Main Products: Solar water heater systemSolar water heater ,Solar collector ,Solar air conditioner ,Air conditioner assemblyNo more than 0.1 MPa ,100 degree centigrade
High thermal efficiency 58*1800 three high glass vacuum tubes ( made in China )
USD $1 - $2 /Piece
Min.Order:1000 Pieces
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Haining Sanneng Solar Water Heater Co., Ltd.
Business Type: Manufacturer,Trading Company
Jiaxing Zhejiang ChinaMain Products: Solar water heater systemSolar water heater ,Solar collector ,Solar air conditioner ,Air conditioner assemblyNo more than 0.1 MPa ,100 degree centigradeProduct Details
High thermal efficiency 58*1800 three high glass vacuum tubes ( made in China )
Three-high vacuum tube specification:
| Type | Tri-element | Normal(blue) |
| Length | 1500mm/1800mm | 1500mm/1800mm |
| Outer tube diameter | 47mm/58mm | 47mm/58mm |
| Inter tube diameter | 37mm | 37mm |
| Weight | 1.3kg | 1.3kg |
| Glass thickness | 1.6mm | 1.6mm |
| Material | Borosilicate glass3.3 | Borosilicate glass3.3 |
| Absorptive coating | Grade ALN/ALN-SS/CU | Grade ALN/AL |
| Vacuum degree | P=5.0*10-3Pa | P=5.0*10-3Pa |
| Thermal expension | 3.3*10-6/°C | 3.3*10-6/°C |
| Insulation | >200°C | >200°C |
| Absorptance | >93% | >93% |
| Emittance | <8% | <8% |
| Heat loss | <0.8W/(m2°C) | <0.8W/(m2°C) |
| Maximum strength | 0.8MPa | 0.8MPa |
| Resist cold | -35°C | -35°C |
| Resist hailstone | Φ25mm | Φ25mm |
| Resist wind | 30m/s | 30m/s |
| Start-up temperature | =25°C | =25°C |
Starts up fast and collects solar energy fully.
Unique super pure copper surface, allowing lower reflection and minimal heat loss.
High level vacuum ensure operation under cold weather.
Long time warranty to 15 years.
Looking forward to having business with you in the near future!
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