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The seesaw or teetertotter is powered by metal rods which
extend when
heated. Each of the two "seats" upon which the reservoirs sit
are
hinged to the teetertotter. Each seat also has it's own vertical
metal rod supporting it at it's outermost end ( each metal rod
stands on an insulated
footing many, many meters under ground
and supports the element above. The underground portion of
the rod is insulated from the earth). The heat is supplied to the
rods from black,
copper, solar radiation receivers. These receivers are set up
near
canopies which shade them during certain times of the day such
that they are heated and cooled in series. The outermost rods
control the reservoirs' pour. The weight of the reservoirs is
used
to tune the canopies, so that the system can stay in a constant
state of flow throughout the day.
At night previously unmentioned foundational metal rods cool
and the whole system tilts slightly into a state of extended, one
way flow.
A circular version seems like a natural extention of this method.
[link]
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