Geothermal 101: Understanding the Mystery
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Geothermal 101: Understanding the Mystery

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Geothermal 101: Understanding the Mystery Geothermal 101: Understanding the Mystery Presentation Transcript

  • Geothermal Heat Pumps Geothermal 101 Understanding the Mystery 1 ECONAR Energy Systems
  • Geothermal Topics Geothermal Concepts  System Components  Moving Heat with Geothermal  Residential Case Study  2 ECONAR Energy Systems
  • The Basic Concept Geothermal Moves Heat Naturally 3 ECONAR Energy Systems
  • Geothermal Concepts Heat moves: From Warm To Cool 4 ECONAR Energy Systems
  • Geothermal Concepts  Geothermal uses the Earth’s natural heat as a renewable reliable energy source  It uses refrigeration technology  There is one system for heating and cooling 5 ECONAR Energy Systems
  • Geothermal Concepts  Earth’s surface temperature @ 8 feet remains constant at about 50°  Geothermal moves heat naturally  Fossil fuel systems create heat 6 ECONAR Energy Systems
  • Your Solar Collector 7 ECONAR Energy Systems
  • Geothermal Concepts Purpose of the Heat Pump: To provide a temperature difference • The temperature difference moves Btu’s • 8 ECONAR Energy Systems
  • Geothermal Concept Winter - Heating: Geothermal moves heat out of the Earth Summer - Cooling Geothermal moves heat into the Earth 9 ECONAR Energy Systems
  • Three Basic Components  1) The Earth  2) Geothermal Heat Pump  3) HVAC Distribution Systems 10 ECONAR Energy Systems
  • Moving Heat - The Geothermal Concept Key Components Geothermal Heat Pump Air Distribution System Geothermal Loop Field Intensify Removing Warm Air Heat from Heat the Earth Refrigerant to Air Water to Refrigerant Heat Exchanger Heat Exchanger 11 ECONAR Energy Systems
  • The Earth st Component The 1 12 ECONAR Energy Systems
  • Your Solar Collector 13 ECONAR Energy Systems
  • The Earth  Excellent solar collector  Natural renewal heat source  Easy to use as heat exchanger 14 ECONAR Energy Systems
  • Earth Heat Exchangers Two types:  Earth Loop / Pond Loop (closed)  Open Loop (well water) 15 ECONAR Energy Systems
  • 16 ECONAR Energy Systems
  • 17 ECONAR Energy Systems
  • 18 ECONAR Energy Systems
  • Earth Heat Exchanger: Horizontal Closed Loop Field Typical 6-Ton Horizontal System 19 ECONAR Energy Systems
  • Vertical Closed Loop 20 ECONAR Energy Systems
  • 21 ECONAR Energy Systems
  • Types of Heat Pumps Forced Air Heating & Cooling  Hydronic  Combination Forced Air &  Hydronic 22 ECONAR Energy Systems
  • 23 ECONAR Energy Systems
  • Inside the Heat Pump  Compressor  Refrigerant  Water Coil  Expansion Valve  Air Coil  Electronic Sensors & Controls 24 ECONAR Energy Systems
  • Moving Heat Naturally 50° Ground warms 32° Water warms 25° Refrigerant Refrigerant enters @ 25° Compressor Refrigerant leaves @ 160° 160° Refrigerant warms 70° Return Air to 100° Supply Air 25 ECONAR Energy Systems
  • Moving Heat - The Geothermal Concept Key Components Geothermal Heat Pump Air Distribution System Geothermal Loop Field Intensify Removing Warm Air Heat from Heat the Earth Refrigerant to Air Water to Refrigerant Heat Exchanger Heat Exchanger 26 ECONAR Energy Systems
  • A Review: The 3 Geothermal Components  Earth Heat Exchanger  Geothermal Heat Pump  HVAC Distribution System 27 ECONAR Energy Systems
  • Geothermal Advantages Economical: 50 % savings vs. Natural Gas  75 % savings vs. Propane Renewable Earth’s Surface – Solar Heated  Comfortable: Not a Drying Heat & Better A/C  Single Unit: Heat & Cooling  No Fossil Fuel: No Combustion, Safe  Low Maint. Located Inside, uses Ref. System  28 ECONAR Energy Systems
  • Geo 101 Summary Moving the Earth’s renewable heat  Heat will always move from Warm to Cool  Geothermal Heat Pumps:  - create the needed temperature difference to move Btu’s Single system for heating & cooling  29 ECONAR Energy Systems
  • Your Solar Collector 30 ECONAR Energy Systems
  • Case Study - Residential Typical Minnesota Home  3,000 SF  Annual Heating @ 100 MBTU  31 ECONAR Energy Systems
  • Residential Heating Costs Type of System Cost Geothermal $ 651 ( using $.080 per Kwh) 85% Nat. Gas $ 1,588 (using $1.35 / therm) 85% Propane $ 3,343 (using $ 2.60 / gal.) Electric $ 2,345 ( using $ .080 per Kwh) Annual Heating Usage @ 100 Mbtu 32 ECONAR Energy Systems
  • Case Study – Residential Clg. Annual Cooling Cost: Traditional A/C $ 200 Geothermal Cooling $ 140 Geo Savings $ 60 33 ECONAR Energy Systems
  • Case Study – Residential Annual Savings Summary Annual Geothermal Savings Compared to: Htg + Clg = Total Natural Gas $ 937 + $ 60 = $ 997 Propane $ 2,694 + $ 60 =$ 2,754 Electric $ 1,694 + $ 60 = $ 1,754 34 ECONAR Energy Systems
  • Your Solar Collector 35 ECONAR Energy Systems