Louis,
I don't know of any plans for SVO burning stoves but
we have been using a very simple wick type burner with
WVO to provide process heat for our WVO filtering and
I don't see why it could not be adapted to other
heating needs. I wonder if it might even work to burn
the glycerin byproduct of biodiesel production.
The basic burner itself is simply a length of auto
exhaust tube (we use 2") with two 45 deg. bends six
inches apart to form a \____/ shape. One end can be
left longer and bent to 90 deg. to form the chimney or
several burners can be served by a single larger
chimney. An air chamber can be constructed around the
units but if you intend to use them as a heat source
for liquids heat should only be transferred from
beyond the burner area since if the metal tube around
the wick cannot warm up enough efficiency suffers
substantially. The wick is a length of 5/8 inch or
larger diameter fiberglass "rope" gasket which is
normally used to seal wood stove doors. Start with a
6" piece and experiment with trimming it until you
find a length which produces a clean exhaust after the
burner has reached full temp. This most efficient
length will depend mostly on the diameter of your tube
and the draft created by your chimney. This wick is
placed in the bent tube with one end an inch or so
from the inlet end of the tube.
The SVO must be kept warm enough to flow but should
remain at a stable temperature or the viscosity will
change necessitating constant attention to the feed
flow rate. We use a gravity feed and a small needle
valve to regulate the oil flow rate. A felt fuel oil
filter is placed in line and a 1/8 id flexible copper
pipe is routed from the oil tank to the top of the
burner mouth and positioned so that the oil dripping
form it falls next to or in front of the wick end. We
drill a small hole on the top of the burner tube and
route the oil feed pipe through this to help maintain
a stable position.
That is basically it as far as construction of the
burner. It is surprising how much heat a single burner
will produce once it gets the oil which accumulates in
the bottom of the bent tube burner heated up. For more
output we have welded groups of 4 together in a
diamond pattern to produce a larger burner. On of our
group is planning on building a "bank" of 200 to
convert his maple sap evaporator to SVO. I am sure
there are other possibilities. A single burner unit
can cleanly combust around 1/2 cup of SVO per hour
with a good draft.
CAUTIONS!!!!!!
#1 If you don't get a clean burn and black
smoke or carbon bits are coming out of your "chimney
pipe" you are not only wasting fuel and making
pollution you are also accumulating carbon and
uncombusted oil in your chimney and a risk of it
catching fire and this fire spreading exists. I don't
think I would trust an old masonry chimney regardless.
#2 If you are careless at setting your oil
flow, your SVO viscosity changes, or your flame blows
out a puddle of SVO will accumulate under your burner
and a possibility of spreading fire exists. At the
very least place a smoke detector close to any stove
you make using this burner and invest in a good fire
extinguisher. Experiment with the burner in a safe
place and get to know it well before you leave it
unattended.
I would be very interested to know the results if
anyone tries to use this to burn glycerin biodiesel
byproduct.
If anyone further develops the simple burner please
share the info freely.
What goes around comes around.
Dana
> ----- Original Message -----
> From: "Louie Pelletier" <[EMAIL PROTECTED]>
> To: <biofuel@yahoogroups.com>
> Sent: Monday, November 26, 2001 5:35 PM
> Subject: Re: [biofuel] Cornburning Stoves
>
>
> > the kernals poping before they burn would drive
> > anyone crazy. i sure would know if there is a
> stove or plans
> > out there to burn WVO.
> > LOUIS
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