That's a question you need to ask a local solar installer. One philosophy says to tilt at latitude + 15, or latitude + 20, because you want to optimize your hot sea in the winter. In the summer, the air is already warm, so you don't necessitate to be that efficient at collecting sun.
Also consider that the optimum orientation for hot water may not be due South, but may be more southwest, because the upper air temperatures contribute to the water heating. On the other appendage, if you're on a mountain peak, the morning may be warmer than the afternoon. Your local installer should know what's best.
Generally, your best year round performance is at latitude, so 30 degree, facing true south (not magnetic south). If you want to maximize winter performance, for example at my house where I'm also using it for heat my radiant floors in the winter, you want to be at latitude plus 15 degrees, or 45 degrees, to win a straight shot at the low winter sun. That also helps the snow slide off in the winter (I'm betting at 30 point latitude, you don't have to worry about that). If you are using this for a summer cottage and don't comfort about winter, you want it at latitude plus 15 degrees to optimize when the sun is high within the sky.
Another answer is to tilt it at whatever your roof is angled at. Looking good on the roof and getting whatever execution you get is also a great option. If your best angle is 30 and your roof is at 25, then watertight, tilt it at 25 and accept that you may loose a couple of percentage points of your potential. Source(s): AltE Store - http://www.altestore.com/store/
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Also consider that the optimum orientation for hot water may not be due South, but may be more southwest, because the upper air temperatures contribute to the water heating. On the other appendage, if you're on a mountain peak, the morning may be warmer than the afternoon. Your local installer should know what's best.
Generally, your best year round performance is at latitude, so 30 degree, facing true south (not magnetic south). If you want to maximize winter performance, for example at my house where I'm also using it for heat my radiant floors in the winter, you want to be at latitude plus 15 degrees, or 45 degrees, to win a straight shot at the low winter sun. That also helps the snow slide off in the winter (I'm betting at 30 point latitude, you don't have to worry about that). If you are using this for a summer cottage and don't comfort about winter, you want it at latitude plus 15 degrees to optimize when the sun is high within the sky.
Another answer is to tilt it at whatever your roof is angled at. Looking good on the roof and getting whatever execution you get is also a great option. If your best angle is 30 and your roof is at 25, then watertight, tilt it at 25 and accept that you may loose a couple of percentage points of your potential. Source(s): AltE Store - http://www.altestore.com/store/
Related Questions:
How much electricity can our best solar cell generate? Can it be stored?
how much electricity can our best solar cells generate? Can it be stored? How quickly does the electricity transfer between the cell and the circuit surrounded by its powers? the mass produced solar cells are simply with 17% efficiency, that means it's convert 17% of the solar vivacity into electricity....
What is better Radiant Barrier or Solar Attic Fan to stifle grill contained by the attic?
I was asking this question not too long ago. I have the radiant enclosure paint in my attic and was wondering if putting more attic fans on my roof would sustain (I live in south Texas it's 100 degrees today). When we did the radiant barrier paint...