1.Material of out tankļ¼Anti-corrosion 0.35-0.4mm thickness Galvanized steel. Φ360mm
2.Material of inner tank: Food grade 0.4-0.5mm thickness SUS304/316 stainless steel.
Φ460mm/470mm
3.Tank insulation layer 50mm~ 55mm 45kg/m³ high-density polyurethane foamed
4.Bracket: 1.5mm thickness Galvanized Steel
5. Heat Exchange Copper coils inside:Length: 200L—30m;250L—32m;300L-35m
6.Tank Structure: 5 holes including air vent,water inlet and outlet,electric heater,magnesium Rod
7.Solar collector tube: Three Target 3.3 Borosilicate glass with N/Al coating ,1.6mm thickness
8.Inlet and outlet hole Male G 1/2, 3/4
9.Max pressure 0.05 Mpa
10.Vacuum tube tightness P≤0.005 Pa
11.Absorption as=0.93-0.96(AM1.5)
12.Emission ratio εh=0.04-0.06(80C±5C)
13.Idle sunning property parameters Y=220~260m2.C/KW
14.Average heat loss coefficient ULT=0.6~0.7W/(m2.C)
15.Welding: Argon arc welding
16.Fastening pieces: Made of stainless steel screw