Wednesday, February 21st, 2007...11:50 pm

Flat mirrors

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Hopping that this idea can help a little to build faster
and less costly solar Plants.

Fig A show six convex mirrors, 1msq. each, projecting
Sun light into a heat receiver.

picture-21.jpg

Fig B show six flat mirrors, 1msq. each, projecting
Sun light into a heat receiver.

picture-20.jpg

Each figure show a very different system, but, both
do exactly the same work : projecting 6 msq of sun
light into a heat receiver.

Now we go to compare many points of the different
systems; we call: system A and system B.

system A use convex mirrors that costs very much
more than flat mirrors,,,,,,,,,,,,,,,,,,,,,,,,,,+ to system B.

Convex mirrors focus all at the same distance and
must be positioned all at the same distance from the
receiver; flat mirrors do not have focus point and
can be positioned at a differente distance from the
receiver,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,+ to system B.

Convex mirrors must have more precise mechanics
to distribute the focus point on the receiver to avoid
over heat in one point; Flat mirror have not problem
of this kind, heat is always stable,,,,,,,,,+ to system B.

Because convex mirrors must be placed all at the
same distance from the heat receiver, a mobile frame
extended in elevation is required tha can have problem
because of the wind. Flat mirrors can be placed all at
floor level, avoiding many problems,,,,,+ to system B.

All points are in favor of flat mirror. Peaple involved
with this, please give a good look at this matter.

(sp)

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