An estimate of the cost of electricity production from hot-dry rock [electronic resource].
- Albuquerque, N.M. : Sandia National Laboratories, 1993. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 155 - 163 : digital, PDF file
- Additional Creators:
- Sandia National Laboratories and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- This paper gives an estimate of the cost to produce electricity from hot-dry rock (HDR). Employment of the energy in HDR for the production of electricity requires drilling multiple wells from the surface to the hot rock, connecting the wells through hydraulic fracturing, and then circulating water through the fracture system to extract heat from the rock. The basic HDR system modeled in this paper consists of an injection well, two production wells, the fracture system (or HDR reservoir), and a binary power plant. Water is pumped into the reservoir through the injection well where it is heated and then recovered through the production wells. Upon recover, the hot water is pumped through a heat exchanger transferring heat to the binary, or working, fluid in the power plant. The power plant is a net 5.1-MW binary plant employing dry cooling. Make-up water is supplied by a local well. In this paper, the cost of producing electricity with the basic system is estimated as the sum of the costs of the individual parts. The effects on cost of variations to certain assumptions, as well as the sensitivity of costs to different aspects of the basic system, are also investigated.
- Published through SciTech Connect., 01/01/1993., "sand--93-0866j", " conf-930484--", "DE94001714", 11. Geothermal program review: geothermal energy - the environmentally responsible energy technology for the nineties, Berkeley, CA (United States), 27-29 Apr 1993., and Pierce, K G; Livesay, B J.
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