Angle of sun - maximizing sun exposure

  • Context: Undergrad 
  • Thread starter Thread starter DaveC426913
  • Start date Start date
  • Tags Tags
    Angle Sun
Click For Summary

Discussion Overview

The discussion revolves around optimizing the angle of a roof over a pool to maximize sun exposure while minimizing shade. Participants explore the implications of solar angles, particularly at a latitude of 43°N, and how these angles affect the design of the roof.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks to design a roof that maximizes sun exposure for an above-ground pool while protecting it from debris.
  • Another participant suggests that while the maximum sun angle is 70°, a roof angle of around 50° might minimize shade, proposing a rotation of 15 to 30 degrees west for better exposure.
  • A later reply emphasizes that the goal is to ensure maximum exposure time for solar heating, regardless of the specific days or times the pool is used.
  • One participant expresses frustration over a perceived lack of knowledge about solar angles and insolation among the forum members.

Areas of Agreement / Disagreement

Participants do not appear to reach consensus on the optimal angle for the roof, with differing views on the importance of maximizing exposure versus minimizing shade. The discussion remains unresolved regarding the best approach to achieve the stated goals.

Contextual Notes

Participants reference specific solar angles and the implications of seasonal and daily variations in sun position, but the discussion does not clarify the assumptions behind these angles or their practical applications in roof design.

DaveC426913
Gold Member
2025 Award
Messages
24,470
Reaction score
8,732
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: 450
Last edited:
So, no one on PF knows about angle of insolation and solar inclination? :sadface:
 
Last edited:

Similar threads

  • · Replies 15 ·
Replies
15
Views
6K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 8 ·
Replies
8
Views
5K