Welcome Everyone. Not Quite this kind! Geothermal Heat Pumps are a indirect solar heating system! Introduction to Geothermal

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1 Welcome Everyone To the Introduction to Geothermal Heat Pump Technology! Introduction to Geothermal What is geothermal technology and how does it work Technology & Components Heat Pump Operation Earth Loops & options Applications What are the benefits of geothermal Keys to Success Deep Earth Geothermal Energy? What is Geothermal Heat Pump Technology and How Does It Work Not Quite this kind! Where can Geo be Used Geothermal Heat Pumps are a indirect solar heating system!

2 19% reflected Space 100% It s a Heat Source in Winter by clouds. 8% reflected by surface. 21% absorbed by water vapor, dust 5% absorbed by clouds. 47% absorbed by ground Atmosphere Earth The earth is like a solar battery absorbing nearly half of the sun s energy. The ground stays a relatively constant temperature through the seasons, providing a warm source in winter & a cool heat sink in summer. 70 F F Minus 30 F in winter Insulating layer of earth A Geothermal System cools the ground in winter & transfers the heat into the building And It s A Cool Place to Dump Heat in Summer Heat Is Transferred Through an Earth Loop 70 F Plus 95 F in summer Insulating layer of earth Plastic pipe is buried in the earth around the building Insulating layer of earth F and cools the building in summer by rejecting heat to the cooler ground When hot or cold liquid is pumped through the pipe, it warms or cools the earth around it F Earth Loops They are an Investment in Energy! So.. It s Like Having Your Own Energy Well, But It comes from your own backyard (no transportation cost) It s free & renewable It s environmentally friendly It s available everywhere and It heats, cools, & does hot water

3 Main Components of a Geothermal Heat Pump System What are the Components of a Geothermal System Refrigerant Loop Air Loop Domestic Hot Water Loop (optional) Earth Loop What is a Heat Pump Heat pumps are refrigeration devices Refrigerators, freezers, AC units, dehumidifiers, and ice machines are all heat pumps Heat pumps use the refrigeration cycle The refrigeration cycle can leverage and multiply input energy into additional Btu s. (Connected to the earth, performance can be as much as 5 times the input) How does the heat pump work The Geothermal System-Heating Heat pump systems move heat energy, which already exists, from one place to the other does not create heat. Ground heat exchanger s use the earth s stable temperature to help improve heating and cooling efficiency. Phase changes within the heat pump heat exchangers from liquids to gas and gas to liquids move energy System removes heat from the loop Low Pressure System intensifies the heat with the compressor High Pressure Fan distributes heat to the space

4 The Geothermal System-Cooling Domestic Hot Water Loop High Pressure Low Pressure System dumps all the heat to the loop Compressor adds a small amount of heat to the system Indoor coil removes heat & moisture from the air-adds to system Saves up to 60% on hot water costs annually! Domestic Water Heater Standard electric unit Desuperheater Generates hot water whenever compressor is in operation to heat or cool the home Earth Loop Earth Loop Options Closed Loop Systems (Re-circulated) Horizontal loop configurations Vertical loop configurations Pond loop configurations All loops are sized for the same results Each produces the same annual operating costs Residential loops have gallons of fluid Open Loop System Pump & Dump or Well Water Vertical Loop Open Loop Horizontal Loop Pond Loop Loop System Materials Ground loop piping (200+ year life) Plastic pipe high density polyethylene which is a higher grade than natural gas pipelines Heat fusion method of joining pipe & fittings very reliable method which makes one continuous pipe Antifreeze heat transfer solution-food grade Small pumping station-low energy consumption and reliable components 50 year Manufacturer warranty on pipe Applications for Geothermal Typical forced air heating and cooling New Construction or Retrofit Domestic hot water heating systems Radiant floor heating systems Pool/spa water heating systems Dual fuel heating systems Residential/Commercial/Industrial/Agricultural

5 Distribution Systems-Air Loop Typical Ground Loop Application Warm or cold air blown through ductwork Zone Control (optional) Excellent Comfort Flexible Duct Auxiliary Electric Heat To Loop Flow Controller Collar Hose Kit Air Pad P/T Plugs Innovative Controls Water-Air Heat Pump Heating/Cooling Forced Air Dual Fuel Geothermal Application Distribution Systems-Hydronic Loop Additional method of distribution Hydronic Systems Heating providing with warm water distributed with in floor tubing Room Zone Control Outstanding Comfort Geothermal Energy What are the benefits of a Geothermal system 1 unit of electrical energy 3-4 units of energy moved from the earth 4-5 units delivered to the space = % Efficient

6 Energy Savings Average Home in the midwest uses mil Btu s per year for heating Geothermal Heat pumps roughly 2/3 of the Btu s are free during the heating season That means you only purchase 1/3 of those Btu s That Equals 30-70% Energy Savings! Saves on energy consumption for future generations No more power plants Less Environmental Impact Greenhouse Gas Reduction = Replacing a gas furnace with a Geothermal System in an average home reduces Green House Gas emissions by about the same amount as removing two cars from the road! Residential Energy Use Lighting Appliances 3% 11% Heating & A.C. 64% Hot Water 22% Residential Energy Use Free Geothermal 51% Appliances 11% Heating & A.C. 19% Lighting 3% Hot Water 16% Conventional System Geothermal System Cost of Energy for Heating Sample Home in LaCrosse, WI Cost Per Million BTU $30.00 $25.00 Dollars $20.00 $15.00 $10.00 $5.00 Geo #1 Geo #2 ASHP #1 ASHP #2 Electric Nat Gas LP Gas Fuel Oil $0.00 $.05/kw h $.10/kw h $.05/kw h $.10/kw h $.05/kw h $1.25/ccf $2.25/gal $3.00/gal Heating Systems Average 3000sqft home in LaCrosse, WI uses between million Btu s each heating season! Vs. Natural Gas Vs. Propane Gas

7 1 unit of purchased fossil fuel Fossil Fuels 5-20% of heat up the chimney 80-95% of heat to the building You would have to purchase Natural gas at $.80/therm, or LP gas at $.73/gal to equal geothermal at $.10/kw (Comparing 95% Efficient AFUE Furnace) Gas/Electric HVAC System 1.1 kwh T 1.6 kwh Thermal Power Plant (Source) 14.6 kwh Thermal Gas 13.1 kwh Thermal 1.3 kwh Generation and Transmission 0.5 kwh ELEC (fan power) 11.8 kwh Thermal Fan 0.5 kwh Thermal Gas 9.5 kwh Thermal Total 10.0 kwh Thermal Fan Gas Furnace 90% Eff. 2.3 kwh (Load) Furnace 9.5 kwh Thermal The natural gas system loses about 10% in the transmission process and another 5 to 10% at the furnace. Electricity is also needed for the furnace fans. The total required to deliver 10 kwh to the building is 14.6 from the source. This is an overall efficiency of 68% source to delivered. Electric Resistance Electric Resistance 1 unit of purchased electricity 1 unit of heat to the building Source 20 kwh T Generating and Transmission 30 kwh Thermal Power Plant 10 kwh Elec Resistance Heat Load 10 kwh Thermal You would have to purchase electricity at $.029/kwh to equal geothermal at $.10/kwh The required input energy to deliver 10 kwh of heat to a home using an resistance heat would be 30 kwh. About 70% of the input energy is lost during the generation and transmission process of a typical fossil-fuel power plant. The resistance heat will deliver a 1 to 1 ratio of energy supplied to energy delivered. Air Source Heat Pump Geothermal Input Energy Source 12 kwh T Generating and Transmission 17 kwh Thermal Power Plant 5 kwh Elec Conventional Heat Pump Load 10 kwh Thermal The required input energy to deliver 10 kwh of heat to a home using an air-source heat pump would be 17 kwh. About 70% of the input energy is lost during the generation and transmission process of a typical fossil-fuel power plant. The air-source heat pump will deliver a COP of 2 when defrost and auxiliary heat penalties are properly applied. A small amount of electricity is used to power the compressor, circulating pump & blower

8 Geothermal Output Energy Standard Generation + GSHP 1 unit of electrical energy 3-4 units of energy moved from the earth 4-5 units delivered to the space = % Efficient Source 6.3 kwh T 9 kwh T Power Plant 2.7 kwh E Generation and Transmission Ground Source Heat Pump COP = 3.7 Load 10 kwh T GSHP require only 9 kwh T from the source to provide 10 kwh T to the building since they can provide a COP of 3.7 Advanced Generation + GSHP 3.3 kwh T 6 kwh T Natural Gas Combined-Cycle Power Plant Generation and Transmission 2.7 kwh E Ground Source Heat Pump 10 kwh T Generation efficiency approaches 55% compared with 35% for a steam cycle alone. GSHP require only 6 kwh T from the source to provide 10 kwh T to the building due to the increase in power plant efficiency. Additional Benefits Free & Renewable Energy - Solar Quiet Operation All Electric - Safe Increased comfort levels More reliable equipment Less maintenance Aesthetics of the home Earth Energy Systems are recognized as the leading space conditioning technology in all locations & from most perspectives operating performance, annualized cost, environmental impact & attractiveness to utilities as a DSM measure (U.S. EPA report 430-R ) have a higher mitigating effect on GHG emissions and global warming impacts than any other market-available available technology (NRCan market analysis) What can go wrong The design and sizing of the system & components Un-Qualified or Un-trained installer To small of a loop field Improper loop for soil conditions Ductwork sizing & installation Radiant floor design & installation = High Utility Bills & Poor Comfort

9 Keys to Success The design and sizing of the system Design and installation of the earth loop system Don t try any new techniques that haven t been proven or tested Ask for referrals Ask lot s of questions Selecting the proper contractor Additional notes Lights dimming Soft start kits USDA grants for ag communities Questions??? Comments!!! Thank You!