Product Details

47*1500mm/47*1800mm/58*1800mm Solar Heat Pipe Vacuum Tube

Heat pipe vacuum tubes features:

Heat pipe vacuum tube consists of the glass vacuum tube and a copper heat pipe which is fixed by aluminium flake and silicon plu.A perfect combination of the vacuum tube and the heat pipe.

Anti-high temperature and Anti-freeze vacuum tube. The vacuum tube can withstand 400 high temperature and 30 Celsius degree below zero.
High efficiency and Good performance. The vacuum tube can heat up rapidly, and even work very well on cloudy days.
Constant warm keeping. The air between inner tube and outer tube is evacuated, which enable the tube to preserve heat.
Higher heat efficiency: advanced heat transferring style of the heat pipe, excellent selective absorb coating and perfect combination with high vacuum heat preservation.
Wide applicable range: as the heat pipe has less heat capacity, it can be started quickly even under cloudy fine day and collect heat effectively. It can work normally even-30 below degree. As no water in the vacuum tube, it can effectively prevent lowing of heat efficiency due to frost cracking or scaling.
Each individual tube can work independently, and the whole machine can still work if individual tube is damaged. The service life of the heat pipe can be longer than 15years.
The unique connection between the heat pipe and the vacuum tube can ensure both sealing and replace of damaged glass vacuum tube

Solar heat pipe vacuum tube Techinical Specifications
Item	Measured value
Heat conduction coefficient	>99%
Axial heat transition auantity	0.93-2.49kw/cm²
Heat conduction speed	>200mm/s
Axial temperature difference	1-2centi-degree/m
Starting temperature	20centi-degree
Starting speed	2min
Working temperature range	30centi-degree~300centi-degree
Resistance to high temperature	No deformation in 48hours under 250C high temp condition
Resistance to low temperature	-35C
Life	15 years

Heat pipe :

Pipe condenser diameter: 14mm and 24mm

Pipe condenser length: 50-70mm (customised demension available)

Pipe total length: 1650-1780mm according to outer vacuum tube lengths

Pipe material:High purity TU1 oxygen-free copper material

Assembled with solar vacuum tube;AL fins and silicone sealing plug

Vauum tube technical data:

Structure		All-glass double-tube co-axial structure
Glass material		High borosilicate 3.3 glass
Extermal pipe diameter and thickness		Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm Φ=70±0.7mm&=2.0mm
Internal pipe diameter and thickness		Φ=37±0.7mm&=1.6mm Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm
Pipe length		800mm –2100mm
Absorptive coating property	Structure	Cu/SS-ALN/ALN
	Sediment absorption	three target magnertron sputtering plating
	Specific absorption	a_s=0.93~0.96(AM1.5)
	Emission ration	0.04~0.06(80°C±1.5°C)
Vacuum tighterness		P≤5.0X10^-3Pa
Idle sunning property parameters		Y=260~300m².°C/KW
Solar irradiation for obtaining a preset water temperature	H≤4.7MJ/m²(Φ58)	H=3.7~4.2MJ/m²
	H≤3.7MJ/m²(Φ47)	H=2.9~3.2MJ/m²
Average heat loss coefficient		ULT=0.4~0.6W/(m². °C)