Idea of "SMA SunMill"

[Khwartz]

facinating idea there.

Nice to know you enjoyed it ^_^

what if to re orient the turbine to be placed above rather than below?
that would result in what you see on rooftops that works rather well at less cost.

Sorry, didn't get what you talk about, maybe my bad English; could you develop or provide a schematic? please.

if you can't re orient placement of the turbine,

Sorry, but that's not a turbine, while a turbine works with a flow of something. It may be used too of course and combined with the basic principle of the wheel/cylinder/"mill", but in fact, the basic principle is:

THE CONTINUOUS ROTATING UNBALANCED SIDES RESPECT TO THE VERTICAL AXIS.

trying to think of things for this, mercury reacts to temperature changes, though is not solid enough like other temperature reactive metals such as the ones you described.

Maybe but what we are looking for here is, ideally:

TWO WAYS SHAPE-MEMORY TRAINED MATERIAL (often metal, often alloy, often nitinol).

solenoid possible?

Have a look at my two videos about "Spring Skin SMA Mill" (something like that).

a vortex controlled heat transfer built into the exhaust system, used to focus the direction of thermal energy more concentrated towards
a diaphragm that moves a connecting rod to a rotor/wire coil.
to power mechanical actuators that could adjust position of the fins that are moved?
sorry for stepping away from the memory metal solution to your challenge with these ideas, a memory metal would seem a easier solution.

Sorry, looks I am too bad in English to clearly enough understand your proposal. Could you provide a schematic here too? please.

heres another interesting possibility for researching that might help the development of your idea.

Que's device, called a CNF-PZT Cantilever, consists of a "carbon nanotube film on a cantilever base of piezoelectric material." When the carbon nanotube film absorbs thermal energy, such as heat and light from other devices, it forces the cantilever to bend. The cyclical bending then generates an electric current in the piezoelectric material.

Very interesting, it could allow to combine here both principles: a differential temperature gravitational one and a differential temperature electrical one...

According to a press release, "the device could generate enough power to adequately operate some low-power microsensors and integrated sensors. One of the most unique and innovative aspects of this energy harvesting system is its ability to "self-reciprocate" – the perpetual production of energy without needing to consume other external energy sources."

So Interesting indeed! thanks for sharing these data.

Piezoelectric energy harvesting is not new and has already been incorporated into a variety of applications, such as dance floors that power lights and other kinetic energy devices. However, this breakthrough tech transform how we use our everyday devices.

+ Louisiana Tech University

http://inhabitat.com/piezoelectric-device-harvests-wasted-heat-energy-from-tech/

I will study that!!! So Very Thanks, SoManyWires, for your Very Constructive input Nice to read you again!

[Khwartz]

Hello Guys!

I was following the experiments and ideas of Attila Blade with his teeter and sun flower "self-running" on heat energy at very low temperature difference.

https://youtu.be/8BF0UinTAxw

https://youtu.be/4ukwkiUOEs8?list=PLukR_iBSyGXRJNo3KgZIQqJrs-cjWxQ8G

there is some impressive studies presented there.
i probably should have scrolled back and seen that youtube you posted above before earlier on before commenting.

all the best

It's okay and All The Best for you too! BTW, you brought me Truly Interesting Ideas 

[Khwartz]

SMA Mill - Hairs - Recalled - Gravity : + 2.5 cm

Using gravity to recall the SMA (nitinol) "hair", at the cooling phase.

+ 2.5 cm of radius increase for initial 12 cm radius = +20 %.

Note: the mass of the screw is far heavier than the nitinol wire.

https://youtu.be/_WLo_3jNkJI

[SoManyWires]

Nice to know you enjoyed it ^_^
Sorry, didn't get what you talk about, maybe my bad English; could you develop or provide a schematic? please.

oops, i did not notice you sent a message directed towards me.

what i meant was if you were to flip the drawing of the 'J' shaped tube, upsidedown, it seemed to me that could be similar to some attic venting systems as seen on roofs of houses.
i see a upsidedown 'J' shape in your drawing.

those types of attic vents usually have a convex shaped cap on top of it to keep out weather from getting in, and they spin from the heat created in the houses attic, as heat tries to find exit points, as the heat reaches the convex shaped cap, the heated air hits some angled fins that redirect airflow to outside of the house, to help cool the attic down. such as the roofing vent i am describing here.

a replacement idea for the angled fins on the cap, would be to put a axle inside the exhaust chamber, that has propeller type/windmill blades attached to the axle.
those blades would be able to turn the axle, and that could become recycled as stored electrical power to use later, or right away.

if those blades were strong enough, they could even withstand a small blast impact, and could have several sets of blades positioned further up inside the exhaust (firing chamber for a water based hydrogen ignition reaction perhaps).

and also it could be possible to use one axle per blade set, if the axles were positioned horizontally inside the chamber rather than vertically.
though the  force hitting each blade set would decrease accordingly after the airflow passes the lower sets.
that might be able to recycle more of the force rather than just going with one set.



i am not sure what the application of your SunMill idea is for though, having a habit of missing a lot of sometimes key information myself.
you might not be wanting to use it connected to an attic heat source.
not knowing the application, what little insight i offered above might not be of any use to your project, though if of any use, great!

its not nitol based what i mentioned above, though it might be a solution or hopefully useful somehow.

[Khwartz]

SMA Mill / Hairs / Recalled / Gravity / Mass×2: +4 cm & Faster

Using gravity to recall the SMA (nitinol) "hair", at the cooling phase.

● Mass is doubled compare to last video:

Power been proportional to the mass, we have: M2[kg] / M1[kg] = 2, thus +100 % of increase of power transfer.

● + 4 cm of radius increase for initial 5 cm radius = +80 % (to compare to +20% in the previous video):

Power been proportional to the radius, we have: 1.80 / 1.2 = 1.50, thus +50 % of increase of power transfer.

● The change of shape is 50 % faster:

Power been proportional to the frequency (1/T), we have +50 % of increase of power transfer.

● The increases of of power transfer multiplying each other we get: 2.0 × 1.5 × 1.5 = 4.5, thus 350 % more power transfer (4.5 times more powerful under the same thermal power input).


Note: the masses of the screws are far heavier than the nitinol wire.

https://youtu.be/pHeMdsqgoMw