The price of the tube includes a copper capacitor and internal aluminum profiles.

• Vacuum tube dimension: ￠58/1800mm
• Vacuum tube weight: 2,3 kg
• Copper thermally conductive tube : condenser ￠14*1mm;body￠8
• Heat pipe start temperature: ≥25℃
• Lowest working temperature: –35°C
• Absorbance: ≥93%
• Heated water from one tube: 17MJ/m² day, ΔT=35°C