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Geothermal power harnesses the Earth's internal heat, utilizing it for electricity generation and HVAC systems. Typically located on tectonic fault lines, geothermal plants access heat from magma pockets. This renewable energy source accounts for less than 1% of global energy production, offering a smaller environmental footprint compared to coal-fired plants. With production wells reaching depths of 4,000 to 7,000 feet, steam pressure drives turbines efficiently. Explore the two main categories: closed-loop and open-loop systems, each designed for optimal energy use and sustainability.
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Geothermal power GEO = “EARTH” THERMAL = HEAT
TWO CATAGORIES • GEO-POWER PRODUCTION • Typically must be built on tectonic fault lines • Magma Pockets act as heat source for “boiler” • Accounts for less than 1% of world’s energy • 25% the footprint of coal fired plants • No fuel imports • No rail lines • “Production Wells” vs “Injection Wells” • 4000 – 7000 ft. deep • Super heat fluid flashes to superheated steam • High pressure steam • Low pressure steam • Both drive the turbine • Can be exhausted if mismanaged • Power Plants in the US • Faulkner
Two Categories Con’t • HVAC • Closed Looped Systems • Vertical Loop System • 150 -250 feet deep well with 5 – 6 inch core • Each well has two tubes = doubles surface area • Must grout the hole • $1850/well – depends on area • “Danglers” – air pockets with no contact • Horizontal Loop System • 6 – 14 ft deep depends on area • 100 – 200 ft long • “Slinky” effect with tubing – increases surface area • Manifold controls specific areas • Cheap but need more surface area • Open Loop System
