solar vacuum tube
1. CE ISO CCC certificate
2. 15 years' gurantee
3. OEM service offered
Price Terms:FOB,CIF,EXW
Payment Terms: T/T,Western Union,MoneyGram,L/C
Minimum Order: Negotiatable
Delivery Port: Customized
Contact Supplier
Packaging Detail: 9/10/12pcs per export carton with foam brackets
Delivery Detail: 7-10 days after payment
solar vacuum tube
1, Three-target Solar vacuum tube for solar water heater
2, ISO900:2000, CE certificate
3, 0.91 transmittance of the outer tube
Specifications:
1, Vacuum tube is consists of two layer of glass tubes
2, ISO900:2000, CE certificate;
3, 0.91 transmittance of outer tube
4, The outer tube is made of extremely strong transparent quartz sand which can resist impact from hail up to 25mm in diameter.
5, The inner tube is also made of quartz sand, but it is coated with a special selective coating with strong heat absorption and lowest heat loss.
6, The air is evacuated from the space between the two glass tubes to form a vacuum, so it eliminates heat loss.
7, This why the tubes are able to absorb the energy from infrared rays which can pass through clouds.
8, So it also can operate in low temperature and low sunlight medium.
| MODEL ITEMS | GB(single target) | |
| Configuration | Double-layer concentric boronsillicate glass tubes | |
| Glass thermal expansion coefficient | 3.3*10-6/ | 3.3*10-6/ |
| Diameter of outer tube | φ47±1mm | φ58±1mm |
| Diameter of absorber tube | φ37±1mm | φ47±1mm |
| Thickness | 1.5mm(±0.1mm) | 1.6mm(±0.1mm) |
| Transmittance of outer tube | 0.91 | 0.91 |
| Length | 1500±5mm | 1800±5mm |
| Solar selective absorbing coating | Al-N/Al | Al-N/Al |
| Absorptance(AM1.5) | ≥0.89 | ≥0.89 |
| Emittance | ≤0.0880 | ≤0.0880 |
| Vacuum | P≤5*10-3Pa | P≤5*10-3Pa |
| Stagnation parameter | ≥230/KW | ≥230/KW |
| Average Heat loss coefficient | ≤0.85W/(*) | ≤0.85W/(*) |
| Solar irradiation under stagnation | ≤3.5MJ/ | ≤3.5MJ/ |
| Hailstone resistance | hailstone diameter25mm | hailstone diameter25mm |
| Pressure-endure ability | 0.6mPa | 0.6mPa |
Model No.: 58*1800mm
Features: heat pipe solar collector
work well in low tempreture
fast thermal
low emission
Model No.: 58*1800mm
Features: heat pipe solar collector
high cold resistence
high heat resistence
fast thermal
low emission
Model No.: 58*1800mm
Features: solar power
high cold resistence
high heat resistence
fast thermal
low emission
Model No.: 58*1800mm
Features: vacuum pipe
high cold resistence
high heat resistence
fast thermal
low emission
Model No.: 58*1800mm
Features: solar power
high cold resistence
high heat resistence
fast thermal
low emission
Model No.: 58*1800mm
Features: solar heat pipe
1.excellent quality & cheap price
2.higher absorbility & lower emission
3.high thermostability & anti-cold
Model No.: 58*1800mm
Features: solar heat pipe
1.excellent quality & cheap price
2.higher absorbility & lower emission
3.high thermostability & anti-cold
Model No.: 58*1800mm
Features: heat pipe water heater
work well in low tempreture
fast thermal
low emission
Model No.: 58*1800mm
Features: vacuum tubes
high cold resistence
high heat resistence
fast thermal
low emission
Model No.: CN01
Features: solar Vacuum tube
1.best price with high quality
2.working time:15years
3.Delivery time:10-15days
Model No.: 58*1800mm
Features: heat pipe
work well in low tempreture
fast thermal
low emission
Model No.: 58*1800mm
Features: solar heat pipe
1.excellent quality & cheap price
2.higher absorbility & lower emission
3.ensure operation in winter
4.CCC,