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Author Topic: Air Temp Nitinol  (Read 169211 times)

Offline dukehazard

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Re: Air Temp Nitinol
« Reply #120 on: February 27, 2013, 03:42:39 AM »
 Hope you guys did not mysteriously disappear   

Free Energy | searching for free energy and discussing free energy

Re: Air Temp Nitinol
« Reply #120 on: February 27, 2013, 03:42:39 AM »

Offline luke888

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Re: Air Temp Nitinol
« Reply #121 on: August 17, 2013, 01:22:42 AM »
Hi, I'm new to all of this, and I have enjoyed reading the whole thread. Did you manage to get anywhere with any of your experiments Gadget? It seems odd that its all gone quiet for months - It looked like you were getting there!

Hope to hear from you soon. Thanks,

Luke

Offline ballbag

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Re: Air Temp Nitinol
« Reply #122 on: January 19, 2015, 01:34:37 PM »
Yeah, I'd like for this thread to be active again too.  Just awaiting my batch of nitinol so will report on any experiments I make soon.

Free Energy | searching for free energy and discussing free energy

Re: Air Temp Nitinol
« Reply #122 on: January 19, 2015, 01:34:37 PM »
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Offline sm0ky2

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Re: Air Temp Nitinol
« Reply #123 on: March 17, 2015, 02:52:50 PM »
It seems that the (avg) price of Nitinol, has dropped well below the $200/lb estimated in the original tech video from Berkley

http://www.aliexpress.com/w/wholesale-nitinol-wire.html

I see no logical reason, why we are not manufacturing a large quantity of these Heat-Conversion Engines.

Online Paul-R

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Re: Air Temp Nitinol
« Reply #124 on: March 17, 2015, 04:35:04 PM »
It seems that the (avg) price of Nitinol, has dropped well below the $200/lb
We should be able to  do  better. The stuff is mass produced for dentists for  those wire braces used to bring teenage girls to  the edge of   despair.

Free Energy | searching for free energy and discussing free energy

Re: Air Temp Nitinol
« Reply #124 on: March 17, 2015, 04:35:04 PM »
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Offline sm0ky2

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Re: Air Temp Nitinol
« Reply #125 on: January 11, 2016, 08:07:02 AM »

Online ramset

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Re: Air Temp Nitinol
« Reply #126 on: February 21, 2017, 11:10:26 AM »
https://www.youtube.com/watch?v=oKmYqUSDch8



would seem an off balance wheel could be incorporated ...............

gadget's original inspiration from Berkeley

https://www.youtube.com/watch?v=rZpZhSdgdSI&feature=endscreen&NR=1

Chet

Free Energy | searching for free energy and discussing free energy

Re: Air Temp Nitinol
« Reply #126 on: February 21, 2017, 11:10:26 AM »
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Offline gotoluc

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Re: Air Temp Nitinol
« Reply #127 on: February 21, 2017, 07:52:16 PM »
Don't know if this has been posted here yet?


Link to video: https://www.youtube.com/watch?v=8-dCIkJAjyM&spfreload=10

Online ramset

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Re: Air Temp Nitinol
« Reply #128 on: February 21, 2017, 08:35:53 PM »
Luc
back when this was done [5KW nitinol engine] it was very pricey and no one was sharing the Why's or How Too's
a lot has changed price wise ,and hopefully we can make all manner of NiTinol shapes and sizes too ?

some links forwarded from a member here !

https://www.youtube.com/watch?v=atVSxvbiPg0

https://www.youtube.com/watch?v=5X0EKbpLuRc

Or simply start here
http://www.bing.com/videos/search?q=rubber+band+heat+engine&view=detail&mid=509A4F229BE8077BA87A509A4F229BE8077BA87A&FORM=VIRE
a nitinol bhaskara wheel
as a test bed
but with more mass in motion [no rubber bands] just off the shelf nitinol wire to start.

all comments welcomed and appreciated

respectfully
Chet K

Free Energy | searching for free energy and discussing free energy

Re: Air Temp Nitinol
« Reply #128 on: February 21, 2017, 08:35:53 PM »
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Offline sm0ky2

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Re: Air Temp Nitinol
« Reply #129 on: February 21, 2017, 09:19:37 PM »
It is much more efficient to use the mechanical energy of
the Nitinol directly as the driving force.
Rather than using it indirectly to utilize gravity.


Linear actuators could rotate a crankshaft
For example


This stuff needs only very small temperature differences
Which puts it in its' own category of heat engine.
And the extreme nature of the output defines it in a
category separate from the Carnot cycle.


I think the only thing holding us back was the price.
If that's gone down, we can design a limitless array of machinery.


Online ramset

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Re: Air Temp Nitinol
« Reply #130 on: February 21, 2017, 09:30:00 PM »
yes cost prohibitive in the early days ,perhaps not as much now [I have read 10 fold reduction in costs] ?

This is supposedly an MIT tutorial on the science behind Nitinol

https://www.youtube.com/watch?v=2YVwpBAiA1A

all comments welcomed and appreciated

Chet K


Free Energy | searching for free energy and discussing free energy

Re: Air Temp Nitinol
« Reply #130 on: February 21, 2017, 09:30:00 PM »
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Online ramset

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Re: Air Temp Nitinol
« Reply #131 on: February 21, 2017, 11:39:14 PM »
another amazing heat driven engine potential .
[all such gases,fluids or materials need to be considered/evaluated for highest potential in ambient temps ]

 go to 4.35 for the "work" says from Zero to 1000 PSI in a few seconds using acetone .

@ will test this claim this week

https://www.youtube.com/watch?v=0Etys8Rt7l8.
« Last Edit: February 22, 2017, 04:13:31 AM by ramset »

Online ramset

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Re: Air Temp Nitinol
« Reply #132 on: February 22, 2017, 05:50:52 PM »
Other "SMA Or shape metal alloys

http://web.archive.org/web/20030605085042/http://www.sma-inc.com/SMAPaper.html
link from Ash's old thread here
http://www.energeticforum.com/renewable-energy/10592-rubber-band-motor-nitinol-springs.html

to note: NiTinol has been tested in heat engines for dependability with seeming limitless cycles 81 million in
one example,  which after teardown was found to be stronger and more robust than when first installed.
another curious attribute !

all comments welcomed and appreciated

respectfully
Chet K
PS
Gwandau's wheel which was actually a friend of Gwandau in Sweden as I recall , was said to run [as an oddity no power] ?
would be a very inexpensive test bed for a NiTinol  drive IMHO

Offline sm0ky2

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Re: Air Temp Nitinol
« Reply #133 on: February 22, 2017, 07:00:54 PM »

Offline Reiyuki

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Re: Air Temp Nitinol
« Reply #134 on: February 23, 2017, 03:00:43 AM »
The real test for Nitinol would be to graph how much force is exerted from a specific thermal change in a nitinol spring.

Something like:
* Acquire a nitinol spring with a known mass (for example, 10g).
* Attach the spring to a fixed weight and place both in a sealed air-tight container.
* Add a heating element, hair dryer, hot-plate, or other type of heater to the chamber, along with a small fan to recirculate air.
* Graph the change in the mass's height with changes of temperature in the chamber.  That temp gradient is dependent on what variety Nitinol you purchased.

After that is all done, take the mass of the spring and temperature gradients to get joules input to the system. (0.20 cal/g * deg. C for Nitinol)
Graph that against the change in height of the test mass (convert ft-lbs to joules).
The result should look like a 'joules input vs joules output' COP chart spanning a temperature range.

If Nitinol is as magic as it sometimes seems, there should be a small window on that graph where Joules output exceed Joules input.

 

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