Application of the Kalina Cycle Technology to Geothermal Power Generation
- Key words
- Organic Rankine Cycle; Heat Exchangers; Turbines; Recuperation; Thermodynamics; Ammonia; Efficiency
- Conference
- Geothermal Resources Council Transactions
- Year
- 1989
- Session
- Binary cycle power generation; Power plant design and operat
- Language
- English
Abstract
The Kalina cycle technology is ideally suited for low temperature, liquid dominated sources that are now being served by binary Rankine cycle plants. The technology focuses on structural changes to the design, high degrees of recuperation, and the use of working fluid mixtures. As a result, output is often 50 percent greater than that of a comparable Rankine cycle plant. A 5MW plant design is presented, giving performance, thermodynamic state points, and heat exchanger duty curves. Preliminary sizing of the plant's heat exchangers are presented as the initial step in establishing plant cost. Extrapolations to and comparison with the Heber ORC plant is also presented. A hybrid flash/Kalina plant is shown for higher temperatures.
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