In each vacuum tube there is a U pipe with direct flow-through that is connected to the header pipe inside manifold. The U pipe is seamed in an aluminum heat transfer fin in the interior of the vacuum tube that transmitsthe heat from the interior tube of the U pipe.
Solar radiation permeates the outer glass tube and is captured on the outside of inner glass tube by highly selective sputter layer. The capturedsolar radiation is transmitted to flush-contact aluminum shield then copper pipe filled with heat transfer fluid. The 360¡ã aluminumheat transfer fin assures the fastest energy transfer.
Advantage:
The Suntimes range of U-Pipe Solar Collectors can be installed perfectly vertical or horizontal, allowing for a wider variety of installation options. It follows, therefore, that these collectors can be used where others cannot, such as on the top of a flat roof building where tilt mounting is not an option due to space limitations, as an overhang from buildings where there is no roof space to mount the solar collectors, or flush vertically on a wall.
Direct Flow is a very simple system that works in a similar fashion to a conventional flat plate collector but with the benefit of vacuum insulation.
The U-Pipe collectors have the same copper tube as a traditional heat pipe collector, but it instead bends around on itself at the bottom of the glass tube and returns directly into the double manifold. This enables the heat transfer fluid to travel through the tube for direct gain from solar radiation. As the heat transfer fluid is heated, it is pumped around the collector tubes and eventually passes through the secondary coil in the hot water storage cylinder. The U-Pipe Collectors require fewer tubes on the roof than heat pipe to reach the same peak efficiency levels.
Feature:
1)Direct Flow STU series produces a staggering 758 Kwhm² output 58mm x 1800 tubes
2)Can be installed vertically, horizontally & on flat walls- allowing flexibility of system design and installation.
3)Smaller footprint than Heat Pipe & Flat plate systems - Less visually intrusive
4)No parabolic mirror ,No efficiency decrease during service lifetime.
5)Direct flow U pipe technology ,More rapid heat transfer
6)Suitable for mains pressure water, operate Up to 8bar/116psi
7)Pre- assembled in all series model , no roof assembly
8)Ideal for flat roof and Inclined up to 90¡ã
9)Black anodised aluminium casing and frame,corrosion proof sleek single colour design
10)Dry tubes, Quick & easy replacement in situ without draining
11)Tested to withstand 25mm hailstones at 23m/s
12)Outperform flat plates ,Autumn , Winter & Spring
13)Operates at temperatures of -40 ¡æ
14)22mm male copper manifold fitting ¨C ¡°plug and play¡± design provides fast and simple installation.
