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Thermodynamics of energy extraction from fractured hot dry rock

Publication ,  Journal Article
Lim, JS; Bejan, A; Kim, JH
Published in: International Journal of Heat and Fluid Flow
January 1, 1992

It has been proposed to extract energy from the subterranean hot dry rock bed (HDR) by creating one or more narrow fractures in the rock and circulating cold water through the fractures. In time, the temperature of the rock region surrounding the crack drops under the influence of time-dependent conduction. This study presents the most basic thermodynamic aspects (first law and second law) of the HDR energy extraction process. It shows which parameters most influence the amount of useful energy (exergy) extracted from the HDR reservoir over a fixed time interval. For example, the water flow rate can be selected optimally in order to maximize the delivery of energy over the lifetime of the HDR system. © 1992.

Duke Scholars

Published In

International Journal of Heat and Fluid Flow

DOI

ISSN

0142-727X

Publication Date

January 1, 1992

Volume

13

Issue

1

Start / End Page

71 / 77

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4012 Fluid mechanics and thermal engineering
  • 0915 Interdisciplinary Engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering
 

Citation

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Lim, J. S., Bejan, A., & Kim, J. H. (1992). Thermodynamics of energy extraction from fractured hot dry rock. International Journal of Heat and Fluid Flow, 13(1), 71–77. https://doi.org/10.1016/0142-727X(92)90061-D
Lim, J. S., A. Bejan, and J. H. Kim. “Thermodynamics of energy extraction from fractured hot dry rock.” International Journal of Heat and Fluid Flow 13, no. 1 (January 1, 1992): 71–77. https://doi.org/10.1016/0142-727X(92)90061-D.
Lim JS, Bejan A, Kim JH. Thermodynamics of energy extraction from fractured hot dry rock. International Journal of Heat and Fluid Flow. 1992 Jan 1;13(1):71–7.
Lim, J. S., et al. “Thermodynamics of energy extraction from fractured hot dry rock.” International Journal of Heat and Fluid Flow, vol. 13, no. 1, Jan. 1992, pp. 71–77. Scopus, doi:10.1016/0142-727X(92)90061-D.
Lim JS, Bejan A, Kim JH. Thermodynamics of energy extraction from fractured hot dry rock. International Journal of Heat and Fluid Flow. 1992 Jan 1;13(1):71–77.
Journal cover image

Published In

International Journal of Heat and Fluid Flow

DOI

ISSN

0142-727X

Publication Date

January 1, 1992

Volume

13

Issue

1

Start / End Page

71 / 77

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4012 Fluid mechanics and thermal engineering
  • 0915 Interdisciplinary Engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering