300L Non Pressurized Solar Water Heater 250L Enamel White Water Tank Solar Collector

300L Non Pressurized Solar Water Heater 250L Enamel White Water Tank Solar Collector

1. Whole glass vacuum tubes adopt super hard borax and silica glass

2. Absorb rate: ≥93%, thermal radiation rate: ≤6% (100)°c

3. Temperature when exposed to sun without water: 250°c, 2.5hours
to boiling if using single tube

4. Resist 25mm hail, using life can last 20 years

5. The price list is not including the reflector

Technical Specifications:

Inner tank use stainless steel SUS304, outside water tank shell all are made of Colored steel sheet, welded by argon arc. Water is pure and drinkable

Heat insulation of water tanks adopts polyurethane foam, thickness is 55mm

Silicon rings to connect and seal them

The tubes and supports are adjustable, power bearing is average, and can assure the vacuum tubes to use long time

Whole glass vacuum tubes adopt super hard borax and silica glass

Absorb rate:≥ 93%,thermal radiation rate:≤6%

Resist 25mm hail, using life can last 15 years

Temperature when exposed to sun without water: 250°c, 2.5hours to boiling if using single tube.

Packaging & Delivery:

Packaging Details: CARTOON ;for samples ,the vacuum tubes will be packaged by wooden box.

Delivery Detail: 15working days for 20GP ;20days for 40Hq container.

Working principle:

Non-pressure solar water heater of all glass evacuated tube collector integrated with storage tank, are ideal for use in houses and other applications where cheap, reliable hot water supply is required.
They are simple, economic and practical.
As the specific gravity of hot water and cold water are different, cold water goes downward and hot water goes upward.
When cold water in evacuated tubes is heated, it becomes lighter and goes to the water tank.

While cold water in the tank goes down to the evacuated tubes
Through this circulation, the cold water in the water tank will be gradually heated.

Technical Data: