Solar Thermal Coating

Product Description

Our Solar Absorber Coating is a state-of-the-art selective coating engineered to maximize the efficiency of solar thermal collectors. Designed for application on absorber plates in flat plate collectors and evacuated tubes, this coating delivers exceptional high solar absorptance while maintaining extremely low thermal emittance. It is the key component that transforms sunlight into usable heat with minimal energy loss, ensuring your solar water heating system achieves peak performance, durability, and a faster return on investment.

How It Works

This advanced solar selective coating operates on a fundamental principle of photothermal conversion:

1. Sunlight Absorption: The coating is applied to a metal absorber plate (typically copper or aluminum). Its specialized chemical composition allows it to absorb a very high percentage (≥95%) of incoming solar radiation across the visible and near-infrared spectrum.

2. Heat Conversion & Retention: The absorbed light energy is efficiently converted into heat. Crucially, the coating's microstructure is engineered to suppress the re-radiation of this infrared heat energy (thermal emittance ≤5%), a process known as low infrared emissivity.

3. Superior Heat Transfer: The trapped heat is conducted directly into the underlying metal absorber plate and transferred to the heat transfer fluid circulating through the attached tubes, maximizing the useful energy yield for your solar hot water system.

Technical Parameters:

Our Factory Advantages

As a specialized manufacturer of core solar thermal components, we provide unmatched value:

1. Proprietary Coating Formulation: We utilize advanced physical vapor deposition (PVD) and electroplating technologies to produce durable coatings like black chrome and blue titanium nitride, known for superior stability and performance.

2. Optimized for Efficiency: Our coatings are engineered for the perfect balance of high absorptivity and low emissivity, directly increasing the efficiency of solar collectors and the overall solar system performance.

3. Exceptional Durability: The coatings exhibit excellent weather resistance, corrosion resistance, and long-term thermal stability, withstanding high stagnation temperatures without significant degradation, ensuring a long service life.

4. OEM & Custom Solutions: We are a leading OEM supplier to major solar collector manufacturers, offering custom coating solutions tailored to specific substrate materials and performance requirements.

5. Rigorous QC & Testing: Every batch undergoes strict quality control, including spectrophotometer testing to certify solar absorption and thermal emission rates, ensuring consistent, high-grade performance.

Packaging and logistics:

Application Scenarios

This essential coating is integral to a wide range of solar energy applications:

1. Flat Plate Solar Collectors: The standard coating for high-performance solar thermal panels used in residential and commercial solar water heaters.

2. Evacuated Tube Collectors: Applied to the absorber strips inside vacuum tubes for high-temperature applications.

3. Solar Air Heaters: Used in collectors designed for space heating or industrial air heating processes.

4. Solar Pool Heating Systems: Enhances the efficiency of unglazed polymer or metal absorbers for pool heating.

5. Industrial Process Heat: Enables efficient medium-temperature heat generation for various industrial applications within the solar thermal industry.