SG solar vacuum tube/ SG solar water heater

Three target vacuum tube:
1.widely used for solar water heater
2.ensure operation in winter
3.15years' warranty for tube


Three target vacuum tube technology:

Material apply for high 3.3 borosilicate glass
Models Φ47/Φ58/Φ70
Structure all-glass-coaxial double-layer tubes
outer tube diameter 47±0.7mm &=1.6mm
58±0.7mm &=1.6mm
70±0.7mm &=2.0mm
inner tube diameter 37±0.7mm &=1.6mm
47±0.7mm &=1.6mm
58±0.7mm &=2.0mm
Length: 800/1200/1500/1600/1800/1900/2000/2100mm.
Absorptance 0.93~0.96
Emittance 0.04~0.06(80°C ±1.5°C)
Transmittance of outer tube 0.91
Stagnation temperature(height) 280~300°C
Pressure-endure 1Mpa
Stable advanced coating up to 380

Starts up fast and collects solar energy fully.
Can resist impact of hail:hailstone diameter 30mm.
High level vacuum ensure operation under cold weather.
Ideal heat collection efficiency in extreme cold water, with hot water available at a temperature of -40°C.
Long time warranty to 15years.
The evacuated tube with superconductive heat-pipe is the most advanced product in the world.
We can also provide products as your request.