- Please note I've changed the Subject title again -- 'tilted' fits better than 'angled'.
Interesting. I'll have to google Gunnar Birkerts. I remember discussing the tilted
window idea with the (strange but brilliant) late Roger Rasbach some 30 years ago, but
as I recall he wasn't interested in any ideas he hadn't incorporated into his "provident
planner" house in The Woodlands. By the way, if that house still exists at 2701
Wildwind, Wilding Estates, it would be interesting to visit it for next year's solar
But I digress. I'm proposing to reflect away direct sunlight when it is not wanted in
the house, yet allowing skylkight in. I think what you describe at the Corning Glass
museum is something else; I'm talking about cheaply just tilting plain old flat-glass
- We are all Human beings here together. We have to help one another, since otherwise
there is NO ONE who will help.
- All countries need a NO REGRETS strategic energy policy. Think ahead 7 generations.
> That reflective detail was the hallmark of Gunnar Birkerts. The detail involves
> using two curved mirrors to bring indirect light into the space. He used that detail
> on many of his projects (widely published once, but I was not able to find a site
> with that famous detail on short notice)
> Many years ago, I experienced that detail at the Museum of Glass at Corning, NY. It
> is a fascinating detail - however creating an extremely busy space inside. Through
> the curved mirror surfaces one would
> experience the motion of cars moving up and curved along in most
> fasinating directions....It works well in a space that can stand that much movement.
> Unfortunately for much of the Corning glass museum they were showing very small fine
> objects - I remember one room where they showcased delicate escavated 2nd century
> glassware. To avoid the movement from exterior, they used a thin curtain floor to
> ceiling on the inside of those rooms which "quiet down" the space. I remember
> feeling enormous disappointment then, thinking that the application did not serve
> the contents that the space was designed for. And also that the brilliance of that
> detail was eradicated by the use of a simple
> semi-sheer curtain. Now, more than 20 years later, my interpretation is somewhat
> altered -the architect succeeded in bringing the indirect light, and the user
> succeeded in altering the space to suit the exhibit eliminating the distractions and
> soften the light to a soft glow.
> Ariel Thomann wrote:
>> OK, here's my crazy idea, and it's one I haven't seen in any book on passive solar
>> design. It goes back to my high-school physics and what I learned there about what
>> happens to light when it hits glass. Normally it goes right on
>> through, and that's what
>> a window is all about. However, if you get your cheek against a window and look at
>> glass, you will see that a short distance from you it starts acting as a weak
>> and as look at it further away, it acts totally as a mirror and you can't see
>> on the other side. It's total reflection; check out the following:
>> It seems to me that if you lean your window outward at the top
>> (probably 10 degree angle
>> suffices for your latitude; it will vary slightly depending on type of glass, will
>> be slightly different for UV and IR) it will reflect back out
>> essentially all the direct
>> sunlight (thus making your floor OUTside that window very hot...). That angle would
>> for noontime sun on the summer solstice; it would take substantially greater tilt
>> to do
>> the job at other times of the year and day. But you might find that your solar heat
>> gain goes down a fair bit, at a relatively low cost.
>> Side effect: when you look from inside out at night, you will see only ceiling
>> reflections. And, oh, looking from outside in at night would be totally transparent
>> (but you may need to do something to keep pets, kids and other retards from
>> into the glass -- adults too, I guess).
>> I'm sure 99% of builders will think it's crazy, so discuss it instead with someone
>> knows optics better than I do. Enjoy.
>> Let me know the outcome!
>> > Cabana: Double french doors facing west, but with a veranda overhang
>> of about 8
>> > feet. Two largish windows facing south, toward the
>> > harbor. None east.
>> > Kid's house: Lots of windows and a couple of sliding glass doors
>> facing south,
>> > toward the harbor, some with verandas. One west, no overhang. Four
>> east, no
>> > overhang.
>> > Our house: (just starting) Will have eight sliding glass doors facing south,
>> toward the harbor, with six of them under the veranda
>> overhang of 13
>> > feet. Five large windows with no overhang. Just two large windows
>> and a glass door
>> > facing west. Four windows and a glass door facing east.
>> > On Oct 4, 2006, at 5:31 PM, Ariel Thomann wrote:
>> >> Do you have any large windows facing West, South, or East?
>> >> Ariel