20 vacuum tube solar collectors with Big-Pipe head, i.e. extra thick Heat Pipe head, 20 vacuum tubes with a 6-year warranty!

20-tube Big-Pipe system solar collector

Total solar collector surface: 3.12 m2
Collector useful surface: 2 m2< /span>
Collector width: 1600 mm
Connecting pipes: 2x22 mm copper
Space volume: 5.07 l

Vacuum tube diameter: 58 mm
Vacuum tube length: 1800 mm< br />Vacuum tube wall thickness: 1.6 mm
Absorber coating: SS-AL-Nx/Cu three target selective absorption coating
Vacuum tube wall thickness: 1.6 mm
Stagnation temperature: 250 C
Big-Pipe (Heat-Pipe) head diameter: 24 mm extra thick
Big-Pipe (Heat-Pipe) head length: 70 mm< /p>

Note:
The head of the so-called Big-Pipe insert has a larger heat transfer surface, ( the diameter is 24 mm instead of 14 mm) so their efficiency is slightly better, but they are more expensive. They are the same in value for money.

The product does not include the connecting pipes, the roof hook and the antifreeze liquid, for solar health reasons we recommend the non-toxic solar antifreeze, you can find it among our products.< /span>
Usually 10-15 liters of concentrate is sufficient.

Operating pressure: 6 bar
Maximum pressure: 10 bar< /p>

Solar collector packaging size:

Head unit: 1 pc 170x16x17 cm 10 kg

Vacuum tubes: 2 pcs 193x27x24 cm 30 kg

More information:

Modern, 20-pipe Big-Pipe system solar collector

With a blue vacuum tube!
Solar Keymark certification
New technology, increased heat transfer surface.
About 240 liters recommended for storage.
For larger storage, we recommend several pieces or several tubular solar collectors.
Reliability, operational safety and longevity are guaranteed by high-quality, corrosion-resistant materials: among others, borosilicate glass, which has excellent heat resistance and a high degree of chemical resistance has),
copper is aluminum and stainless steel.

The vacuum pipes are connected dry, so there is no direct contact between the heat carrier medium and the glycol-water mixture.
Using it, possible replacement of pipes is possible even with a charged system.

The product is delivered disassembled in a cardboard box.
Easy installation and maintenance

The product does not include connecting pipes, roof hook and antifreeze. For health reasons, we do not recommend the toxic antifreeze, but the solar antifreeze found in our products.
Usually 10-15 liters of concentrate is sufficient.