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From YouTube: Larry Dobson - Gasifier Burner
Description
Ckgififi
A
B
Two-Thirds
of
the
weight
is
water
and
get
that
water
condensed
back
out
of
the
exhaust
to
give
you
super
high
efficiencies
and
super
cleanliness
and
there's
a
lot
of
parameters
involved
in
that.
But
this
means
that
most
of
the
waste
materials
from
agriculture
and
forestry
and
and
local
tree
trimmers
and
whole
variety
of
sources
of
municipal
waste
burnable
materials
can
be
burned.
B
Gasified
very
cleanly
the
gas
used
for
furnaces
for
internal
combustion
engines
and
and
we
can
compete
with
other
sources
of
alternative
energy.
As
far
as
cleanliness
and
efficiency
goes,
the
concentration
of
energy
of
a
biomass
system
like
mine
is
really
at
least
10-fold
and
20
fold
times
the
payback
period
of
solar
and
other
systems
that
are
much
larger,
because
you've
got
a
lot
of
heat
involved
in
the
stored.
B
So
I
have
designed
a
specific
gasifier
for
residential
size
and
little
larger
that
that
takes
all
of
these
concepts
and
turns
them
into
the
most
elegant
of
configuration,
which
is
concentric
and
spiral.
Shells
that
feedback
the
energy
into
the
incoming
gasification
air
so
that
the
quality
of
the
gas
is
much
higher
and
and
then
distributes
it
out
into
the
heat
exchanger
in
a
way
that
there
is
maximum
utilizing
of
gravity.
B
B
You
get
the
greatest
flow
patterns
next
to
the
heat
exchanger
surface,
which
creates
a
much
more
efficient
heat
exchanger,
and
then
it
condenses
the
moisture
out
of
the
fuel
out
of
the
exhaust
and
you
get
all
of
that
heat
of
vaporization
back
and
that
can
be
tremendous
amount
because
for
every
pound
of
fuel,
say
half
of
it
to
third
of
it
is
water
and
then
from
the
bone
dry
fuel.
That's
left
a
half
of
that
turns
into
water.
B
So
you
got
say:
three
quarters
of
your
exhaust
is,
can
be
condensed
out
of
the
steam
back
into
water
and
you
get
all
of
that
heat
of
vaporization
back.
You
give
much
higher
efficiencies
up
into
the
ninety
percent
and
with
this
configuration
the
gravity
stratifies
the
gases,
so
that
when
you
turn
it
down,
you
get
higher
efficiencies
rather
than
lower
efficiencies
with
the
present
systems
and
you
get
much
greater
turndown
ratio.
So
you
can
go
from,
say:
5,000,
BTU,
an
hour
up
to
150,000
with
one
system.
A
B
B
Exhaust
temperatures
are
generally
four
to
six
hundred
degrees
Fahrenheit,
whereas
mine
are
say
a
hundred
and
thirty
to
200,
and
the
turndown
ratio
of
most
gasifiers
is
maybe
two
to
one
or
three
two
one
where
I
can
get
20
21
and
the
fuel
standards
that
they
require
are
much
more
stringent
for
gasifiers.
It's
very
fuel
specific.
You
have
to
have
dried
chips
of
certain
configuration
without
fines
in
them,
or
you
can,
and
they
generally
don't
even
work
on
pellets.
A
B
Well,
the
modularity
of
this.
This
is
a
prototype
design
that
will
find
out
a
tremendous
amount
of
hard
data
on
temperatures
and
burn
parameters.
Gasification
parameters
that
we
can
design
more
specifically
and
and
and
hone
in
on
the
modularity
as
well.
At
this
point,
I
have
three
modules
that
can
be
replaced
and
interchanged.
B
The
one
is
the
the
hopper,
the
the
whole
gasification
system,
which
is
broken
down
into
the
stainless
steel
components
down
in
the
bottom
and
the
ceramic
components
on
the
top,
that
of
the
combustion
module
and
the
heat
exchanger
to
preheat
the
year,
and
those
are
two
separate
configurations
you
can
replace
the
ceramics
and
then
the
heat
exchanger
is
a
spiral,
cylindrical
path,
that
the
hot
gases
take.
Two.
In
this
case,
it's
heating
water
can.
A
B
A
monotube
does
not
lend
itself
to
the
specific
directive
of
creating
a
flow
pattern
that
has
to
go
in
a
spiral
configuration
as
it
as
the
hot
gas
is
cool.
They
go
down
and
and
separate
by
gravity
so
that
you
have
the
hottest
gases
recirculate,
so
to
speak
in
the
convection
channels
and
the
coolest
gases
go
down
next
to
the
heat
exchanger
surface,
where
the
water
is
going
up
next
to
the
heat
exchanger
service
and
you
get
maximum
heat
transfer
yeah.