Presenter:Patrick J' Gibson

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GROUND SOURCE HEAT pUMPS IN NEW MEXICO
SCHOOLS Presentation to NEW MEXICO GEOTHERMAL
ENERGY WORKING GROUP
Presenter Patrick J. Gibson Vice
President of Operations
May 20, 2009
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Ground Source Heat Pump (GSHP)Technology and
Applications

• Benefits, Value and Maintainability

According the U.S. Department of Energy, ground
source heat pump (GSHP) systems in schools reduce
energy use by 25 to 50 compared to traditional
systems and result in typical payback periods of
two to eight years. However, the U.S. General
Accounting Office states that the use of GSHP
systems is limited, in part, because users are
unfamiliar with the technology. Ground Source
Heat Pumps in Schools, By Jim MacMillan, P.E.,
ASHRAE Journal , September 2007
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GEOEXCHANGE FACT SHEET

• Geothermal heat pump systems, also known as
  geoexchange, are the most energy efficient,
  environmentally clean, and cost-effective space
  conditioning systems available, according to the
  Environmental Protection Agency.
• Geothermal heat pumps strengthen U.S. energy
  security. Every 100,000 homes with geothermal
  heat pump systems reduce foreign oil consumption
  by 2.15 million barrels annually and reduce
  electricity consumption by 799 million kilowatt
  hours annually.
• Geothermal heat pumps save money. Schools now
  using geothermal heat pump systems save more than
  25 million in energy costs meaning more money
  for books, equipment and teachers.
• Geothermal heat pumps are environmental. They
  generate no on site emissions and have the lowest
  emissions among all heating and cooling
  technologies.

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Space
17 reflected by clouds.
100
6 reflected by surface.
Atmosphere
19 absorbed by water vapor, dust
4 absorbed by clouds.
46 absorbed by ground
Earth
The earth is like a solar battery absorbing
nearly half of the suns energy. The ground stays
a relatively constant temperature through the
seasons, providing a warm source in winter a
cool heat sink in summer.
Ground Source Heat Pump Systems Introduction
Overview
U.S. Dept. of Energy
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GROUND SOURCE HEAT PUMP SYSTEM

• FEATURES AND BENEFITS
• Energy savings
• Lower operating and maintenance costs
• Increase equipment life expectancy
• Superior classroom comfort, individual controls
• No seasonal change over, heating or cooling
  always available
• Decrease space requirements
• Aesthetics Equipment not on roof
• Safety Equipment not located on ground outside
  of building
• Security Interior equipment location reduces
  vandalism

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SAMPLE HVAC LIFE CYCLE COST
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Turnkey Project

• Engineering
• Design
• Project Management
• Best Practices
• One Point of Accountability
• Direct Digital Controls

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The Zero Energy Footprint it is nearer than it
seems
Ground source heat pumps along with other
efficiency and renewable energy technologies
implemented and Planned are taking us one step
closer.
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Success Alamogordo Public Schools
Largest Renewable Energy School HVAC Project in
the Southwest Plus District-wide Energy
Efficiency Measures

• District Focus
• Renewables / Efficiency
• Creative Financing
• Excellence in operations
• Improved learning
• environments
• Optimized DDC system

NM Green Building Award
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Think Green
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PROJECT FINANCING

• Performance Contract
• General Obligation Bonds
• Public School Capital Outlay Council
• Local 2-Mil Levy (SB-9)
• Direct Appropriation

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BORE FIELD
Drilling
Conductivity Test
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GROUND LOOP HEAT EXCHANGER
Inserting Ground Loop Pipe
Mixing the Grout
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BORE FIELD SUPPLIES
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Site Water Retention Ponds
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GROUND LOOP HEADER SYSTEM
Placing Valve Box Vault
Filling Purge of Water Loops
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HORIZONTAL/VERTICAL MOUNTED HEAT PUMP UNITS
Vertical Mounted Heat Pump Unit
Horizontal Mounted Heat Pump Unit
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VISION FOR THE FUTURE

• Ensure long term success of Energy Efficiency
  Project through measurement and verification
• Expand Smart Energy Control System to all schools
• Expand Ground Source Heat Pumps to all schools
• Implement renewable energy to achieve zero net
  energy schools

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Q U E S T I O N S