David Hare-Scott wrote:
PolicySpy wrote:
David Hare-Scott wrote:



This shows how very unobservant you are. In the course of a year the
rising and setting directions of the sun will vary considerably.



PolicySpy writes:

My sun rises in the East, swings in the southern sky, and sets in the
West.


For only a few days of the year in temperate zones.

It swings in the southern sky lower in the winter and higher in the
summer.


And in the summer it rises and sets further towards the pole and in
winter more towards the equator.

Would anyone really believe that the path of the sun is so difficult
to understand as it relates to the yard and house ?


Apparently you are having trouble with it so I think it was worth the
mention.

Could anyone really believe that they had raised a significant debate
point ?

Only if you want to take the seasonal position of the sun into
account when doing your passive solar design for your house.

What is your latitude? What do you think is the difference there
between the rising position of the sun between mid winter and mid
summer?
David

It looks like there isn't going to be a continuation from Spy but some may
be interested in some facts anyway.

These figures are the difference in degrees in the rising position of the
sun between 20th June and 20th December. The difference in setting position
would be similar.

Miami 52
London 79
Moscow 90

Obviously it varies with latitude and the same sort of differences arrise in
the southern hemisphere as in the north. There is considerable difference
in how the sun strikes your house between summer and winter unless you live
in rather low latitudes, basically in the tropics. This is worth
considering when designing the passive solar heating/cooling of your house.

David