0308s05geotherma - Universal Heat Mining Geothermal Energy...

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Unformatted text preview: Universal Heat Mining Geothermal Energy for Everyone Jefferson Tester Professor of Chemical Engineering Laboratory for Energy and the Environment Massachusetts Institute of Technology Cambridge, MA 02139 MIT Laboratory for Energy and the Environment Overview Global sustainability issues that influence the energy landscape Some examples of more sustainable approaches that require improved characterization and prediction of subsurface behavior Characteristics and role of geothermal energy Potential of heat mining from Hot Dry Rock Current Status of the technology Economic projections and requirements for commercial feasibility A proposed US program MIT Laboratory for Energy and the Environment The Big Energy Questions Can we satisfactorily reduce emissions and remediate wastes residing in our water and air basins? Can we offset changes being introduced by our consumption of fossil fuels? Can we significantly reduce our dependence on imported oil? Can nuclear, renewable, and other non-fossil energy resources be deployed quickly enough to make a difference? MIT Laboratory for Energy and the Environment Even in an asymptotic world the challenge is great!! Population - 6+ billion growing to 10 to15+ billion Total primary energy 400 quads growing to 2000+ quads annually 73 billion growing to 365+ billion bbl of oil/yr Per capita energy per year 10 BOE/yr-person growing to 25 BOE/yr-person Number of cars and trucks - 750 million now growing to 5 + billion MW electric generating capacity - 3.5 million MWe now growing to 15+ million MWe MIT Laboratory for Energy and the Environment Transitioning to new supply system on a global scale will need robust technologies, favorable economics and proactive policies MIT Laboratory for Energy and the Environment Desirable Characteristics of a Sustainable Energy Supply System Renewable non-depletable on a short time scale Accessible and well distributed available close to demand Emissions free no NO x , SO x , CO 2 , particulates, etc . Scalable from < 1 MW to 1000 MW ( t or e) Dispatchable - for base load, peaking, and distributed needs Robust - simple, reliable, and safe to operate Flexible - applications for electricity, heat, and cogen Competitive with fossil fuels when externalities are included in the price MIT Laboratory for Energy and the Environment More sustainable approaches Require increased use of indigenous, renewable energy resources There are two fundamental sources of renewable energy 1. The sun -- looking outward 2. The earth looking inward Currently we are focused on looking outward for a solution e.g. PV, CSP, bioenergy, wind, etc Looking inward for geothermal energy requires improved technology and understanding of subsurface environments MIT Laboratory for Energy and the Environment Multiple Opportunities Universal geothermal heat mining Carbon dioxide sequestration in geologic formations...
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0308s05geotherma - Universal Heat Mining Geothermal Energy...

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