China pressurized vacuum tube solar collector and solar water heater system

                                             War  Tank                                                                               

Material of outer tank:

Galvanized steel

Material of inner tank:

Food grade stainless steel 304-2B

Tank insulating layer:

50 mm thickness with high density polyurethane foam

Welding:

Argon arc welding

Tank structure:

Inlet, Outlet, Drainage & Air Vent or Customized

                                                              Vacuum  Tube                                                                               

Tube structure:

All-glass double deck co-axial structure

Glass material:

High borosilicate 3.3 glass

Outer tube diameter and glass thickness:

Ø 58± 0.7mm; Glass thickness 1.6 ± 0.15mm

Inner tube diameter and glass thickness:

Ø 47± 0.7mm; Glass thickness 1.6 ± 0.15mm

Tube size:

58*1800mm

Absorptive coating property:

Structure

Cu / SS-ALN(H) / SS-ALN (L) / ALN

Sediment method

Three targets magnetron sputtering plating

Specific absorption

0.93-0.96(AM1.5)

Emission ratio

0.04-0.06(800C± 50C)

Solar irradiation for obtaining
 a preset water temperature:

Φ =58 H≤ 4.7MJ/m²

H=3.7-4.2MJ/m²

Vacuum tightness:

5.0× 10 -3  Pa

Idle sunning property parameters:

260-300 m² . C/KW

Average heat loss coefficient:

ULT=0.4~0.6W/(M 2.0 C)

Resistant Hail:

≤ 25mm

Life span:

15 years

                                                                 Bracket                                                                                       

Bracket material:

Pre-Coated Galvanized Steel

Bracket angle:

22, 45, 52 degree optional

Fastening pieces:

Stainless Steel Nut Bolt

Thickness

1.5mm