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E-mail: solarwayenergy@yeah.net
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Website: www.solarwaygroup.cn
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Inner Light-focusing U Pipe Solar Collector
Product Description
The Solarway inner focusing U pipe solar collector includes a header, vacuum tubes,U pipes,mouting frames and a tube bottom rack.It is most often used to collect heat foe space heating for domestic hot water.The collector can be installed indicidually or connected toa piping system
Working Principle: The sunlight shines on the outer wall of the vacuum tube as well as the built in mirror to reflect back onto the outer wall of the vacuum tube. Sunlight is then absorbed by the all glass vacuum tube and converted into heat energy which is then transferred to the U pipe via fan in order to heat the heat transmission medium inside the U pipe. The heat energy is then conveyed to the water in the water tank
Core Advantages:
- Selective absorption coating with solar absorptance ≥0.956 and thermal emittance ≤0.049; minimal performance decay (≤2.1% after 2000 hours of aging).
- Aluminum 3003 fin with high thermal conductivity ensures rapid heat transfer from the evacuated tube to the U-pipe.
- Delivers 68%–73% instantaneous efficiency under standard test conditions, outperforming traditional flat-plate collectors by 5–8 percentage points.
- Dry-tube design: No water inside the evacuated tubes—eliminates freezing risks in low temperatures and scaling issues that reduce efficiency over time.
- Compatible with antifreeze heat transfer fluids for stable operation in cold climates.
- Rigid welded copper connections (no silicone gaskets) prevent leaks and aging-related failures, ensuring a 10-year+ service life.
- Independent U-pipe circuits: The system continues operating even if one evacuated tube is damaged, reducing downtime for maintenance.
- Pressurized operation (up to 6 bar) for stable water pressure and consistent hot water supply.
- Modular design allows flexible parallel/series connection to scale for projects of any size.
- 0–90° installation flexibility: Suitable for roof mounting, ground mounting, and balcony wall mounting (vertical/horizontal).
- Lightweight aluminum alloy frame with corrosion resistance for outdoor use in harsh environments.
- Pre-assembled manifolds reduce on-site installation time and errors.
Features:
1. The inner light focusing U pipe solar collector uses a vacuum tube with a built-in reflector technology and heat transfer method through the U pipes to reduce heat loss and ensure a higher collecting temperature.
2. There is no water in the vacuum tubes, therefore there is no contamination of the pipes and the pipes will not break. U pipe heating technology is used, ensuring the temperature rises quickly. This system is reliable and efficient.
3.There are no restrictions on the installation height. Operation is pressurized, and a large flow make your bathing experience pleasant and comfortable.
4. The optimal design of the collector makes it less visually obvious, and makes it more compatible with existing architectural designs.
Specification | |
Product name | Inner light focusing glass U pipe solar collector |
Pipe Material | Glass ,Copper |
Place of origin | Shandong,China |
Brand name | Solarway |
Model number | SLWJUS16-84/47 |
Coating | Three targets Al-ss-cu |
Vacuum tube dimension | Diameter 84mm*Length 2100mm*16pcs |
Cross area | 3.77㎡ |
Aperture area | 2.57㎡ |
Dimension | 1764*2225*178mm |
Weight | 91KGS |
Effective absorb area | 4.73㎡ |
Aperture area effciency | 77.9% |
Aperture area performance | 1950.63W |
Instantaneous efficiency curve based on aperture area Aa and inlet temperature ti( linear fit)
1. Instantaneous Efficiency
The instantaneous efficiency equation of collector na=0.736-1.659Ti*
Ti*=(ti-ta)/G
ti :Working fluid inlet temperature,℃
ta: Ambient temperature,℃
G :Gross daily irradiance on solar collector aperture area W/㎡
The relation curve of pressure drop between two ends △ p and mass flow m
1.Pressure diop between two ends
2.Media flow
Product Structure and Working Schematic Diagram |
Project Case |
Product Production Line |
Inquiry
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