Vacuum tube: 3.3high borosilicate glass
Minimum Order Quantity: 1 Pack/Packs
Supply Ability: 500,000 Piece/Pieces per Month
Payment Terms: L/C,T/T
Contact SupplierPackaging Detail: Standard export packing
Delivery Detail: 5days
Vacuum tube:
3.3high borosilicate glass
The vacuum tube of our solar water heater has the high absorption rate and low emission rate,
the absorption rate is 0.90-0.93 (AM1.5)
the emission rate is 0.05-0.075 (80±5)
vacuum tightness is P≤5.0*0.0001Pa
idle sunning property parameters is Y=220-260./KW
the average heat loss coefficient is Ult=0.6-0.7W(.)
It means the temperature in the water tank is range from 50 to 95.