Date: Thu, 12 Jan 95 8:55:54 PST
Sender: Vanagon Mailing List <vanagon@vanagon.com>
From: Steve Johnson <sjohnson@pcocd2.intel.com>
Subject: Re: The water heater project
So L.S.Griffiths@physics.salford.ac.uk says:
> a heater box exhaust tube - without the heater box shroud and fins.
> I am going to weld a water tight tube around this J-tube as below:
>
> J tube \ ___
> / water tight tube
> out__|_____________ /
> \_|__________|___
> |__________|_
> in
>
> Then (change of tense) add an inlet tube at the bottom towards the
> rear of tube and an outlet tube at the top towards the front of the
> tube. We thought that the cold water should enter the water box as
> far away from the exhaust port (of #3) as possible to minimise exhaust
> tube cooling. Cooling the exhaust might result in large exhaust
> pressure difference for number 3 cylinder - something to think about.
>
> Ok so then fit a water pump (electric or fan belt driven) obtained
> from a junk yard to power the water around. Then two 15mm copper house
> radiator pipe the water to and from the cab. In the cab fit an
> all-in-one radiator and fan unit from a, you guess it, small Italian
> car. Seriously all small water cooled FIATS seem to have these nice
> little water heater units in the engine bay that consist of a small
> radiator and boost fan in a nice little box. Connect the copper
> pipes to the in and out tubes on the FIAT radiator and mount it
> somewhere under the dash board and err, maybe bingo you have a toastie
> bus in winter. Well I'll let you know if it works.
>
> Some other points to note are that you will need a header tank in the
> engine bay to "let off steam" and don't forget that foam lagging round
> the copper pipes. Don't worry about boiling in Summer, just drain the
> water off coz you'll not need the heater in summer.
>
I realize this is my third response to this thread, but fingers just love to
hit that send key. ;) Anyway, I just realized that this system might be a
solution for those with air-cooled Type II's that want to have heated water/
showers in their beasts similar to Dave Garths magnificant system. I think
alot of people will be interested in your results Lee.
Good Luck!
Steven
sjohnson@pcocd2.intel.com
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