Solar Collector Vacuum Tube collector

• Specifications:
  • Manifold:
    • Interior: red copper with 1.2mm thickness
    • Exterior: aluminum alloy with 1.8mm thickness
    • Maximum pressure: 12bar
    • Coating of vacuum tube: SS-C/CU 3-high vacuum tubes
    • Heat preservation: 72 hours
    • Hail resistance: 25mm
    • Insulation: polyurethane/rock wool
    • Optimal installation angle: vertical: 30 to 70 degrees
    • Pressure drop: 7bar, 3.3L/minute for 20 tube manifold
    • Optimal flow rate: 0.1L/minute/tube or 0.026G/minute/tube
    • Heat pipe: anti-freezing less than -35 degrees
    • Glass tube dimensions: 58mm x 1.8m
• Applications:
  • Domestic, industrial and commercial heating use
  • Suitable for open or closed (glycol-water)
  • Space heating
  • Caravan parks, hotels, schools, public showers/kitchens and restaurants
  • For large scale water heating

 Working principle

1). The operation of the solar collector is very simple;
2). Solar absorption: solar radiation is absorbed by the vacuum tubes 
and converted into heat energy;
3). Heat energy transfer: heat pipes conduct the heat energy from the 
vacuum tube to the header copper pipe of solar collector;
4). Heat energy storage: anti-freezing liquid is circulated through the header copper

pipe of solar collector and copper coil in the storage tank, via intermittent pump cycling. Each time the liquid circulates through the header copper pipe, the temperatures is raised by 5-10°C.

Throughout the day, the water in the tank is gradually heated.