ENERGY 303 Lecture Notes - Lecture 14: Hot Dry Rock Geothermal Energy, Geothermal Power, Kilowatt Hour
Document Summary
Existing large-scale geothermal power generation is all of this type. The geysers geothermal field, california (reference pictures) There"s a heat source in the form of the magna, we are using the water heated in the permeable reservoir; we"re tapping into these waters that are heated and using them for energy. Plants online 100-90% of the time (vs. 75% for coal and highly intermittent for wind/solar) Low (even possible no) emission of co2. May not require a lot of land. Can produce useful byproducts such as zinc and silica. Average cost ~4-8 cents per kilowatt hour (so should be competitive with other energy sources) Brine can salinated soil if the water not re-injected. Extracting water can lead to land subsidence, induced seismic activity. Can release h2s, the rotten eggs gas (potentially fatal in large doses) Not strictly renewable, and limited hydrothermal resources available. Hot-dry rock: take places that don"t have these reservoirs; engineered geothermal .
