Exergy analysis and optimization of Dieng single-flash geothermal power plant

Pambudi, Nugroho Agung; Itoi, Ryuichi; Jalilinasrabady, Saeid; Jaelani, Khasani

doi:10.1016/j.enconman.2013.10.073

Cited by 73 publications

(35 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1). Notice that although a fluid coming from deep underground geothermal systems typically contains dissolved gases (such as H2S (Thorsteinsson et al, 2013)), silica (Sugita et al, 2003) and calcite (Hébert et al, 2010), it is assumed in this paper that its properties may be approximated as equal to those of pure water, which is in line with recent literature (e.g., Jalilinasrabady et al, 2012;Pambudi et al, 2014).…”

Section: Double-flash Reference Designsupporting

confidence: 68%

Improvement of Double-Flash geothermal power plant design: A comparison of six interstage heating processes

Sarr

Mathieu-Potvin

2015

Geothermics

View full text Add to dashboard Cite

In this paper, six different modifications of the Double-Flash power plants are proposed. These modifications are named "interstage heating" and consist of additional heat exchangers properly located in the system. The six interstage heating designs are analysed, optimized and then compared to an optimized Double-Flash reference power plant. The objective function is the power plant specific output (kJ/kg), and the design variables are the separator temperatures (°C) and the split fraction. Optimizations are performed for a wide range of reservoir temperatures (i.e., from 140 °C to 240 °C). Results show that interstage heating processes may increase the specific output of the plant by about 5%, decrease the liquid content in the low pressure turbine by about 50%, and decrease the required cooling capacity of the plant by about 10%. On the other hand, the analysis showed that the new designs proposed have negligible influence on the high pressure turbine liquid content or on the silica saturation coefficient. Keywords

show abstract

Section: Double-flash Reference Designsupporting

confidence: 68%

Improvement of Double-Flash geothermal power plant design: A comparison of six interstage heating processes

Sarr

Mathieu-Potvin

2015

Geothermics

View full text Add to dashboard Cite

show abstract

“…Their purpose was to improve cycling efficiencies, the most recent [9][10][11], being for single flash, double flash and binary respectively. Moreover, a number of more complex plant configurations were studied and proposed in literature.…”

Section: Introductionmentioning

confidence: 99%

A tool for evaluating geothermal power exploitability and its application to Ischia, Southern Italy

et al. 2015

View full text Add to dashboard Cite

h i g h l i g h t sA method to evaluate the potential for electric power production at geothermal sites. It evaluates geofluid's flow rate, pressure, temperature and non-condensable gases. It defines the best plant option and finally returns the actual available power. a r t i c l e i n f o b s t r a c tThe paper proposes a method to evaluate the potential for electric power production at any site of possible geothermal interest. Accounting for geological data of the reservoirs, the method allows the computation of the available electrical power of the investigated site. Electrical energy production from geothermal sources is realized through different techniques, such as single flash and double flash, dry steam, and binary ORC plants. The technique chosen to be the most productive is determined by analyzing a specific range of geofluid properties, mainly temperature and pressure. Moreover, each plant typology has a global efficiency that may be correlated to geofluid enthalpy by empiric relations available in literature. The proposed evaluation method brings together all these correlations, yielding the power availability from a geosource, once its temperature and pressure are known. The method takes as input the geofluid available flow rate, its pressure, temperature and non-condensable gas content. It defines the best plant option from these parameters, calculates its global efficiency and finally returns the actual available power. For sites of geothermic interest, such as the volcanic island of Ischia in Southern Italy, the results of the application of this new method clearly highlight the most suitable zones for power plants installations.

show abstract

“…However, with end of the Kyoto Protocol, the government of Indonesia has still been planning to increase geothermal power production from geothermal energy. The government plans to increase the geothermal electricity production from 1196 MW to 9500 MW by 2025 [71].…”

Section: The Potential Of Geothermal Energy In Indonesiamentioning

confidence: 99%

Potential of geothermal energy for electricity generation in Indonesia: A review

Nasruddin

Alhamid

Daud

et al. 2016

Renewable and Sustainable Energy Reviews

200

View full text Add to dashboard Cite

Exergy analysis and optimization of Dieng single-flash geothermal power plant

Cited by 73 publications

References 13 publications

Improvement of Double-Flash geothermal power plant design: A comparison of six interstage heating processes

Improvement of Double-Flash geothermal power plant design: A comparison of six interstage heating processes

A tool for evaluating geothermal power exploitability and its application to Ischia, Southern Italy

Potential of geothermal energy for electricity generation in Indonesia: A review

Contact Info

Product

Resources

About