solar tube

solar tube 1.Main part of the solar water heater and solar collector 2.it is for pressured type solar system

solar tube

Model	Heat pipe 58-1800
Length	1855mm
Outer tube diameter	58mm
Inner tube diameter	47mm
Outer tube thickness	1.8mm
Inner tube thickness	1.6mm
	8mm
Inner copper heat pipe length	1700mm
Material	Borosilicate glass 3.3
Absorber dimension	1745mm*47mm
Absorptive coating	Aluminum Nitride
Absorptance	≥0.93
Emittance	≤0.08
Vacuum	≤5*10-3pa
Transmittance of outer tube	0.91
Stagnation temperature	<270°C
Heat loss coefficient	≤0.6w/(m2°C)
Bearing hailstone ability	Diameter ≤25mm
Condenser head length	45mm
Condenser head out diameter	14mm
Condenser head inner diameter	12.8mm
Absorber fin material	AluminumLength:820mm*4pcsThickness: 0.21mm
Net weight	2.5kg
Heat transfer media	Water
Freeze resistance	-40°C

solar tube