Re: Strange EV Ideas

["Eric Poulsen" <epoulsen@htsinteractive.com>]

I've used mineral oil myself.  I had built a "speaker dummy load," which is
something you hook to your stereo when you want to test the power out
without actually using a speaker -- something that would drive your
neighbors nuts.

In any case, I bought some high-wattage (50W) 8 Ohm resistors built
specifically for this purpose, and mounted them inside a plastic project
box from the terminals that were mounted on top.  I filled it with mineral
oil and sealed it all up.

Mind you there wasn't any circulation or cooling, but the increased thermal
mass created by the oil effectively raised the power dissipation of the
resistors, if only for a short time.

In any case, mineral oil has a higher dielectric (insulation) rating than
air, provided you keep the contaminants out.

At 11:12 PM 10/29/99 , you wrote:
>
>I've been trying to find some interest in some strange EV ideas I've had
>and I figure that maybe I can get interest from people if I just post them
>to the list.. :P
>
>The first one.. if you took a generator and put it on your axle.. hehehe..
>ok I'm kidding.. serioiusly.. read on.. the real ideas sound strange
>enough to most people.
>
>
>Idea #1)
>	Why run a liquid cooling system through a heatsink on an ev
>controller when you get more heat transfer by actual immersion of the
>electronics gear into a non-conducting liquid?
>
> I didn't actually come up with this myself.. the idea came from a
>web site in which "Dr. Freeze" keeps his motherboard complete with
>attached cards under about 8" of mineral oil. He chills the setup to very
>low temperatures using a air conditioner coil and is then able to
>seriously overclock his computer chip.
>
>Taking this idea I have found that you really can run car tuners and
>amplifiers while they're immersed in mineral oil. I didn't actually run
>the oil through a liquid chiller but I'm sure it's possible. The best
>liquid for this is made by 3M and is used for cooling mainframe computers
>as I understand it. 3M's liquid costs around $150/gallon. However plain
>mineral oil will work.
>
>I don't know yet what would happen at 280volts with 1000amps.. any ideas?
>
>Idea #2)
>	Use aquarium heaters as battery heaters.
>
>	There's some aquarium heaters that I understand are in the form of
>a flexible wire that runs throughout the bottom of the tank. I believe
>they're called substrate filters.
>
>	What if you used these as a way to wrap the heater around the
>batteries in order to heat them or at least keep them warm?
>
>
>Hmm.. I have more but I haven't written them down as of yet so I can't
>remember right now..
>		
> 
________________________________________________________
Eric Poulsen
Application Developer / ÜberGeek

HTS Interactive Media Division
http://www.htsinteractive.com
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