Abstract
The geothermal energy is renewable energy, which is viewed as a promising alternative to fossil energy. This paper conducts a comparative study among double-flash, flash-Kalina and flash-ORC geothermal power plants. The mathematical models of three different geothermal power plants are established. And parametric analyses are performed to examine the effect of some key parameters on system performance. The performance of each cycle has been discussed in terms of the net power output, thermal efficiency and exergy efficiency. Moreover, genetic algorithm (GA) is used to conduct optimization to obtain the best performance of three different geothermal power plants. Flash-ORC geothermal power plant yields the highest exergy efficiency of 46.121%. Exergy efficiency of Flash-Kalina geothermal power plant is 36.747%, but the inlet pressure of ammonia-water turbine is much higher than that of organic turbine and steam turbine. Double-flash has the lowest exergy efficiency of 31.922%.
| Original language | English |
|---|---|
| Title of host publication | ECOS 2015 - 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems |
| Publisher | International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems |
| ISBN (Electronic) | 9782955553909 |
| State | Published - 2015 |
| Event | 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 - Pau, France Duration: 29 Jun 2015 → 3 Jul 2015 |
Publication series
| Name | ECOS 2015 - 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems |
|---|
Conference
| Conference | 28th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2015 |
|---|---|
| Country/Territory | France |
| City | Pau |
| Period | 29/06/15 → 3/07/15 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Double-flash
- Flash-ORC
- Flash-kalina
- Geothermal energy
- Thermodynamic analysis
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