Performance Improvement of Geysers Power Plant Units 9 & 10
- Key words
- Power Generation; USA; California; Sonoma; Geysers; Case Histories; H2S Abatement; Hydrogen Sulfide; Cooling Towers; Condensers; Condensate; Gas Ejectors; Noncondensable Gas; Circulating Water; Steam Turbines; Turbines; Motors; Gear Boxes; Unocal; Toshiba
- Location
- The Geysers, California
- Conference
- Geothermal Resources Council Transactions
- Year
- 1990
- Session
- Power plant design and operation; Equipment design
- Language
- English
Abstract
The performance of Geysers Power Plant Units 9 and 10 deteriorated due to the effects of age, increasing undesirable steam constituents, and the introduction of continuous H2S abatement systems. In the ongoing process of trying to reverse this trend and keep the units operating at their full potential, several projects were implemented prior to and during the 1988 unit overhauls. The performance is measure by capacity (% of design generation) and efficiency of stem use (steam rate in lb/kwhr). The capacity was improved form 71.4% to 98.6% and the steam rate was reduced from 20.0 lb/hwhr to 16.3 lb/kwhr. The improvements were aimed at minimizing non generating steam use, eliminating curtailments due to exhaust and first stage pressure limitations and reducing lost generation due to redundant mechanical failures.
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