Tapping Renewable Energy Beneath Our Feet

Transcription

Tapping Renewable Energy Beneath Our Feet
Tapping Renewable Energy Beneath Our Feet
G
A Comfortable Green Energy Solution
❚ Geothermal heating and cooling saves energy, reduces
fossil fuel use, and slashes carbon emissions.
❚ Geothermal heat pumps are truly a “50-State” renewable
energy technology. Geothermal systems harness on-site
renewable energy available across America, providing
energy savings for new construction and retrofits.
❚ Geothermal systems are a source of reliable energy that
doesn’t need new power plants or transmission lines.
❚ Geothermal heat pumps are “Made in the USA”
by an innovative industry that is creating thousands of
local, skilled jobs across America. From manufacturing
through system design, distribution and installation,
the geothermal heat pump industry is an engine
of our economy.
❚ The CO2 reduction benefits of geothermal heat pump
systems are substantial compared to traditional air-to-air
heat pumps or natural gas heating systems with electric
air conditioning. They shrink the carbon footprint of a
typical American home by nearly 50%.
❚ Higher first cost is associated with excavation or drilling
to install ground loops. With federal 30% residential / 10%
commercial tax credits — plus various state and utility
rebates around the country — payback for the higher cost
of typical installations compared to standard heating and
air conditioning equipment is typically 5 to 8 years.
eothermal heat and cooling systems work in
harmony with the environment by capturing the
renewable solar energy stored beneath the earth’s
surface. They can make significant contributions to
a cleaner environment by saving energy consumption,
cutting the use of fossil fuels, slashing air pollution and
reducing our impacts to climate change.
Geothermal heat pumps
systems effectively address
one of the most hungry
consumers of U.S. energy.
Buildings dominate the
nation’s energy use,
devouring over half of our
electricity and natural gas.
More than 70% of average
energy demand for a typical
single family home is to meet
heating and cooling (thermal)
needs. With a geothermal
heat pump, that energy use
can be cut by 40% to 70%,
reaping huge savings on
your utility energy bill. And
geothermal heat pumps are
a renewable, clean energy
source that we can all use
without the need for
additional expensive,
fossil-fueled power plants
and intrusive electric
transmission lines.
Geothermal heat pump systems
are “Made in the USA” by an
innovative industry that is creating
thousands of jobs across America.
Vertical loop
Where space is limited,
the sealed piping loop is
inserted in boreholes from
150 to 400 ft. deep.
Horizontal loop
Where space allows, loop
the sealed piping loop
Horizontal
is buried in trenches from 3 to 6 feet deep.
Where space allows, the sealed piping loop
is buried in trenches from 3 to 6 feet deep.
According to the U.S. Department of Energy and the U.S. Environmental
Protection Agency, geothermal heating and cooling systems are the
most environmentally friendly way to control the indoor environments
of homes, businesses, and institutional spaces of all sizes. With additional
equipment, they can be used for essentially free hot water — and even
for heating floors and swimming pools.
How Do They Work?
Geothermal heat pump systems can be sized to heat and cool any
building, large or small, in any climate.
Optional Intermittent ‘Bleed’
Well water loop
Horizontal loop
Where groundwater is adequate, well
Wherecan
space
allows,
the sealed
piping
water
be used
directly
without
a loop
Vertical
loop
is buried
in trenches
sealed
piping
loop. from 3 to 6 feet deep.
Where space is limited,
Vertical loop
the sealed piping loop is
Where space
is limited,
inserted
in boreholes
from
the sealed
loop is
150
to 400piping
ft. deep.
inserted in boreholes from
150 to 400 ft. deep.
Vertical loop
Where space is limited,
Pond
loop
the sealed piping loop is
When
a
water
body isloop
Well
water
inserted in
boreholes
from
available,
theft.
sealed
150 to 400
deep.piping
Where
groundwater
is
adequate, well
Well
water
loop
loop
can be
submerged
water can be used directly without a
beneath
the surface.
Where groundwater
sealed
piping loop. is adequate, well
water can be used directly without a
sealed piping loop.
A series of plastic pipes — called ground loops — are buried beneath
Standing
Column
Well
the
earth’s surface
where temperatures
are constant from 40° to 80°
F Where
throughout
the year
depending
upon where you live. The pipes are
near-surface
bedrock
is
available
and and
groundwater
is of to the geothermal heating and cooling
sealed
tight,
connected
limited quantity and adequate
system
inside the building. Water circulates through the underground
quality. With adequate well length,
pipes.
There
five types
well water
canare
be directly
usedof ground loop installations, shown at left.
instead of the sealed piping loop.
During the summer months in cooling mode, unwanted heat indoors
is transferred outside through the water in the pipes for cooling by the
earth. The cool water is then circulated to the geothermal system indoors
to provide efficient air conditioning. During the winter months in
heating mode, the process is reversed. The earth heats the water
circulating through the pipes, which is transferred to the geothermal
system indoors to provide comfortable space heating. Hot water can
also be provided for little or no additional monthly energy cost.
Optional Intermittent ‘Bleed’
Standing Column Well
Where near-surface
bedrock is Well
Standing
Column
available and groundwater
of
Coolingis Mode
Optional Intermittent ‘Bleed’
Where near-surface
is
limited
quantity andbedrock
adequate
availableWith
andadequate
groundwater
of
quality.
wellislength,
limited
quantity
adequate
well
water
can beand
directly
used
quality. of
With
well length,
instead
theadequate
sealed piping
loop.
well water can be directly used
instead of the sealed piping loop.
Heating Mode
Optional Intermittent ‘Bleed’
Well water loop
Standing Column Well
Where groundwater is adequate, well
water can be used directly without a
sealed piping loop.
Where near-surface bedrock is
available and groundwater is of
limited quantity and adequate
quality. With adequate well length,
well water can be directly used
instead of the sealed piping loop.
Pond loop
Pond loop
When a water body is
available, the sealed piping
Whencan
a water
body is
loop
be submerged
available,the
thesurface.
sealed piping
beneath
loop can be submerged
beneath the surface.
Optional Intermittent ‘Bleed’
Standing Column Well
Pond
loop bedrock is
Where near-surface
available
andbody
groundwater
is of
When
a water
is
limited
quantity
and
adequate
available, the sealed piping
quality.
With
adequate well length,
loop
can be
submerged
well
water
can
be directly used
beneath the surface.
instead of the sealed piping loop.
Geothermal exchanGe orGanization
www.GeoExchange.org | (888) 255-4436

Similar documents