1.Anti-freezing, low temp use
2.ISO9001.CE,CCC certified
3.3years guarante,15years lifetime
4.Delivery within 15 days
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 cartons packing or Customer requirements, also samples packing with wooden case
Delivery Detail: about 15 days after receiving deposit
YOUNN High borosilicate 3.3 glass vacuum tube solar energy collector(yn-zk)
1.Anti-freezing, low temp use
2.ISO9001.CE,CCC certified
3.3years guarante,15years lifetime
4.Delivery within 15 days
Specification:
Models | Classic vacuum tube | Triple vacuum tube | ||
Structure | All glass double tube co-axial structure | |||
Glass material | High borosilicate 3.3 glass | |||
Outer tube diameter and thickness | 47±0.7mm/58±0.7mm | |||
Inner tube diameter and thickness | 37±0.7mm/47±0.7mm | |||
Tubes length | 1500±4mm/1800±4mm | |||
Material of coating | AL/N/AL | Al N/Al N-SS/Cu | ||
Absorptance | 0.90~0.94 | 0.94~0.96 | ||
Vacuum | P≤2×10-3pa | P≤2×10-3pa | ||
Transmittance of Outer Tube | 0.93 | 0.93 | ||
Stagnation temperature (height) | 250~270°C | 270~300°C | ||
Heat-loss coefficient | ≤0.6w/ m2*°C) | ≤0.3w/ m2*°C) | ||
Bearing hailstone ability | hailstone diameter25mm | hailstone diameter25mm | ||
Pressure-endure ability | 1MPa | 1MPa | ||
Life span | 15 years | 15 years | ||
Pls read the specification carefully, for other questions you want ask, kind send email or chart with me on line.