Angle of sun - maximizing sun exposure

[DaveC426913]

I'm looking into putting a "roof" over my pool. I wish to ensure that the roof does not obstruct the sun.

You heard me. I wish to build the opposite of a shade roof.

The roof is intended to protect my pool from detritus falling from surrounding trees (no, cutting them down is not an option) of which there is a lot. But I want to maximize the sun's exposure on the pool. It's an above ground 14' round.

If my calculations are correct, here at 43°N, the height of the sun at maximum will be 70°
http://www.physicalgeography.net/fundamentals/6h.html (Table 6H-1, bottom of page).

Is that at true South?



No way. My roof would need to be ... 42 feet above ground at its Southern edge!

 

[russ_watters]

Yes, that's due south, but if the maximum angle is 70, then the angle required to minimize exposure should be somewhat less - perhaps 50 degrees...and you may want to rotate it 15 or 30 degrees west. Because:

1. You'll be using the pool on other days besides June 21st.
2. You'll be using the pool at other times besides noon...more often after than before.

 

[DaveC426913]

Yes, that's due south, but if the maximum angle is 70, then the angle required to minimize exposure should be somewhat less - perhaps 50 degrees

No, I want to maximize exposure. Ideally, I do not want any part of the pool in shade at any time.

...and you may want to rotate it 15 or 30 degrees west. Because:

1. You'll be using the pool on other days besides June 21st.
2. You'll be using the pool at other times besides noon...more often after than before.

Sorry, maybe I've misrepped the issue. It matters not what days or times the pool is in use, what matters is maximum expsoure time to provide maximum solar heating of the water.

 

[DaveC426913]

So, no one on PF knows about angle of insolation and solar inclination? :sadface:

 

[pmacias]

I understand your desire to maximize sun exposure on your pool while also protecting it from debris. In order to achieve this, there are a few factors to consider.

First, it is important to note that the angle of the sun changes throughout the year due to the Earth's tilt and orbit around the sun. This means that the angle of the sun at maximum will not always be 70° at your location of 43°N. It will vary depending on the time of year.

Second, the angle of the sun also varies depending on the time of day. In order to maximize sun exposure on your pool, you will need to consider the angle of the sun at different times of the day, not just at maximum.

To determine the best angle for your roof, you will need to take into account the specific location and orientation of your pool, as well as the surrounding trees and their height. This will require some precise calculations and measurements.

One option to consider is a retractable or adjustable roof that can be moved to allow for maximum sun exposure at different times of the day and year. This would also allow you to protect your pool from debris when needed.

Another option is to use a translucent or partially transparent material for your roof, which would still allow for some sunlight to reach your pool while also providing protection from debris.

In terms of the angle of your roof, it does not necessarily need to be at true South. It can be oriented slightly east or west to allow for more sunlight at certain times of the day. Again, this will depend on the specific location and orientation of your pool.

Overall, the best approach would be to consult with a professional who specializes in pool design and construction. They will be able to assess your specific situation and provide the best solution for maximizing sun exposure on your pool while also protecting it from debris.