High-Potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants Geothermal Project
Last modified on July 22, 2011.
|Project Title||High-Potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants|
|Project Type / Topic 1||Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis|
|Project Type / Topic 2||Working Fluids for Binary Power Plants|
|Project Description|| GE Global Research, in partnership with AltaRock Energy Inc., (ARE) and the National Institute of Standards and Technology (NIST), propose to identify working fluids for supercritical and trilateral cycles that, when utilized in a binary power block that has been appropriately engineered for a given geothermal site, enable marked increases (20 – 50%) in energy conversion efficiency as compared to currently utilized isopentane, isobutane or refrigerants in a subcritical Organic Rankine Cycle.
Enabling working fluids for trilateral and supercritical cycles will help realize economically viable geothermal power generation from a broader range of resources temperature. Economic power generation from lower temperature source streams will allow development of geothermal energy from larger areas of this ubiquitous renewable resource. Advancements in drilling technology and reservoir engineering will make higher temperature source streams more commonly available.
|Objectives||Identify high potential working fluids for any source temperature in the range anticipated for next generation geothermal plants.|
|Awardees (Company / Institution)||GE Global Research|
|Partner 1||AltaRock Energy, Inc|
|Partner 2|| National Institute of Standards and Technology
|Funding Opportunity Announcement||DE-FOA-0000075|
|DOE Funding Level (total award amount)||$3,000,000.00|
|Awardee Cost Share||$750,000.00|
|Total Project Cost|| $3,750,000.00
|Principal Investigator(s)|| Helge Klockow
|Targets / Milestones|| - Phase I of the program is the identification of a group of fluids with potential, based on available thermodynamic and thermophysical property data, to increase power generation efficiencies in EGS applications when used as working fluids in trilateral and/or supercritical cycles. In the process of identifying this group of high potential fluids, a cycle performance model will be built based on thermodynamics and expertise in hardware selection for cycle design.
|Location of Project|| Niskayuna, NY
|Impacts||If successful, new working fluid could increase energy conversion efficiency in binary power plants.|
|Funding Source||American Recovery and Reinvestment Act of 2009|
|References||EERE Geothermal Technologies Programs|