50mm Thick Flat Plate Collector

The 50 mm Ultra-Thin Solar Thermal Collector from Soletks Solar is built for projects where both performance and cost efficiency matter. Designed with input from engineers and project managers across multiple continents, this collector is a smart choice for commercial solar heating systems, residential hot water applications, and large-scale institutional projects.

By combining a reduced thickness with optimized thermal design, it delivers exceptional energy output while cutting transportation and installation costs — critical factors in markets like Africa, the Middle East, Europe, and Southeast Asia.

Cost Efficiency at Every Stage

Lower Freight Costs

Traditional 80 mm thick collectors limit container capacity to around 270 units in a 40HQ. The 50 mm ultra-thin design allows up to 400 units per container, reducing shipping costs by as much as 48%. For large-scale deployments, this translates into substantial savings on logistics.

Reduced Labor Requirements

Lighter and slimmer, this model requires only two installers, minimizing on-site labor costs and shortening project timelines. This is particularly beneficial for hotel solar water heating installations or school campus systems where quick deployment is essential.

Durable for Long-Term ROI

Built with aerospace-grade aluminum frames, 0.8 mm steel backing plates, and high-density polyurethane insulation, the panel ensures decades of reliable service. Its weather-resistant blue-selective coating maintains high efficiency even after years of exposure to harsh climates.

Engineering Excellence

· Thermal Performance: λ = 0.023 W/(m·K) insulation with 97% closed-cell structure

· Heat Transfer Efficiency: 360° bonded copper-to-aluminum contact area increases heat exchange efficiency by 15%

· Extreme Climate Endurance: Operates between –30°C and 120°C, passes 2,000 hot-cold shock cycles without failure

· Pressure Rating: 0.6 MPa working pressure for high-demand systems

Applications for Maximum Savings

· Hotels & Resorts: Reduce operational energy costs with high-efficiency solar hot water.

· Industrial Facilities: Pre-heat water for processing lines, lowering fuel or electricity consumption.

· Hospitals & Schools: Deliver continuous hot water while cutting utility bills.

· Multi-Unit Residential Projects: Offer sustainable heating to multiple apartments at lower per-unit cost.

Performance Advantages Over Traditional Collectors

Technical Specifications：

Project ROI Example

For a 1,000-unit hotel solar water heating project in the Middle East, switching from traditional collectors to Soletks Solar’s ultra-thin model can save up to 48% in shipping costs, cut installation labor by 33%, and improve thermal efficiency by 15%. These combined savings can reduce payback periods by more than a year.

Why Engineers Recommend It

· Simplifies transportation and logistics for large-scale projects

· Improves installation speed without compromising quality

· Offers proven thermal performance for cold and hot climates

· Backed by 10-year core component warranty and 25-year performance guarantee

Why Choose Soletks Solar：

· Global Reach: Exported to 68 countries with over 1.2 GW installed capacity.

· Strong Warranty: 10 years for core components + 25 years linear performance guarantee.

· Expert Support: 24/7 technical service hotline with multilingual assistance.

· Customization: Optional RAL color customization to match building façades with a ΔE color difference of less than 1.5.

Real-World Q&A

Q: Will such a thin collector lose heat too quickly in winter?
A: No. The high-density polyurethane insulation ensures heat loss coefficient ≤ 0.35 W/(m²·K), outperforming thicker traditional models. Even in –10°C, the system can deliver 45°C hot water.

Q: How much can I save on transportation?
A: For every 1,000 units, you can save up to 48% in freight costs due to the higher container load capacity.

Q: Can I choose a custom frame color?
A: Yes. In addition to the standard matte black, you can select any RAL color for perfect architectural integration.