Solar water heater

------------------------------------------------------------------------------------

Inner tank:

Food grade SUS304/2B stainless steel with optional 0.31mm, 0.35mm, 0.40mm, and 0.50mm thick.

Outer tank:

Aluminum zinc painted steel (silver, white), strong and anticorrosion effectively welded by argon arc. Or SUS304-2B stainless steel with optional 0.31mm, 0.35mm, 0.40mm and 0.50mm thick.

Capacity: 90/108/120/135/144/162/180/216/270/288/306/324L.

Vacuum tube:

3.3 high borosilicate glass, 1.6mm thick absorption coating, Ø47mm or Ø58mm and length 1500or 1800mm, resisting 25mm hail.

Tube quantity: 15, 18, 20, 24, 30, 32 and 36pcs.

Heat insulating layer: Improved polyurethane integral foaming with 50-65mm thick.

Bracket: Galvanized steel with 1.50mm thick.

Or stainless steel SUS304/2B with optional 0.31mm, 0.55mm, 0.88mm, 1.10mm thick.

Fasteners: Stainless steel screws.

Seal: Imported silicone rubber polymer.

Temperature: 45-95 degree centigrade, temperature is over than 40-54 degree in the winter

Heat preservation: 72hours

Hail resistance: 25mm

-----------------------------------------------------------------------------------

Working principle:

The selective coating on the inner cover of the evacuated tubes converts solar energy into heat energy and water in evacuated tubes the heat. When temperature rises along with density drops, and weight goes down, hot water will go up to exchange with cold water in tank. In this way, the temperature of the water in tank goes up.