Geothermal energy
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Geothermal energy

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Geothermal energy Geothermal energy Presentation Transcript

  • Geothermal
 Energy Scien2st:
Eamonn
D’Arcy
  • Where
is
Geothermal
Energy
used?• Geothermal
Energy
is
mainly
used
in
Italy,
New
Zealand,
Iceland,
 Japan,
the
Philippines
and
the
United
States.
• In
Iceland,
virtually
every
building
in
the
country
is
heated
with
hot
 spring
water.
In
fact,
Iceland
gets
more
than
50
percent
of
its
energy
 from
geothermal
sources.
In
Reykjavik,
for
example
(popula2on
 115,000),
hot
water
is
piped
in
from
25
kilometers
away,
and
residents
 use
it
for
hea2ng
and
for
hot
tap
water
• Seismically
ac2ve
hotspots
are
not
the
only
places
where
geothermal
 energy
can
be
found.

at
depths
of
anywhere
from
10
to
a
few
 hundred
feet
below
the
surface
virtually
in
any
loca2on
on
Earth.
• The
largest
geothermal
system
now
in
opera2on
is
a
steam‐driven

  • Once
you
get
Geothermal
Energy,
How
• If
it
is
heated
to
a
higher
temperature
by
a
boiler
it
can
be
used
in
 buildings
as
hot
water
supply.• It
can
be
used
to
heat
homes,
buildings
greenhouses,
local
resorts,
fish
 farms
and
spas• To
dry
out
fish
• De‐ice
roads,• Dehydra2ng
onions
and
garlic• Pasteurizing
milk.• Improve
oil
recovery,
• Underfloor
hea2ng,
 View slide
  • How
Does
a
Ground‐Source
Steamed
• Hundreds
of
meters
of
piping
and
coil
are
buried
underground
in
 loops.• Cold
water
is
pumped
down
an
“Injec2on
Well”
towards
the
 heated
rock.• The
water
becomes
ho]er
because
of
the
heated
rock.• The
water
eventually
starts
to
evaporate
and
turn
into
steam.• This
happens
through
naturally
occurring
"hydrothermal
 convec2on"• The
steam
will
rise
through
the
“Recovery
Well”.• 
This
“Recovery
Well”
leads
to
a
generator.• The
steam
rotates
the
fan
leaves
inside
the
generator
to
create
 electricity. View slide
  • How
Does
a
Ground‐Source
Boiled• Hundreds
of
meters
of
piping
and
coil
are
buried
 underground
in
loops.• Cold
water
is
pumped
down
an
“Injec2on
Well”
 towards
the
heated
rock.• The
water
becomes
ho]er
because
of
the
heated
 rock.• This
now
heated
water
is
quickly
pumped
out
before
 it
turns
to
steam.• The
water
will
then
flow
through
the
Recovery
Well
to
 a
storage
place.• The
storage
place
for
the
already
heated
water
will

  • Interes2ng
facts
about
Geothermal
• Comes
from
the
Greek
word
"Geo"
meaning
"earth"
and
"Therme"
 meaning
heat.
• The
temperature
is
100
degree
Celsius
three
miles
beneath
the
earth.
This
 is
an
ideal
temperature
to
boil
water
to
generate
a
steam‐powered
 electric
power
plant.
 
• For
example,
more
than
8,900
megawa]s
(MW)
of
large,
u2lity‐scale
 geothermal
capacity
in
24
countries
now
produce
enough
electricity
to
 meet
the
annual
needs
of
nearly
12
million
typical
U.S.
households
(GEA
 2008a).• The
United
States
has
more
geothermal
capacity
than
any
other
country,
 with
more
than
3,000
megawa]s
in
eight
states.

 Eighty
percent
of
this
capacity
is
in
California,
where
more
than
40
 geothermal
plants
provide
nearly
5
percent
of
the
state’s
electricity.

  • Bibliography• h]p://www.drenergysaverct.com/hvac‐systems/geothermal‐hea2ng‐cooling‐ connec2cut_free‐es2mates.ppc?gclid=CLD9sc7z7qgCFYVx5QodeU8eNw• h]p://wiki.answers.com/Q/How_does_geothermal_energy_work• h]p://www.greenprofitsguide.com/category/green‐energy• h]p://ww1.webanswers.com/home‐garden/how‐does‐geothermal‐energy‐ work‐7a56c8• h]p://www.alterna2veenergysecret.com/geothermal‐energy.html• h]p://www.buzzle.com/ar2cles/how‐does‐geothermal‐energy‐work.html• h]p://www.pier55.com/technology/energy/geothermal‐energy/• h]p://www.ucsusa.org/clean_energy/technology_and_impacts/ energy_technologies/how‐geothermal‐energy‐works.html• h]p://www.clean‐energy‐ideas.com/ar2cles/ how_does_geothermal_energy_work.html