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Geothermal Heat Pumps A Proven Renewable Energy Technology

Geothermal Heat Pumps

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A Proven Renewable Energy Technology. Geothermal Heat Pumps. While Earth travels through Space…. …it Absorbs Energy from the Sun. This natural Energy Collection and Storage System captures nearly half of the Solar Energy falling on Earth…. - PowerPoint PPT Presentation

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Page 1: Geothermal Heat Pumps

Geothermal Heat Pumps

A Proven Renewable Energy Technology

Page 2: Geothermal Heat Pumps

While Earth travels through Space…

Page 3: Geothermal Heat Pumps

…it Absorbs Energy from the Sun

Page 4: Geothermal Heat Pumps

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

Page 5: Geothermal Heat Pumps

Water is an incredibly efficient medium for transporting Thermal Energy

Page 6: Geothermal Heat Pumps

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)

Page 7: Geothermal Heat Pumps

Geothermal Heat PumpBasic Principles

Page 8: Geothermal Heat Pumps

The Earth is the Source of Heat in Winter…

Outdoor air design temperature:10°F in winter

72°F

60°F

Insulating layer of earth

A geothermal heat pump takes heat from the earth during winter and transfers it into the building

Page 9: Geothermal Heat Pumps

…and an Efficient Place to Reject Heat in Summer…

Outdoor air design temperature:100°F in summer

72°F

60°F

Insulating layer of earth

A geothermal heat pump cools the building in summer by rejecting heat into the earth

Page 10: Geothermal Heat Pumps

A geothermal heat pump is connected to a sealed water piping loop buried in the earth near the building

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

60°F

Insulating layer of earth

…using Heat Pump Technology

Page 11: Geothermal Heat Pumps

Geothermal Heat Pump Efficiency

One unit of energy from the grid

Plus:3-5 units of energy

from the earth

Yields:4-6 units of energy

for the building

400-600% Efficient

Page 12: Geothermal Heat Pumps

Heat Pumps Are All Around Us…

Air conditioners and air-source heat pumps transfer heat from inside houses to the air outside.

Refrigerators transfer heat from food into the kitchen.

HEAT

BB

B

HEAT

Page 13: Geothermal Heat Pumps

Residential Site EnergyConventional System

Over 70% of the energy consumed by a typical home is used for heating, cooling, and water heating

Page 14: Geothermal Heat Pumps

Residential Site EnergyGeothermal Heat Pump System

Total site energy consumption is reduced by 50%

Page 15: Geothermal Heat Pumps

Geothermal Heat Pumpsare the Most Efficient way to convert

Green Energy into Heating, Cooling and Water Heating

Making the most effective use of this precious resource

Page 16: Geothermal Heat Pumps

Geothermal Systems can be Classified as:

SolarGeothermalRenewableAlternative

Demand-SideConservation

Energy-EfficiencyZero-Ozone Depleting

Environmentally Responsible

Page 17: Geothermal Heat Pumps

Geothermal Heat PumpInstallation Methods

Page 18: Geothermal Heat Pumps

Vertical Closed-LoopA 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-LoopA piping array is submerged in a pond or lake at least 8 feet deep

Ground WaterOpen-LoopWell water from an underground aquifer is pumped through the geothermal heat pump and then returned to the aquifer or discharged to the surface

Page 21: Geothermal Heat Pumps

Vertical Closed-Loop Installation

DrillingPipe LoopInsertion Fusing

Piping LoopsReady forUnit

InstalledHeat Pump

Page 22: Geothermal Heat Pumps

Geothermal Heat Pump Operation

Page 23: Geothermal Heat Pumps

Air In70 F

Air Out100 F

WaterOut54 F

WaterIn

60 F

Compressor

Fan

WaterCoil

Air Coil

ReversingValve

ExpansionValve

Geothermal Heat Pumps Exchange Heat between Air and Water

$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

$5$5$4$4

$1$1Heat can be “pumped uphill”meaning delivered at a highertemperature than the source

Page 24: Geothermal Heat Pumps

Air In80 F

Air Out58 F

WaterOut95 F

WaterIn

85 F

Compressor

Fan

WaterCoil

Air Coil

ReversingValve

ExpansionValve

Geothermal Heat PumpsHeat or Cool on Demand and also

Produce Hot Water

Operates on the Same Principle as a Refrigerator

Cooling Mode Shown

Page 25: Geothermal Heat Pumps

Geothermal Heat PumpAdvantages

Page 26: Geothermal Heat Pumps

Proven Technology •Millions of units installed world-wide in commercial and residential applications

Most Energy-Efficient and EnvironmentallyFriendly 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)

Page 27: Geothermal Heat Pumps

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

Page 28: Geothermal Heat Pumps

Geothermal systems are at work in thousands of buildings throughout the world

The Oklahoma State Capitol uses over 600 geothermal heat pumps

Page 29: Geothermal Heat Pumps

Our Planet Is Under AssaultFrom Many Forces

Our Planet is under Assault

from many Forces

Page 30: Geothermal Heat Pumps

Buildings are the Major Contributor

Industry377 MMTC

(25%)

Transportation482 MMTC

(32%)

Buildings658 MMTC(43%)

43% of U.S. Carbon Emissions 39% of U.S. Primary Energy Consumption

71% of U.S. Electricity

Global Pressures

53% of U.S. Natural Gas

1970-2020 (Exxon Mobile Projection)

Page 31: Geothermal Heat Pumps

There Are Many Solutions

There are Many Solutions

Page 32: Geothermal Heat Pumps

Geothermal Heat Pumpsare one of the Most Effective

and Deployableand…

… produce the lowest carbon dioxide emissions, including all source effects, of all available space-conditioning technologies

(EPA, 1993)

Page 33: Geothermal Heat Pumps

Using a Single Geothermal Heat Pump is Equivalent to

Planting an Acre of Trees

Page 34: Geothermal Heat Pumps

Using A Single Geothermal Heat Pump Is Equivalent to

Taking Two Cars off the Road

Page 35: Geothermal Heat Pumps

Since their introduction in the 1980’s, 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 Millioncars off the road