As you would know if you have used a glas lined thermos flask, a vacuum is an excellent insulator, This is important because once the evacuated tube absorbs the radiation from the sun and converts it to heat, we don't want to lose it! The vacuum helps to achieve this, The insulation properties are so good that while the inside of the tube may be 150? C / 304oF, the outer tube is cold to touch, This means that evacuated tube water heaters can perform well even in cold weather when flat plate collectors perform poorly due to heat loss (during high Delta-Tconditions)
Vacuum tube:
Vacuum tube,good quality,15 years guarantee for vacuum tube,competitie price
Package: | carton |
Supply Ability: | 100 Piece/Pieces per Day |
Minimum Order Quantity: | 100 Piece/Pieces |
Payment Terms: | T/T |
Port: | Shanghai |
Fob Price: | US$1-2Shanghai |
Pipe Material: | Glass |
Application: | Water Heater |
Type: | Non-Pressure |
Place of Origin: | Zhejiang China (Mainland) |