1. Long life: 15 years for main body, 10 years for vacuum tubes 2. Stainless inner tank,Galvanized PVDF outer tank 3.OEM ODM

Compact unpressurized vacum tube solar water heater

1. Working Principle

Vacuum tube absorbs solar energy and will convert it into heat energy. Water inside the vacuum tube be heated after again the heat energy from tubes. Because of density and height differently, the hot water gose up to the water storage tank while cold water flows down to the vacuum tubes and continue to be heated.......

2. Water storage tank materials:

 Inner tank

 ........SUS304-2B foot grade stainless steel or SUS316 Stainless steel

 ..........Thickness: 0.4mm

 ...........Diameter: 360mm or 380mm

 Outer tank

 ..........Galvanized color steel plate ( the PVDF material )

 ..........Color: According to customers demands

 ..........Thickness: 0.4-0.5mm

 ..........Diameter: 460-480mm

Evacuated tube compact non-pressure solar water heater