| Title | Thermodynamics Analysis of Kalina Cycle System (KCS) 11 for Jailolo Geothermal Field - Halmahera, Indonesia |
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| Authors | Yose A. FARASI, SIHANA, KHASANI, Deny KURNIAWAN |
| Year | 2020 |
| Conference | World Geothermal Congress |
| Keywords | KCS 11, ammonia-water mixture, thermodynamics analysis, cylce tempo |
| Abstract | Jailolo geothermal field located in Western Halmahera will be develop as geothermal power plant to meet the electricity demand in Northern Maluku. The geothermal fluid is estimated to have the characteristics of two-phase medium temperature-water dominated with brine fractions of 80% (temperature 179 degree Celsius), possibly for a binary power plant development. Kalina Cycle System (KCS) 11 is a binary cycle, which utilizes the thermodynamics properties of ammonia-water mixture, commercially built first in 2000 in Iceland has proven success in operations by gaining better efficiency than other power plant at low operating temperatures. Thermodynamics analysis that will be examined in this study is obtain optimum conditions in the Jailolo geothermal field based on calculations of energy with help of software cycle tempo 5.0. To obtain maximum power and efficiency of the resulting system. Optimization process is carried out on a mass fraction of ammonia-water mixture and turbine inlet pressure. The optimum condition obtained in mass fraction 85% of ammonia-water mixture with the turbine inlet pressure of 29 bar. Which has energy efficiency (net) 11.7% with delivered net power of 3.26 MW. This analysis can be consider to assist the determination of geothermal field development strategy in Jailolo. |