Performance of a total-flow impulse turbine for geothermal applications

Author: Comfort, III., W. J.
Published: United States : [publisher not identified], 1977.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1977.
Physical Description: microfiche : negative ; 11 x 15 cm

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Summary

A new, axial-flow impulse turbine was tested at LLL as part of the geothermal energy development program. Engine efficiency of this single-stage, two-phase expander was measured at 23% during a single-nozzle test. Performance predictions of a numerical model agreed with these results. Full-admission performance (based on the numerical-model and attainable nozzle thrust coefficients) indicates that engine efficiency can reach between 38 and 40% with present technology. Improved techniques for analyzing two-phase flow and further reduction of droplet sizes should provide 70% engine efficiency.

Report Numbers

UCRL-79325; CONF-770804-1

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: W-7405-ENG-48
OSTI Identifier 7255730
Research organization: California Univ., Livermore (USA). Lawrence Livermore Lab.

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