Sun vacuum tube for solar water heater
higher heating efficiency
normal capacity 6L/T
eco-friendly,Low coefficient
Price Terms:FOB,CIF,EXW
Payment Terms: T/T,Western Union,MoneyGram,L/C
Minimum Order: Negotiatable
Delivery Port: Customized
Contact SupplierPackaging Detail: standard export carton with foam or accoding to request
Delivery Detail: 7 working days for sample, 10 working days for container
Sun Vacuum Tube for Solar Water Heater
FEATURE: a perfect combination of the vacuum tube and the heat pipe
1. higher heating efficiency:
Heat transferring can be started quickly even under cloudy day. It can work normally even -30 below degree. As no water in the vacuum tube, it can effectively prevent the lowering of heating efficiency due to frost cracking or scaling
2. 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 15 years
3. The unique connection between the heat pipe and the vacuum tube can ensure both sealing and replace of the damaged glass vacuum tube.
Structure | All-Glass Double Tube Co-Axial Structure | ||
Glass Material | High Borosilicate 3.3 Glass | ||
External Pipe Diameter & Thickness | dia.=47±0.5mm &=1.6mm, dia.=58±0.5mm &=1.6mm, | ||
Internal Pipe Diameter & Thickness | dia.=37±0.5mm &=1.6mm, dia.=47±0.5mm &=1.6mm, | ||
Pipe Length | 1500mm,1800mm | ||
Absorptive Coating Property | Structure | Cu/SS-ALN(H)/SS-ALN(L)/ALN | |
Sediment Method | Three Layer Magnetron Sputtering Plating | ||
Specific Absorption | as=0.92~0.96(AM1.5) | ||
Emission Ratio | 0.01~0.03(80°C±5°C) | ||
Vacuum | P≤2.0×10-3Pa | ||
Idle Sunning Property | Y= 260 ~ 300m²°C/KW | ||
Solar Irradiation for Obtaining a Preset Water Temperature | H≤4.7 MJ/ m²(dia.58) | Solar Irradiation for Obtaining a Preset Water Temperature | |
H≤3.7 MJ/ m²(dia.47) | |||
Average Heat Loss Coefficient | Ult=0.4~0.6W/( m².°C) | ||
Pressure-Endure Ability | 1.0Mpa | ||
Hail-Endure Ability | 30mm | ||
Lifetime | 15years |