Development of scale deposit inhibition technology using turbine water-cooled nozzle
- Mitsubishi Heavy Industries, Ltd., Nagasaki (Japan)
The scale deposition onto turbines in geothermal power stations is usually regarded as unavoidable whereas this is one of the most serious concerns which can affect the interval of periodical inspections. In common practice, scale is removed manually and mechanically during periodical inspections of power stations, but there are some cases of geothermal power stations where scale is removed from the turbines without stopping turbines by practicing the turbine washing operation. The jointly developed technology by Tohoku Electric Power Co., Ltd. and Mitsubishi Heavy Industries, Ltd. in the present work, is a technique capable preventing scale deposition and precipitation by water-cooling the turbine first stage nozzle subjected to the highest deposition of scale and its effect has been confirmed through its model in the field test. This paper presents these test processes and the test results.
- OSTI ID:
- 175666
- Report Number(s):
- CONF-951037-; TRN: 95:008065-0079
- Resource Relation:
- Conference: Annual meeting of the Geothermal Resources Council, Reno, NV (United States), 8-11 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Accomplishments of the past and challenges of the future. Transactions, Volume 19; PB: 604 p.
- Country of Publication:
- United States
- Language:
- English
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