Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission Fluid Geothermal Lab Call Project
Last modified on July 22, 2011.
|Project Title||Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission Fluid|
|Project Type / Topic 1||Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies|
|Project Type / Topic 2||Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions|
|Project Description|| 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.
Process behavior and issues are expected to be quite different in the different zones. This is especially true for chemical interactions. Little is known about the geochemistry of non-aqueous systems, and the absence of water in the inner zone poses unique questions to be addressed by experiments and modeling
|Objectives||Achieve a rational, science-based design that tests and interrogates critical process elements of EGS with CO2.|
|Awardees (Company / Institution)|| Lawrence Berkeley National Laboratory
|Partner 1|| Idaho National Laboratory
|Funding Opportunity Announcement||DE-PS36-09GO99017|
|DOE Funding Level (total award amount)||$956,000.00|
|Total Project Cost|| $956,000.00
|Principal Investigator(s)||Karsten Pruess, Lawrence Berkeley National Laboratory|
|Other Principal Investigators||George Redden, Idaho National Laboratory|
|Targets / Milestones|| - Test crucial predictions from theoretical models about the heat transfer and fluid flow properties of CO2;
|Location of Project|| Berkeley, CA, Idaho Falls, ID
|Funding Source||American Recovery and Reinvestment Act of 2009|
|References||EERE Geothermal Technologies Programs|