Date: Fri, 20 Aug 1999 02:11:52 -0400
Reply-To: "Jason M. Yasment" <vanagon@NYCAP.RR.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "Jason M. Yasment" <vanagon@NYCAP.RR.COM>
Subject: Re: More fridge help needed.
Content-Type: text/plain; charset="iso-8859-1"
Isn't easier just to get another regulator for $15 try it out and if it not
the source at least you have a new regulator with a warranty?
Jason M. Yasment
http://home.nycap.rr.com/jyasment/
----- Original Message -----
From: Alfred Bagdan <abagdan@POWERSURFR.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, August 21, 1999 1:58 AM
Subject: Re: More fridge help needed.
> ----- Original Message -----
> From: Anthony L. Mourkas <frankenstein@TELPLUS.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Thursday, August 19, 1999 8:34 PM
> Subject: Re: More fridge help needed.
>
>
> > >> So which is it? Does one measure the difference in water levels from
> one
> > >> side of the "U" to the other after application of pressure? Or does
> one
> > >> measure the total distance that the gas has lifted the liquid from a
> zero
> > >> point on one side of the "U"?
> >
> > >It is the difference in the height of the 2 columns, not how high one
> column
> > >rises.
> > >You now have 22 inches of pressure in your gas lines, the way you did
it.
> > >Does your fridge light and how about the flames on the stove?
> >
> > Well thanks all for the science lesson. Guess I had better perform that
> > pressure adjustment again!!!
> >
> > I accept the decision but am still unclear as to the scientific
> > explanation as to why it is the difference in column heights rather than
> > the height difference in one column. If anyone could educate me further
> > my enquiring mind would like to know.
> >
> > Thanks,
> >
> > Tony
> >
> > 1984 Vanagon Westfalia
> > Anthony L. Mourkas
>
>
> Hi Tony
>
> Well, here goes another explanation.
>
> Suppose you measure the vertical height of the columns of water from the
> very bottom of the U tube. The left side which is open to the atmosphere
> has a column height of 16 inches and the right side has a vertical column
> height of 5 inches. Now since the water is not moving anymore, the forces
> in the water must balance, that is the force to the right must be exactly
> equal to the force to the left. So at the very bottom the forces are
equal
> as well. What are the forces at the bottom? Well look at the equation
>
> Atm. pressure + 16 inches of water = propane pressure + 5 inches of
water
>
> solving,
>
> Atm. pressure + 11 inches of water = propane pressure.
>
> By convention, only the difference of pressure is usually cited, which
would
> be the equivalent pressure exerted by a column of water 11 inches high.
>
> Just for your reference, the atmospheric pressure is about 14.7 psi
(pounds
> per square inch) and 11 inches of water exerts a pressure at the bottom
> of the column of about 0.40 psi. the actual propane pressure is approx.
> 15.1 psi, but gauges usually measure the difference between actual
pressure
> and atmospheric. Your tire gauges also measure the difference in the
> pressures.
>
> Hope this helps
>
> Alfred
>
| 
