Angle of sun - maximizing sun exposure

  • Context: Undergrad 
  • Thread starter Thread starter DaveC426913
  • Start date Start date
  • Tags Tags
    Angle Sun
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
3 replies · 4K views
DaveC426913
Gold Member
2025 Award
Messages
24,614
Reaction score
8,951
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!
 
Last edited:
Physics news on Phys.org
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.
 
russ_watters said:
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.

russ_watters said:
...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.
 

Attachments

  • PF20100605_poolroof.jpg
    PF20100605_poolroof.jpg
    13.5 KB · Views: 461
Last edited:
So, no one on PF knows about angle of insolation and solar inclination? :sadface:
 
Last edited: