Features:

1).Vacuum tube:absorb efficiency ≥93%,heat lose≤6%

2).Freeze Protection: Vacuum can prevent freeze in cold climate,-20 degree

3).Working pressure:2.0 bar for working,3.0 bar for testing

4).Safety:even have water in tube,but the glass is specificall for outdoor,25mm diameter hail will no damage

5).The best efficiency:directory heating structure,efficiency more than 65%

6).Provide enough heat energy to storage tank,each square meter can save 6khw energy every day!

7).Details of Vacuum Tube please click here

Products list:

1,Always used in non-pressure hot water systems,the collector install on roof,and the tank on room,a circulate pump from collector to tank.

2,The cheapest solar collector for commercial or industry solar systems,supply enough hot water,always need a pump pressurized hot water out.