Flat Plate Solar Collector With High Efficiency

The High-Performance Flat Plate Solar Collector is a next-generation solar thermal solution designed to deliver exceptional efficiency, durability, and adaptability for engineering projects of all scales. With advanced absorber coatings, optimized flow channel architecture, and intelligent structural design, this collector achieves outstanding thermal performance while ensuring cost-effective and reliable operation over decades. It is an ideal choice for system integrators, EPC contractors, and project developers seeking robust solutions for residential communities, hotels, hospitals, industrial facilities, and district energy systems.

Unmatched Thermal Efficiency

At the heart of the collector lies a highly selective blue film coating produced with advanced PVD technology. With a solar absorption rate of 95% ±2% and an emissivity of just 5% at 80°C, the collector captures maximum solar radiation while minimizing thermal losses. This allows system operators to reach higher outlet temperatures and achieve greater system efficiency compared with conventional collectors.

Innovative Flow Channel & Modular Design

A unique grid-shaped flow channel layout ensures uniform fluid distribution, significantly improving heat exchange rates. The modular architecture supports both series and parallel connections, allowing easy adaptation to different system designs and water tank capacities. Whether a project requires 10 collectors or 1,000, the system can be flexibly expanded without compromising efficiency.

Superior Insulation & Heat Retention

The collector incorporates a high-density polyurethane foam layer (35 kg/m³, closed-cell ≥95%), manufactured through one-time high-pressure foaming. This provides long-lasting insulation and prevents heat loss even in harsh climates. The insulation design reduces standby losses, ensuring maximum energy utilization.

Durability in Extreme Conditions

· Glass: Ultra-clear, low-iron tempered solar glass with 94% light transmittance and dual-side anti-reflective coating, resistant to hail impact and thermal stress.

· Frame: Aerospace-grade aluminum alloy (S11, 6063-T5) with tensile strength ≥160 MPa, offering both lightweight installation and excellent structural stability.

· Weather Resistance: Designed to withstand -30°C to +180°C operation, tested against 2400 Pa wind load and certified to resist typhoon-level conditions.

Multi-Scenario Engineering Applications

· Residential Buildings & Housing Complexes – centralized hot water and space heating.

· Hotels & Hospitals – continuous large-scale hot water demand with strict reliability requirements.

· Industrial Preheating – process heating, boiler feedwater preheating, or low-temperature manufacturing.

· Agricultural Drying – cost-effective drying of crops, fruits, vegetables, and herbs.

· Swimming Pools – maintaining stable water temperatures in commercial or community pools.

Proven Global Performance

As part of Soletks Solar’s global product line, this collector has been exported to over 65 countries, including Germany, Israel, Switzerland, and the United States. With a compound annual growth rate of 88% over the past decade, the collector is widely recognized for its reliability, long service life (≥25 years), and superior technical specifications.

This combination of performance, durability, and scalability makes the High-Performance Flat Plate Solar Collector the preferred choice for engineering projects worldwide.

Technical specifications list

Frequently Asked Questions (FAQ)

Q1: Will it be frozen and damaged in winter?
A: It will not burst when exposed to the sun at -30℃. It can be used with antifreeze or reflux emptying.
Q2: What if a typhoon comes?
A: The whole unit has passed the 2400Pa mechanical load test, can resist level 12 typhoons, and the brackets can be fixed with expansion bolts.
Q3: What is the glass self-explosion rate?
A: Homogenized tempered glass is used, with a self-explosion rate of <0.1%, and free replacement within the warranty period.
Q4: Is the glass resistant to hailstones?
The collector is equipped with 3.2mm ultra-white tempered low-iron glass, which has passed the hail test with 25mm diameter ice balls and 23m/s impact speed in accordance with IEC61215 and GB/T9535 standards, and the glass is not damaged. It can resist common hail impacts in extreme weather conditions, ensuring the safe operation of the system.