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[DPRG] mega caps

Subject: [DPRG] mega caps
From: ed at okerson.com ed at okerson.com
Date: Mon Jan 25 17:52:36 CST 2010

Current limiting resistor?

Ed Okerson

> I'm wondering how you control the rate of discharge so it all doesn't hit
> at
> once and create a turkey bomb.
>
>
>  - 73 -
> Rud Merriam K5RUD
> ARES AEC Montgomery County, TX
> http://mysticlakesoftware.com/
>
> -----Original Message-----
> From: Rick Bickle [mailto:rbickle at intconsys.com]
> Sent: Monday, January 25, 2010 4:30 PM
> To: DeltaGraph at aol.com; dprglist at dprg.org
> Subject: RE: [DPRG] mega caps
>
>
>
> Did you calculate the required gauge of wire to adequately handle the
> current?
>
> I'm guessing you will flash plate everything within a 3 foot radius.
>
>
>
> Rick
>
>
>
>
>
> From: dprglist-bounces at dprg.org [mailto:dprglist-bounces at dprg.org] On
> Behalf
> Of DeltaGraph at aol.com
> Sent: Monday, January 25, 2010 1:00 PM
> To: dprglist at dprg.org
> Subject: Re: [DPRG] mega caps
>
>
>
> Dear Dr Evil, (or aspiring Dr Evils)
>
>
>
> OK, so 1MF cap charged to 2.7 volts  = 3.6 million watt seconds.
>
> I think you could probably cook a turkey with that. My initial guess would
> be that the turkey could have a starting temperature of -273C (absolute
> zero) and still get cooked.
>
>
>
> Since I have extra time not being an officer of DPRG anymore, I  attempted
> the calculations:
>
> Disclaimer: You might want to check my work if you decide to carry the
> experiment out with expectant dinner guests.
>
>
>
> Figuring latent heat of fusion to thaw the bird once it reaches 0C (334
> kJ/kg) plus 4.2 kJ/kg per delta degree C. I calculate for final temp of
> 80C
> (176F) and above stated 1MF capacitor charged to 2.7 volts:
>
> Bird kg x (334+ (273+80) x 4.2) = 3600 kJ
>
> Bird kg = 3.81 kg =  8.4 lbs
>
>
>
> Not a very large turkey, but with a pre-thawed turkey at say 5C. The
> calculation yields a 25lb bird can be cooked.
>
>
>
> Maybe we can try this out at tomorrows RBNO at the generator. I will
> spring
> for the bird if someone will bring the capacitor(s).
>
>
>
> Ron
>
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