Geothermal Heat Pumps

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• Geothermal Heat Pumps

A Proven Renewable Energy Technology
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While Earth travels through Space
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it Absorbs Energy from the Sun
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This natural Energy Collection and Storage System
captures nearly half of the Solar Energy falling
on Earth
thus maintaining a nearly Constant Temperature
throughout the year just below the surface
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Water is an incredibly efficient medium for
transporting Thermal Energy
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Geothermal Heat Pump Systems combine Sun, Earth
and Water using proven technology
to create the most energy-efficient,
environmentally clean, and cost-effective
space-conditioning system (according to U.S.
EPA 1993)
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Geothermal Heat Pump Basic Principles
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The Earth is the Source of Heat in Winter
Outdoor air design temperature 10F in winter
72F
Insulating layer of earth
60F
A geothermal heat pump takes heat from the
earth during winter and transfers it into the
building
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and an Efficient Place to Reject Heat in Summer
Outdoor air design temperature 100F in summer
72F
Insulating layer of earth
60F
A geothermal heat pump cools the building in
summer by rejecting heat into the earth
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using Heat Pump Technology
A geothermal heat pump is connected to a sealed
water piping loop buried in the earth near the
building
Insulating layer of earth
When the warm or cold water exiting the heat pump
is pumped through the loop, it is naturally
cooled or warmed by the earth surrounding it
60F
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Geothermal Heat Pump Efficiency
One unit of energy from the grid
Yields 4-6 units of energy for the building
Plus 3-5 units of energy from the earth
400-600 Efficient
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Heat Pumps Are All Around Us
Air conditioners and air-source heat pumps
transfer heat from inside houses to the air
outside.
B
B
B
Refrigerators transfer heat from food into the
kitchen.
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Residential Site Energy Conventional System
Over 70 of the energy consumed by a typical home
is used for heating, cooling, and water heating
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Residential Site Energy Geothermal Heat Pump
System
Total site energy consumption is reduced by 50
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Geothermal Heat Pumps are the Most Efficient way
to convert Green Energy into Heating, Cooling
and Water Heating
Making the most effective use of this precious
resource
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Geothermal Systems can be Classified
as Solar Geothermal Renewable Alternative Demand
-Side Conservation Energy-Efficiency Zero-Ozone
Depleting Environmentally Responsible
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Geothermal Heat Pump Installation Methods
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Vertical Closed-Loop A pair of pipes with a
special U-bend assembly at the bottom is placed
into bore holes from 150 to 400 feet deep
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Horizontal Closed-Loop A piping array is
installed in trenches cut 3 to 5 feet deep and
hundreds of feet in length
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Surface Water Closed-Loop A piping array is
submerged in a pond or lake at least 8 feet deep
Ground Water Open-Loop Well water from an
underground aquifer is pumped through the
geothermal heat pump and then returned to the
aquifer or discharged to the surface
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Vertical Closed-Loop Installation
Drilling
Pipe Loop Insertion
Fusing Piping
Loops Ready for Unit
Installed Heat Pump
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Geothermal Heat Pump Operation
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Geothermal Heat Pumps Exchange Heat between Air
and Water
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1 Worth of Electricity to Operate the Compressor
and Fan Moves 4 Worth of Heat from the
Water Delivering 5 Worth of Heat into the
Air Heating Mode Shown
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Heat can be pumped uphill meaning delivered at
a higher temperature than the source
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Geothermal Heat PumpsHeat or Cool on Demand and
also Produce Hot Water
Operates on the Same Principle as a
Refrigerator Cooling Mode Shown
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Geothermal Heat Pump Advantages
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• Proven Technology
• Millions of units installed world-wide in
  commercial
• and residential applications
• Most Energy-Efficient and Environmentally
• Friendly HVAC System Widely Available
• Water is a better heat transfer medium than air
• Heat exchange loops tap the renewable energy of
  the Earth
• Whole House Comfort
• Heats or cools on demand
• Better Comfort and humidity control
• Easily adapted to zoned systems
• Produces Free Hot Water
• Uses EarthPure Refrigerant (ozone safe)

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• No Fossil Fuel
• Improves safety
• Eliminates service lines, flues, outside air
  intakes
• No site emissions
• No Outdoor Units
• Better aesthetics
• No noise
• No vandalism or theft concerns
• Long Equipment Life
• Factory sealed systems
• Indoor installation no exposure to the elements
• Moderate compressor loading vs. air-source
  systems
• Self Contained Compact Units
• Hidden within attics or installed in closets
• Upflow, horizontal, or downflow single-package
  units
• Split system and water-to-water units available

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Geothermal systems are at work in thousands of
buildings throughout the world The Oklahoma
State Capitol uses over 600 geothermal heat pumps
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Our Planet Is Under Assault From Many Forces
Our Planet is under Assault from many Forces
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Buildings are the Major Contributor
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There Are Many Solutions
There are Many Solutions
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Geothermal Heat Pumps are one of the Most
Effective and Deployable and
produce the lowest carbon dioxide emissions,
including all source effects, of all available
space-conditioning technologies(EPA, 1993)
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Using a Single Geothermal Heat Pump is
Equivalent to Planting an Acre of Trees
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Using A Single Geothermal Heat Pump Is
Equivalent to Taking Two Cars off the Road
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Since their introduction in the 1980s, nearly 1
million Geothermal Heat Pumps have been
installed in the United States
This is the equivalent to planting 1 million
acres of trees, and of taking Two Million cars
off the road