Detailed Product Description

Our Underfloor heating Solar Collector's Conception:
Evacuated tubes convert solar energy into thermal energy that is transferred to heat pipes by an aluminum fin with high solar energy absorption and low heat radiance loss. The heat pipe adopts such kind of character that could transmit quantity of heat under low temperature.

Features:
1.With a testing pressure of 1.0 MPa, this system has a working pressure of 0.6 MPa.
2.Solar water heaters can still work even with several tubes broken.
3.Highly efficient insulation with integrated polyurethane foam and rock wool.

Technical data:
Number of Tubes 10, 15, 20, 22, 25, 30
Outer Tube size: 58 mm x 1800mm
Inner Tube size:  47 mm x 1800mm.
Glass Tube Thickness 1.6 mm
Tube Thermal Expansion 3.3 X 10 -6 ^oC
Tube Material : Borosilicate Glass 3.3
Absorptive Coating : Graded AI-N/AI
Absorptance > 90% (AM 1.5) .
Emittance ≤7 % (100^oC )
Vacuum P < 0.005 Pa
Stagnation Temperature < 220 ^oC
Heat Loss < 0.8 W/m2^oC. )
Reflector: Ginning Alumnium reflector plate .
The out cover of the solar connector Zinc coated steel sputtering manifold.
Frame : Zinc coated steel corner sputtering frame .
Insulation: Polyurethane or Rock Wool.
Tested pressure: 1.0MPa
Working pressure: 0.6MPa
Daily efficiency >50%.