Air Temp Nitinol

[gadgetmall]

I recently bought three varities of Nitinol Wire with reaction temps as follows . one is 115 degrees F the next is 98.6F and the third is the new AIR TEMP 70 DEGREES F . they all have infinate memory capibilities as long as the stress and memory temp parameters are met
mY  plans are to make a thermobile type motor with shafts to hold multiple pairs of Nitinol Wheels and connect the shafts to either a small motor/generator or put magnets on the shaft and capture the electricity with coils. The Nitinol can be Bought Cheap as a 300 foot roll cost 99 dollars . and 5 foot sections for 10 dollars . any one want to join in and get the Nitinol motor gen project ideas are welcoms . also any comments welcome . The "Heat" motor will use plain cool water and the outside air temp greater than 69degrees F to run the motor using AIR TEMP NITINOL. there will no need to heat up water as the air itself will supply the heat while the task will be to keep the cold side cooler so a 20 degree differantionl to run the motor . Now here on the East Coast i have recorded 116 degree air temp as we are in a Heat wave so heat is not the problem .Keeping the cool water might be . Possible using the earth ground as an insulator on the cold side of the motor and exposing the hot side to the air .
You can watch a Lecture about the properties and uses here .. http://www.youtube.com/watch?v=rZpZhSdgdSI&feature=endscreen&NR=1
Gadget

[gadgetmall]

Here is a Design that will convert Nitinol to mechanical Energy (motor) This design ternimates to a crankshaft . you could use this to power an electric generator . This type of Nitinol wire can lift 30 pounds 30 inches with just a 30 degree F shift in tempature differential .
http://www.pacificsites.com/~snyder/Ebay/Nitinol/high_efficiency_power_conversion.htm

This wire is Availible on ebay for 19.95 us for 40foot roll . http://www.ebay.com/itm/330696040468?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Gadget Al

[tak22]

Hi Gadget,
Thanks for bring our attention to the availability of air temp Nitinol. Here's a link for a company that I've had good service for purchasing from that sells the low temp wire: http://www.ebay.ca/itm/Air-Temp-Nitinol-SHAPE-MEMORY-Wire-magic-tricks-robotics-5-feet-/251012885447?pt=LH_DefaultDomain_0&hash=item3a7188abc7


If I was working with Nitinol I'd work on a linear drive instead of rotary, you can now get highly efficient linear generators that operate on as little as a 0.5 in stroke.


tak

[gadgetmall]

Hello tak22 . I thought about linear however using just plain Nitinol wire we don't get much movment Linearly like 8 percent not like the Wave generators i have read about . Thats why robotics and such use nitinol wire for auctators and such . You can make the throw much more than 8% IF you use Nitinol Spring loops .I have yet to find a nitinol spring more than 6mm for less  than 21 dollars. Also they dont make it in air temp Nitinol and the reaction of other Nitinol springs and helix are close to the boiling point.I see your poing though we could tie one of those squeze generators like you see on those russian emergency lights .Once nitinol Springs are made with Air temp nitinol that will be a good option.here is a link about nitinol and linear operations . http://cimar.mae.ufl.edu/CIMAR/pages/thesis/santiago_jr.pdf

[tak22]

Thanks for the article, I dug around my files and found the link for the linear alternators I mentioned, they range from 100w to 10Kw: http://www.qdrive.com/UI/ProductsListing.aspx?ptype=2&mcid=115&pcid=115&ccid=116
A little gearing should overcome the 8% limit quite easily.


tak