High Efficiency Integrated Large Flat Plate Collector

The EFPC high-efficiency integrated large flat plate collector is designed with a distinctive oversized flat plate structure, which significantly expands the heat collection surface while achieving a high level of system integration. This approach not only improves overall performance but also simplifies installation and long-term maintenance. With advanced solar thermal conversion technology, the EFPC collector delivers rapid energy transformation, stable output, and long service life, meeting the heating needs of multiple sectors.

Applications

1. Solar Heating for Buildings
The EFPC collector is an ideal solution for residential buildings, office complexes, schools, hotels, and other facilities requiring reliable space heating. In regions with long and cold winters, it maintains high efficiency even in low-temperature conditions. By integrating with heating systems, the unit supplies heat to radiators and underfloor pipelines, ensuring uniform indoor temperatures. When combined with storage tanks, surplus daytime energy can be stored and released at night, preventing waste and securing 24-hour heating. This not only enhances living comfort but also replaces conventional coal or gas systems, reducing emissions and improving local air quality.

2. Industrial Process Heat
Many industries—such as textiles, food processing, chemicals, and machinery—require large volumes of stable thermal energy. The EFPC collector, with its extended surface area and high conversion efficiency, provides rapid and stable heat for continuous industrial operations. Whether for textile dyeing or food sterilization, the system ensres reliable temperature output. Compared to traditional fossil fuel boilers, it significantly lowers operational costs and reduces waste gas and solid emissions, enabling companies to transition toward cleaner, more sustainable production.

3. Agricultural and Livestock Heating
Temperature control is critical in livestock farming, especially for young animals such as piglets and chicks. The EFPC collector can be configured according to the size of barns and the specific heating requirements, delivering steady and controllable thermal output. Its stable performance minimizes temperature fluctuations, lowering the risk of disease caused by sudden changes in the environment. In addition, since it does not rely on fuel combustion, the system maintains clean air inside facilities, promoting both ecological farming practices and higher survival rates.

Product Advantages

1. High Thermal Efficiency
The EFPC collector combines an oversized flat plate with optimized heat transfer technology. The effective absorption area is increased by more than 30% compared with conventional curved or small flat-plate collectors. Optimized fluid dynamics within the system ensure faster heat transfer with reduced resistance. Tests conducted by accredited institutions show peak instantaneous thermal efficiency above 85%, well beyond industry averages.

2. Integrated Design for Easy Installation and Maintenance
Unlike conventional collectors that require on-site assembly, the EFPC model is delivered with pre-assembled absorber plates, flow channels, insulation, and control modules. Installation is reduced by over 80%, requiring only simple mechanical fixing and connection, which lowers labor costs and project timelines. For maintenance, the integrated design allows for rapid fault detection and simplified servicing, minimizing downtime and operational expenses.

3. Reliability and Durability
Constructed with high-strength aluminum alloy framing and tempered glass, the EFPC collector has been tested against strong winds, hail impact, and corrosive environments. The structural design supports wind speeds up to 45 m/s (14 on the Beaufort scale) and withstands system pressure up to 16 Bar. Its wide temperature range operation—enabled by anti-freeze media and advanced insulation—ensures stable performance from -30°C upwards, with efficiency maintained at no less than 80% of normal conditions.

Core Technologies

Advanced Coating – Blue Film Absorber
The EFPC collector uses multilayer sputtering “blue film” coatings with solar absorption rates exceeding 95% and infrared emission below 5%. This results in a thermal efficiency rating of 0.813, surpassing both Chinese national standards (0.75) and most international benchmarks. As one of the few manufacturers capable of producing both “blue” and “black” coatings in-house, Soletks ensures complete quality control and customizes coatings to suit diverse regional climates and solar conditions.

Optimized Flow Channel with Finite Element Analysis
The internal heat transfer channels are designed using finite element modeling, simulating fluid flow and heat transfer under varied working conditions. This ensures stability even under extreme temperature differentials—day-to-night changes exceeding 40°C—without deformation or loss of efficiency.

Innovative “Thermal Cabin” Insulation
The EFPC collector adopts a multi-layer “thermal cabin” insulation design, reducing heat loss coefficients to as low as 2.2, compared with the industry average of 3.5. Even at -40°C, the insulation ensures minimal energy loss, enabling consistent and efficient operation in severe cold climates.

Strengths of Soletks Solar

1. Mass Production Capacity: Six advanced production bases, with automated lines capable of delivering a unit every 55 seconds and annual capacity reaching 7.0 GWth, ranking second worldwide.

2. Full Supply Chain Control: In-house coating, absorber manufacturing, system assembly, and project execution ensure reliable quality throughout the value chain.

3. R&D Leadership: With 16% of staff dedicated to R&D—half of them with over 20 years of industry experience—Soletks operates a 7-1-1-1-1 research platform including institutes, labs, and an academician station, backed by 117 patented technologies.

4. International Certifications: Solar Keymark, CE, RoHS, China Energy Conservation, Environmental Product Certification, and CCC approvals.

5. Proven Track Record: By 2025, EFPC large flat plate systems had been deployed in projects covering 1.18 million square meters of heating area.

 Product Parameter 

Customer Q&A

Q1: Is maintenance complicated?
A: No. Routine maintenance involves 1–2 simple cleanings per quarter to remove dust and debris. The blue film absorbers and EVS flow channels are built with weather-resistant materials, providing a service life of over 25 years without replacement.

Q2: Can the EFPC collector integrate with existing heating or hot water systems?
A: Yes. It is fully compatible with common systems such as gas boilers, heat pumps, and municipal heating networks. It can be connected in series or parallel without requiring replacement of tanks or pumps, making system upgrades straightforward and cost-efficient.