Category: Solar Collectors

Solar Collectors, Evacuated Tube Solar Collectors

Evacuated tube solar collectors are one of the most common and simplest forms of the solar technology field. The evacuated tube solar collector is also known as a vacuum tube solar water heater. It consists of parallel rows of glass tubes connected to a header pipe. Each tube has the air removed from it to eliminate heat loss through convection and radiation. These glass tubes are cylindrical in shape, So, they can trap the maximum heat from the sun and increase the temperature of the fluid in the pipe, The cylindrical shape of the tubes receives the sun’s rays at a perpendicular angle. Therefore, even when the weather is cloudy, the evacuated tube solar collector efficiently performs its functions.

These collectors feature a heat pipe (a highly efficient thermal conductor) placed inside a vacuum-sealed tube. The pipe, which is a sealed copper pipe, attached to a black copper fin that fills the tube (absorber plate) is a metal tip attached to the sealed pipe (condenser). The heat pipe contains a small amount of fluid that undergoes an evaporating-condensing cycle. In this cycle, solar heat evaporates the liquid, and the vapor travels to the heat sink region where it condenses and releases its latent heat. The condensed fluid return back to the solar collector and the process is repeated. When these tubes are mounted, the metal tips up, into a heat exchanger (manifold).

Evacuated tube collectors function with the basic principle of applying sunlight to heat liquids.

Main Components:
Heat pipe—Transfer the heat to the fluid
Absorber plate—Absorbs the radiation entering the evacuated tube
Copper manifold—Heat exchanger

ONOSI Intelligent Temperature Control Technology

ONOSI Solar combines the patented five-dimensional heat transfer technology, uses self-developed working fluids and innovative technology, uses aerospace rare earth aluminum alloy materials as structural parts, and breakthroughs in the development of a new temperature-controlled heat pipe solar collector with super copper water heat pipes. The large-scale promotion of metal heat pipe vacuum tube solar collectors provides a revolutionary solution.

The most new innovation from ONOSI Solar is at the heart of the Heat pipe, we call it the Thermo Controlled Heat pipe. As the name suggests, a thermal temperature protection is integrated here. Unlike other mechanical protections, our protection is in the fluid that moves (flows) in the Heat pipe.

While the temperature in the traditional Heatpipe can easily rise to 250°C, the renewed Thermo Controlled Heatpipe stops at 110°C. As soon as this temperature is reached, the inside of the Heatpipe boils dry, so that the operation stops. In short, no protection in mechanical parts, but thermal in the core of the Heat pipe.

ONS-HPC Temperature Control Heat Pipe Solar Collector

1.Heat pipe
Attribute: intelligent temperature control
Condensing end：Φ24mm
Collector control temperature: 110℃
Water tank control maximum temperature (overheating protection): 80℃
Frost resistance≥-80℃
2.Vacuum tube：58-1800mm
3.Runner shell: aluminum alloy
4.Flow runner interface：φ22mm
5.Insulation: glass wool
6.Pass SOLAR keymark(ISO9806) certificate

• Brand: ONOSI or OEM
• Payment: T/T or L/C
• Delivery time: 15 days
• Minimum order: 1 set
• Shipping port: Shanghai or Ningbo