Selective Solar Absorber Coating

I. Product Introduction

Blue Solar Coating (Solar Blue Film), also known as Super Blue Film, is a selective solar absorption coating that belongs to the new generation of solar thermal utilization technology. This coating is deposited on the metal substrate surface through physical vapor deposition (PVD) technology using vacuum magnetron sputtering method, and is used to efficiently collect solar energy. The Blue film gets its name because of its blue color, and it is also called "Blue Titanium" in the industry.

This product has an extremely high solar absorption rate in the main energy range of solar radiation (approximately 0.25 - 2.5 μm), and has an extremely low thermal emissivity in the infrared band (> 2.5 μm), which can maximize the conversion of solar energy into heat and significantly reduce heat radiation loss. With this excellent spectral selectivity, Blue Solar Coating has become the mainstream absorber material for high-end flat solar collectors in Europe and America. The types of membrane layers in foreign products are mainly magnetron sputtered blue film cores, accounting for more than 90%.

Our company's Blue Solar Coating uses an advanced roll-to-roll vacuum magnetron sputtering production line to achieve large-scale, high-efficiency, and continuous production. The coating is based on an aluminum substrate with a thickness of only 0.4 mm, and the surface coating thickness is only at the level of 150 nm (nm), but it meticulously constructs a multi-layer membrane system structure including bonding layer, blocking layer, and infrared reflection layer, etc. The optimized high-performance Blue film has a solar absorption rate (α) of over 95% and a thermal emissivity (ε) of less than 5%, and it has good thermal stability, with a service life of up to 25 years.

II. Product Parameters

Parameter Item Technical Indicators

Product Name High Selective Solar Absorber – Blue Solar Coating

III. Product Advantages

1. High Absorption, Low Emission, Excellent Photothermal Conversion Efficiency

The solar absorption rate of Blue Solar Coating is over 95%, and the thermal emissivity is less than 5%. In solar collector applications, it has an extremely high photothermal conversion efficiency. Under the same operating conditions, the thermal performance of the Blue film collector can reach 75.5%, significantly better than traditional coatings such as black chrome (73.4%) and anodized (69.3%).

2. Excellent Spectral Selectivity

As a solar spectral selective absorption coating, the Blue film has high absorption characteristics in the main energy range of solar radiation (ultraviolet light, visible light, infrared light), and maintains a low emissivity in the infrared band, achieving the ideal spectral selectivity of "high absorption, low emission".

3. Outstanding Weather Resistance and Long Service Life

The Blue film coating has excellent high-temperature performance, corrosion resistance, and anti-aging properties. After being tested by authoritative testing institutions, the product performs well in the salt spray test and has an expected service life of up to 25 years. Even after 25 years of use, the coating absorber can still maintain 95% of its initial performance.

4. Environmental-friendly production process

It is prepared by vacuum magnetron sputtering technology, with a clean and environmentally friendly production process. It can be fully automated and has no pollution emissions.

5. Adaptability to various substrates

The product can be coated on various metal substrates such as copper strips, aluminum plates, and copper plates. Strip-type or whole plate-type can be customized to meet different application requirements.

IV. Factory advantages - Dual-line production capacity for blue and black films

As a professional manufacturer in the field of highly selective solar absorption coatings, our company has the industry-leading fully automatic magnetron sputtering high-weather-resistant selective absorption coating production line. We are one of the few enterprises in the world that simultaneously master the core production technologies of blue films and black films, and have dual-line production capacity - we can produce high-selectivity solar blue films and high-selectivity solar black films.

1. Blue film production line: Using advanced roll-to-roll vacuum magnetron sputtering technology, it realizes large-scale, high-efficiency, and continuous coating production. The absorption rate of blue film products is ≥ 95%, and the emission rate is ≤ 5%, suitable for the high-end flat plate solar collector market.

2. Black film production line: The second-generation black film technology independently developed, while ensuring excellent optical performance, reduces manufacturing costs by 30%. The absorption rate of black film products is ≥ 92%, suitable for cost-sensitive large-scale application scenarios.

3. Full-chain layout: From equipment research and development to film layer production, our company has complete independent intellectual property rights and core technologies.

4. Production capacity: It ranks among the top globally, with stable large-scale supply capabilities.

Whether it is the high-performance blue film or the cost-sensitive black film, we can provide customers with the optimal high-selectivity solar absorption coating solutions.

Packaging and logistics:

V. Application fields

Blue Solar Coating, as the core material of solar thermal conversion collectors, is widely used in the following fields:

1. Flat solar collectors - solar hot water systems

Blue film is the mainstream absorber material for high-end flat-type solar collectors, widely used in household and commercial solar hot water supply systems.

2. Solar heating systems

Suitable for building-integrated solar heating, effectively reducing building energy consumption.

3. Solar thermal power generation

Suitable for low-temperature solar thermal power generation systems' heat collection components.

4. Desalination of seawater

Used as the core material for solar thermal conversion systems, applied in solar seawater desalination systems.

5. Dual-source heat pump systems

Suitable for solar and air-source dual-source heat pump systems, achieving multi-energy complementarity.

6. Industrial heat and building energy conservation

Widely used in industrial process heat and building energy conservation and other clean energy fields.

VI. Why choose us?

✅ One of the few enterprises in the world that simultaneously master the core production technologies of blue films and black films

✅ Fully automatic magnetron sputtering production line, stable quality, sufficient production capacity

✅ Absorption rate of blue film ≥ 95%, emission rate ≤ 5% - industry-leading level

✅ Cost reduction by 30% for black films - balancing performance and cost

✅ 25-year service life - certified by authoritative institutions

✅ Customizable production support - substrate material, thickness, width can be customized as needed

✅ Complete independent intellectual property rights from equipment to process - fully controllable from equipment to process

Contact us immediately to obtain product quotations and technical solutions!

Whether you need high-selectivity solar blue film or high-selectivity solar black film, whether you are a flat collector manufacturer, solar hot water engineering provider, or a new energy project developer, we are willing to provide professional product consultation and technical support.

Send an inquiry to obtain a personalized solution!