CE approved three targets coating solar vacuum tube

Features:

High solar thermal conversion and low heat loss

Stable advanced coating: up to 380°C

High level vacuum ensure operating under cold weather

Starts up fast and collects solar energy fully

High absorption rate

Low reflectivity

3 targets coating

Long time warranty: 15 years

Specifications:

Materials: Cu-SS-Al-N/Al

Structure: glass coaxial double layers tube

Tube diameters:

Outer: 47 and 58 ±0.7mm

Inner: 37 and 47 ±0.7mm

Tube thickness: 1.6 ±0.15mm

Absorption: ≥0.94

Emittance: ≤0.06

Vacuum: ≤5 x 10 to 3Pa

Transmittance of outer tube: 0.91

Heat loss co-efficient: ≥0.6W/m²

Bearing hailstone ability: ≥25mm

Pressure endurability: 1MPa

Sizes: 47 x 1,500 and 58 x 1,800mm

• Brand:
  Longquan Solar & OEM
• Color:
  Produced according to customer requirements
• Place of Origin:
  China
• Price Terms:
  FOB, CIF
• Payment Terms:
  T/T, L/C
• Supply Ability:
  18,000 pcs/day
• Delivery Time:
  7 days/according to the order
• Minimum Order:
  100 pcs