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Monday, December 4, 2006

Even more solar water heating panels

When was the last time you looked closely?
The first two photos are of a Sola 60 installation which shows visible "discoloration" of the collector surface.





























This 2.5 year old array of Sola60 panels appears to be barely working, despite the cloudless day (Refer next three photos):











































What might be the mechanism that causes some of these examples of "discoloration"? The next two photos of a two year old Solahart give an indication of one of the factors: condensation






























Here is another Sola 60 installation that shows deterioration of the collector surfaces (Please note the dates of the photos (31/03/2007)















Here are two photos of a Solahart installation that has significant visible deterioration to both collector surfaces. Again, please note the date on the photos (31/03/2007)























Solahart and Sola60 feature prominently. This is only because I have not found many other brands. My findings are not necessarily representative of the industry.
If you would like to learn more, or to contribute to the discussions, go to the Rusty Panels Discussion Group (click on link at the upper right of this page, or complete the registration box).

If you have an example of a good or bad solar water heating setup, then write to me here. Please include digital photos and contact details to verify the details.
The following two photos are of a pair of Solahart panels that 2.5 years old and visibly corroding.












No building consent.









Here is an ingenious home made solar water heating system. Unfortunately, it has no ventialtion/drain holes with the result that it is now flooded with condensation.


















The two Solahart panels in the next three pictures are three years old. What appears to be corrosion can be seen on the panel surfaces.



Note the strip of bright white "corrosion" along the borders.
No building consent.








This was inspected by a Branz official recently; but nothing said of the condition of the panels.











The Solahart panels in these two photos are one year old and what looks like corrosion can be seen on the collector surfaces.
Note the damage to the pipe lagging from birds.
No building consent.


















Wow! Look at this home made solar array! Made by a good Kiwi bloke in his shed.





Here is another example of this resourceful fellow's fine work:



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