot water projects in hotels, schools, farms, and small commercial and industrial enterprises. They can be easily connected in parallel with multiple units to meet greater hot water demands. 

Easy installation: Standardized dimensions and interfaces make installation, wiring and connection work simple and efficient, significantly reducing installation costs and time.

Ii. Technical Depth: The outstanding performance of heat pipe vacuum tube technology

This series of collectors adopts the most reliable and efficient heat pipe vacuum tube technology currently available on the market. Its working principle and advantages are as follows: 

High-efficiency heat transfer and unidirectional heat conduction: Each vacuum tube contains an independent metal heat pipe filled with a special working medium. The working medium absorbs solar energy at the bottom of the vacuum tube and vaporizes instantly. The steam rises to the condensation end at the top, transferring heat to the circulating working medium (or water flow) in the system. Subsequently, it condenses and liquefies, flowing back to the bottom, and this cycle repeats. This process is like a "thermal diode", where heat can only be transferred from the heat collection end to the water usage end, effectively preventing reverse heat loss at night or in low-temperature environments. 

Super anti-freezing, no worries in severe cold: The working medium inside the heat pipe has an extremely low freezing point (down to below -50℃), fundamentally eliminating the risk of pipe rupture caused by freezing. This feature makes it perform particularly well in cold regions such as Northern Europe and Central Europe, and it is an ideal anti-freezing solution to replace traditional direct flow channel vacuum tubes.

Stable operation and easy maintenance 

Dry connection: The heat pipe and the heat collection header adopt a "dry" connection. Even if a single vacuum tube is accidentally damaged, it only needs to be pulled out and replaced. The system working medium inside the collector will not leak, and the entire system can still continue to operate, greatly enhancing the reliability of the project and reducing maintenance costs. 

Less prone to scaling: Heat is transferred through condensation, and the water in the heat collection circuit and vacuum tubes is separated, effectively avoiding scaling problems inside the collector.

Iii. The Cornerstone of Outstanding Quality: Analysis of Manufacturing Processes and Materials

Self-produced high borosilicate 3.3 glass vacuum tubes 

It adopts high borosilicate 3.3 glass of the same grade as laboratory glassware, with a low coefficient of thermal expansion and excellent resistance to high temperatures and sudden temperature changes. 

The high vacuum degree ensures the long-term stability of the vacuum degree. The interlayer is filled with highly efficient getter to continuously maintain the vacuum degree and guarantee the insulation effect for ten years. 

Magnetron sputtering selective absorption coatings have an absorption rate of over 95% and an emissivity of less than 6%, maximizing the capture of light energy and suppressing thermal radiation loss.

High-efficiency copper heat pipes and precision combined boxes 

The heat pipe is made of high-purity copper, featuring high heat transfer efficiency and long service life. 

The heat collection header is made of thickened aluminum alloy or stainless steel, with a corrosion-resistant appearance and a sturdy structure. The internal insulation layer is filled with high-density polyurethane foam, effectively reducing heat loss. 

The connection design between the header box and the bracket is reasonable, with strong wind resistance. The installation Angle is adjustable to adapt to the optimal inclination Angle in different latitude regions.

Iv. Target Customers and Market Applications

Solar water heating project providers and system integrators: We offer you reliable and fully certified core components, which are the solid foundation for you to build high-quality water heating projects. 

Wholesalers and distributors in Europe and other international markets: Solar Keymark certification ensures your purchasing is worry-free, and the modular product line meets the diverse needs of your different customers. 

OEM/ODM partners: We welcome bulk purchases and private label cooperation. We can customize in terms of appearance, interface and performance according to your specification requirements. 

Large-scale project contractors: Applicable to various commercial and public utility projects such as schools, hotels, hospitals, swimming pools, agricultural drying and industrial preheating.

V. Advantages of Our Cooperation

Factory direct supply, ultimate price: No middlemen. We trade directly with you at the most attractive FOB or CIF prices. 

Technical support and solution sharing: We can provide detailed technical parameters, installation manuals, and typical engineering application solutions to assist you in market expansion and project design. 

Stable production capacity and on-time delivery: With modern production lines and a mature supply chain, we can ensure the stable production and on-time delivery of large orders. 

Professional packaging and logistics guarantee: The products are packaged in sturdy materials suitable for both sea and land transportation to ensure the safe arrival of your goods at your destination port.

Vi. Frequently Asked Questions

Question: What are the differences between the Solar Keymark certification and the ordinary CE certification? 

Answer: CE certification is the basic safety access requirement for products to enter the European market. Solar Keymark is a voluntary performance certification. Its testing standards are stricter, especially focusing on the quantitative assessment of thermal performance and durability. It is the key to proving the high quality of products and obtaining subsidies, and its value is much higher than that of CE certification.

Question: What are the heat collection areas of 10-tube, 20-tube and 30-tube collectors respectively? 

Answer: The heat collection area may vary slightly depending on the size of the vacuum tube. Generally, a vacuum tube of Φ58mm x 1800mm corresponds to a heat collection area of approximately 0.12 square meters. Based on this calculation, 10 pipes are approximately 1.2 square meters, 20 pipes are about 2.4 square meters, and 30 pipes are approximately 3.6 square meters. For specific parameters, please request our product data sheet, which contains precise data based on Solar Keymark certification.

Question: How long is the service life of a heat pipe? Is it necessary to replace? 

Answer: Under normal usage conditions, the design life of high-quality copper heat pipes can reach over 15 years. Its performance degradation is extremely slow and usually does not require replacement. Only when physical damage causes no heat, does a single heat pipe need to be replaced separately, and the operation is very simple.

Conclusion: Your reliable bridge to the high-quality solar market

We are well aware that in the fierce international competition, only by taking excellent quality, authoritative certification, flexible choices and competitive prices as the core can we win the long-term trust of our customers. Our 10/20/30 tube heat pipe vacuum tube collector series is the perfect embodiment of this concept. 

If you are looking for a high-performance, fully certified and stable supply solar thermal core component for your project or business, please contact us immediately. Our sales and technical teams will provide you with detailed product catalogues, Solar Keymark certificates and the most competitive quotations at the first time.