N
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- Jan 1, 1970
- 0
Pop Quiz for Solar Professionals (i.e. architects, interior designers,
landscape architects, builders, developers, HVAC engineers, energy experts,
and teachers of all of the above.)
You are a star if you get at least 10 right.
You are a moon if you get at least 5 right.
If you didn't get as many right as a solar professional should,
maybe you should get a conceptually clear heliodon.
Note that all questions refer to the northern hemisphere.
1. How many days per year do sunrays hit the north side of a building?
2. How many days each year does the sun rise due east and set due west?
3. How many days per year are there 12 hours of daylight and 12 hours of
darkness? Is that true for all degrees latitude? What are the exceptions?
4. How many degrees north of east does the sun rise on June 21?
5. What is the furthest north in degrees that the sun ever rises
in the northern hemisphere? Where?
6. What is the least north that the sun ever rises in the northern
hemisphere on June 21? Where?
7. How far south do you have to go so that the sun is directly overhead
on June 21 at 12 noon?
8. Does the sun always rise and set everywhere in the northern hemisphere?
9. What is the change in degree altitude from 12/21 to 6/21 at 12 noon?
10. What is the change in degree altitude from month to month?
11. Does the sun ever rise due south anywhere in the northern hemisphere?
Where and when?
12. On the equator, the sun is strongest on which day(s)?
13. At the equator, is it more important to shade the south wall
or the north wall?
14. What is the best shading system for north walls? (Circle answer)
a) Vertical fins b) Horizontal overhangs c) Combination of A & B
15. A certain south window has an overhang that is as wide as the window and
long enough so that even the December 21 noon is shaded. How long each day
is the window shaded before being outflanked by the sun?
From Norbert Lechner via the SBSE list...
Nick
landscape architects, builders, developers, HVAC engineers, energy experts,
and teachers of all of the above.)
You are a star if you get at least 10 right.
You are a moon if you get at least 5 right.
If you didn't get as many right as a solar professional should,
maybe you should get a conceptually clear heliodon.
Note that all questions refer to the northern hemisphere.
1. How many days per year do sunrays hit the north side of a building?
2. How many days each year does the sun rise due east and set due west?
3. How many days per year are there 12 hours of daylight and 12 hours of
darkness? Is that true for all degrees latitude? What are the exceptions?
4. How many degrees north of east does the sun rise on June 21?
5. What is the furthest north in degrees that the sun ever rises
in the northern hemisphere? Where?
6. What is the least north that the sun ever rises in the northern
hemisphere on June 21? Where?
7. How far south do you have to go so that the sun is directly overhead
on June 21 at 12 noon?
8. Does the sun always rise and set everywhere in the northern hemisphere?
9. What is the change in degree altitude from 12/21 to 6/21 at 12 noon?
10. What is the change in degree altitude from month to month?
11. Does the sun ever rise due south anywhere in the northern hemisphere?
Where and when?
12. On the equator, the sun is strongest on which day(s)?
13. At the equator, is it more important to shade the south wall
or the north wall?
14. What is the best shading system for north walls? (Circle answer)
a) Vertical fins b) Horizontal overhangs c) Combination of A & B
15. A certain south window has an overhang that is as wide as the window and
long enough so that even the December 21 noon is shaded. How long each day
is the window shaded before being outflanked by the sun?
From Norbert Lechner via the SBSE list...
Nick