Solar collector

Material of Manifold: 1.9mm aluminium alloy with plastic spraying
Material of Support: 1.9mm aluminium alloy with plastic spraying
Material of Heater Pipe: copper
Heat Preservation Layer: 35mm rock wool
Rubber Piece: high temperature ageing resistance silica gel
Best Mounting Angle: radial 30-70?and lateral 0?
Max working pressure: 8 bar
Pressure Resistance: 20-tube header chamber 700Pa 3.3 liter/min.
Best Flux: 0.1 liter /min/tube 0.026 gallon/min/tube
Performance: transferring rate: ho=0.717; heat loss coefficient: al=1.52,a=0.0085
Efficiency47: 45w per tube; 58:75w per tube

It is pressurized solar system
There is no leak problem
It can be for huge project by parallel or serial connection.