Metal Solar Heat Pipe

Features of Solar Evacuated Tubes
1.This metal heat pipe vacuum tube adopts flat plate absorber.
2.It has high efficiency under low ambient temperature due to ultra high vacuum.
3.With small thermal capacity of working fluid, this equipment can start rapidly.
4.Our solar evacuated tubes have low heat losses due to thermal diode effect.
5.Using patented thermo-compression sealing technology, this metal heat pipe vacuum tube has no corrosion or scaling problem.
6.Characteristics of these solar evacuated tubes are easy installation and maintenance, reliable and durable, high pressure resistance and thermal shock resistance.

Principle of Metal Heat Pipe Vacuum Tube
With a flat absorber profile, the solar evacuated tubes have large dimensions with an outer diameter of 100 mm and a length of 2000 mm. The heat transfer from the absorber to the heat circulation is performed by the heat pipe which is mounted in the absorber. Inside the metal heat pipe vacuum tube, the heat is conducted with high efficiency to its upper end. From there it is released to the heat circulation. The heat pipe is charged with a small amount of water and carefully evacuated before sealing.
Since the heat transfer liquid of the heat circuit does not flow through the collector itself, installation is very simple and a trouble-free operation is guaranteed. The operation of the solar water heating system will not be interrupted even if one of the collector tubes should get damaged.

Parameter of Solar Evacuated Tubes

Specification	Heat pipe vacuum tube with flat absorber
Configuration
Absorber area	0.173 m²
Weight	4.6 kg
Installation tilt angel	15° ~ 90°
Dimension	Ø100mm x 2000mm
Heat pipe	Heat pipe copper Ø8 mm
Absorber material	Copper- Aluminium sunstrip, 0.47 mm thickness
Selective coating	Aluminum nitride Al-N-O selective coating Absorptance: a > 0.94, Emittance: ε < 0.06
Glass tube material	Borosilicate glass Thickness: 2.8 mm Transmittance of glass: 91%
Vacuum	< 10-5 mbar
Min. ambient temperature	-45°C
Stagnation temperature	234.8°C
Resistance to hail	11J+-1J

We have solar evacuated tubes, solar collector, solar storage tank, solar water heating systems, solar water heater accessories and metal heat pipe vacuum tube for sale. As a professional supplier, we have the ability to annually output 20 thousand heat pipe solar collectors, 5 thousand U pipe evacuated tube solar thermal collectors, 10 thousand solar storage tanks, 10 thousand integrated pressurized solar heaters and 30 thousand non-pressure solar water heaters.