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Date: Thu, 9 Jun 2005 11:59:52 -0600
From: Bob White <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: coolant leak
Message-Id: <20050609115952.6e89b195.bob@bob-white.com>
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Hi Dave,

Have you done this experiment Dave?  At any given temperature, any
liquid has a vapor pressure of some amount.  If the vapor pressure is
above ambient pressure, you will get boiling.  Lower the temperature
and the vapor pressure will go back to what it was for that
temperature.  With the balloon in place I would expect to go back to
the initial condition because it's a closed system.

Bob W. (Not doing any experimentation today.)


On Thu, 9 Jun 2005 08:42:43 -0700
David Leonard <wdleonard@gmail.com> wrote:

<snip>
>  Al, although I find your tone a little condescending, I am sure that you 
> don't mean it.
>  To use your example try the following experiment. Use the same bottle with 
> the balloon over the top. But first put a little 50/50 coolant in the 
> bottle. Heat the bottle, but you must boil a little of the coolant. Now cool 
> the bottle. The balloon will never go all the way down. Not all of the vapor 
> will go back into liquid form, there is a vapor pressure below which it will 
> not drop.
> 
> -- 
> Dave Leonard
> Turbo Rotary RV-6 N4VY
> http://members.aol.com/_ht_a/rotaryroster/index.html
> http://members.aol.com/vp4skydoc/index.html
> 


-- 
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