24 Mar '14, 6am

EERE Resource: Geothermal Projects Database (map of all #geothermal projects in U.S) #energy

EERE Resource: Geothermal Projects Database (map of all #geothermal projects in U.S) #energy

Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission Fluid Awardee: Lawrence Berkeley National Laboratory Location: Berkeley, CA Previous and current attempts to develop EGS in the U.S., Japan, Europe and Australia have all employed water as a heat transmission fluid. Water has many properties that make it a favorable medium for heat extraction, but it also has serious drawbacks. The use of supercritical CO2 (scCO2 ) instead of water as heat extraction fluid was suggested by Donald Brown of Los Alamos National Laboratory as a "game changing" alternative that can avoid the problems of aqueous fluids, make heretofore inaccessible energy resources available for human use, and provide ancillary benefits by using and storing CO2 . A CO2 -based EGS is expected to comprise three distinct zones. Zone 1 - The inner zone or "core" of the system, from which all water has b...

Full article: http://www4.eere.energy.gov/geothermal/projects

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