New concepts for converting the energy in low- to medium-temperature liquids, with emphasis on geothermal applications

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The Geothermal Development Program at Lawrence Livermore Lboratory has produced several novel expanders for liquids of low to medium temperatures (approx. 180/sup 0/C). A unique radial outflow reaction turbine (RORT) has been developed and laboratory-tested; results indicate that 50% engine efficiency is achievable. This work has led to a new concept called the velocity pump reaction turbine (VPRT), which could significantly increase the gross engine efficiency of the RORT, VPRT and its modifications are a unique family of turbines created specifically for expanding liquids to produce shaft work at potential engine efficiencies of up to 70%. Such devices, if used ... continued below

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Pages: 18

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Austin, A.L. & House, P.A. September 20, 1978.

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The Geothermal Development Program at Lawrence Livermore Lboratory has produced several novel expanders for liquids of low to medium temperatures (approx. 180/sup 0/C). A unique radial outflow reaction turbine (RORT) has been developed and laboratory-tested; results indicate that 50% engine efficiency is achievable. This work has led to a new concept called the velocity pump reaction turbine (VPRT), which could significantly increase the gross engine efficiency of the RORT, VPRT and its modifications are a unique family of turbines created specifically for expanding liquids to produce shaft work at potential engine efficiencies of up to 70%. Such devices, if used between the two separation stages of a double-flash system, could increase the overall power output by 15 to 20%, reducing power costs by at least 10% for about a 3% increase in capital costs. Geothermal applications are discussed with emphasis on geopressured resources. Also, these machines are suitable for utilizing solar heated fluids and waste heat sources from industrial processes.

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Pages: 18

Notes

Dep. NTIS, PC A02/MF A01.

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  • Report No.: UCRL-52583
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/6436046 | External Link
  • Office of Scientific & Technical Information Report Number: 6436046
  • Archival Resource Key: ark:/67531/metadc1209699

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • September 20, 1978

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Sept. 5, 2018, 3:02 p.m.

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Austin, A.L. & House, P.A. New concepts for converting the energy in low- to medium-temperature liquids, with emphasis on geothermal applications, report, September 20, 1978; United States. (digital.library.unt.edu/ark:/67531/metadc1209699/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.