Specifications

1.easy installation
2.safe reliablity..
3 years lifetime
4.OEM accept

Heat pipe solar vacuum tube

Features

1. It can withstand pressure of tap water when it works
2. Without incrusting, long usage life
3. One or several glass tubes broken will not fluence system work 
4. Tubes can be laid for long time under the sun without water in the tank
5. No worry about being frozen because there is no water running inside the tubes when working
6. Longlife time free replacement

Structure		All-glass double-tube co-axial structure
Glass material		High borosilicate 3.3 glass
External 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		1200mm 1500mm 1600mm 1800mm 1900mm 2000mm  2100mm
Absorptive coating property	Structure	Cu/SS-ALN(H)/SS-ALN(L)/ALN
	Sediment method	3 target magnetron sputtering plating
	Specific absorption	0.93~0.96
	Emission ratio	0.04~0.06
Vacuum tightness		5.0×103 Pa
Idle sunning property parameters		260~300./KW
Solar irradiation for obtaining a preset water temperature	H≤4.7MJ/(Φ58)	H=3.7~4.2MJ/
	H≤3.7MJ/(Φ47)	H=2.9~3.2MJ/
Average heat loss coefficient		0.4~0.7W/(.)
Resistant Hail		25mm
Life aged		15 years

 

Advantages:
1. Highly efficient absorber or high perfomance with daily average efficiency over 50%
2. Start up quickly, heat pipe transfer the heat energy into the storage tank in one direction
3. With standard pressure of 6 Bar, can be connected directly with tap water.
4. No water inside the evacuated tubes; The solar water heater can still in service even with several tubes broken
5. Highly efficient insulation with polyurethane foam
6. Simple structure., easy to assembly and install
7. Can be used all year round in the cold climate