solar tube
1. with certificate of ISO 9001:2000, CE
2. offer OEM service
3. life time: 15 years
4,good price
Price Terms:FOB,CIF,EXW
Payment Terms: T/T,Western Union,MoneyGram,L/C
Minimum Order: Negotiatable
Delivery Port: Customized
Contact SupplierPackaging Detail: in carton
Delivery Detail: within 15 days
Solar tube
sample is available
solar vacuum tube feature:
1. Unique three-layer absorption technology
2. Unique Three-Layer(stainless steel/red copper/aluminum), allowing high temperature endurance and preventing peeling off even when the glass gets waxy degeneration
3. Unique Three-layer against degeneration, color feding or performance degeneration due to exposure the empty vacuum tube under the sun over time, extending the life of the product.
4. Incorporating three layer interference coating technology.
5. Unique super pure copper surface, allowing lower reflection and minimal heat loss.
6. Ideal heat collection efficiency in extreme cold water, with hot water available at a temperature of -30C
Three target tube
Structure | All-glass double-tube co-axial structure | |||||||||
Glass material | High borosilicate 3.3 glass | |||||||||
External pipe diameter&thickness | dia.=47±0.7mm&1.6mm dia.=58±0.7mm&1.6mm dia.=70±0.7mm&2.0mm | |||||||||
Internal pipe diameter&thickness | dia.=37±0.7mm &=1.6mm dia.=47±0.7mm &=1.6mm dia.=58±0.7mm &=1.6mm | |||||||||
Pipe length | 1500mm 1600mm 1700 1800mm 1900mm 2000mm 2100mm | |||||||||
Structure | Cu/SS-ALN(H)/SS-ALN(L)/ALN | |||||||||
Absorptive coating property | Sediment method | 3 target magnetron sputtering plating | ||||||||
Specific absorption | as=0.90~0.93(AM1.5) | |||||||||
Emission ratio | 0.05~0.075(80°C±5°C) | |||||||||
Vacuum tightness | P≤5.0×10-³Pa | |||||||||
Idle sunning property parameters | Y= 260 ~ 300m²°C/KW | |||||||||
Solar irradiation for obtaining | H≤4.7 MJ/ m²(dia.58) | H=3.7~4.2 MJ/ m² | ||||||||
apreset water temperature | H≤3.7 MJ/ m²(dia.47) | H=2.9~3.2 MJ/ m² | ||||||||
Average heat loss coefficient | Ult=0.4~0.6W/( m².°C) |