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From YouTube: Larry Dobson 2
Description
Vogiggogogofif
A
Ok,
Larry
tell
me
about
the
main
design
parameters
of
this.
Just
the
main
features
like,
for
example,
preheating,
the
fuel
preheating,
the
air
combustion
air
things
like
I
tell
me
tell
me
some
of
the
main
features
just
describing
this.
This
burner,
which
looks
like
we've,
got
the
here's,
a
diagram
of
it
and
see
on
the
computer.
Is
it
on
the
computer
too
yeah.
A
B
B
So
you
have
the
sealed
hopper
here
with
the
fuel
on
it
and
that
can
be
extended
up
to
incorporate
as
much
fuel
as
you
want.
The
the
fuel
drops
into
with
a
vertical
side,
so
it
can't
be
hung
up.
One
of
the
big
problems
with
fuel
feeds
and
gasifiers
is
that
they
have
a
major
constriction
where
the
fuel
breaches
this
one.
B
A
B
The
gas
goes
up
into
the
combustion
shell,
which
is
a
an
annular
ring
around
this
cylindrical
configuration
that
preheats
the
combustion
in
the
gasification
air.
The
gasification
here
comes
up
from
the
bottom
is
heated
by
the
shell
surrounding
the
the
ash
pit
in
the
hot
gases
that
are
evolved,
and
then
it's
further
heated
by
the
combustor,
the
combustion
shell
and
it
goes
up,
and
then
it
starts
heating,
the
fuel
inside
by
this
ceramic
shell,
that's
the
hopper
shell
as
well,
and
that
hot
air
then
enters
in
the
gasification
reaction.
B
So
by
having
everything
he'd,
you
have
a
very
even
creation
of
the
gas,
very
even
combustion,
and
then
it
goes
into
the
heat
exchanger
shell,
which
takes
the
heat
out
of
it.
So
you
have
these
three
process:
gasification,
combustion
heat
exchanger
that
are
separated
and
controlled
separately.
So
you
have
maximum
control
over
the
whole
operation.
Tell.
A
B
The
water,
the
water
is
in
the
thinner
shell,
if
you
can
see
three
shells
here
of
of
the
heat
exchanger.
These
are
our
a
spiral
configuration
that
goes.
The
gas
has
to
go
in
this
spiral,
configuration
as
it
goes
out
as
the
gas
goes
by
the
water
heat
exchanger
shell,
it
heats
the
water
as
it
cools
and
drops
and
ends
up
going
out.
The
bottom
of
the
heat
exchanger
shell,
while
the
water
comes
in
cool
at
the
bottom,
and
it
goes
in
the
spiral
and
comes
out
of
pot
in
the
middle
at
the
top
and.
B
Okay,
so
you've
got
in
the
gas
that
is
fully
burned.
This
serves
two
functions:
it's
either
a
gasifier
aura
or
a
combustor
water
heater
and
the
gasifier
will
heat
the
water
as
well.
If
you
don't
have
combustion,
but
with
it.
Let's
look
at
the
combustion
first,
so
you've
got
fully
combusted
gas
that
has
essentially
carbon
dioxide,
nitrogen
from
the
air
and
water
vapor
and
water
vapor
as
a
tremendous
amount
of
latent
heat
in
it
from
turning
it
from
water
into
steam.
B
B
A
B
A
B
B
Takes
the
h2o,
the
hydrogen
and
the
oxygen
and
breaks
it
down
into
hydrogen
and
carbon
monoxide,
which
is
a
fuel,
and
it
also
because
water
steam
is
a
bi
polar
molecule
that
absorbs
and
radiates
radiant
energy,
whereas
nitrogen
oxygen
hydrogen,
don't
they
don't
absorb
and
radiate
so
you
have
with
steam.
It
spreads
the
heat
very
quickly
to
all
of
the
gases
and
then
for
combustion.
It
does
the
same
thing
in
it
shortens
the
flame
path.
It
creates
a
much
cleaner
burn,
so
you
actually
benefit
from
having
that
steam
in
in
your
process.
B
B
Both
you've
got
green
wood
can
have
fifty
percent
of
the
weight
of
the
wood
can
be
water
and
then
the
dry
wood,
when
it
burns,
can
create
over
fifty
percent
water
from
that
combustion
process.
So
you've
got
a
tremendous
amount
of
latent
heat
available
from
that
steam
and
it
also
acts
as
a
catalyst
and
creates
a
higher
quality
wood
gas.
So.
A
B
Long
as
you
have
sufficient
heat
in
the
process
evenly
distributed,
which
the
steam
contributes
to
and
you
and
you
introduce
preheated
air
so
that
the
combustion
is
always
up
at
a
high
temperature,
no
matter
where
it's
coming
from
in
the
system,
then
you
have,
everything
is
fully
burned.
You
get
proper
mixing
and
you
get
excellent
efficiencies
from
this
whole
system.