Classification of geothermal resources in Indonesia by applying exergy concept. (October 2018)

• Record Type: Journal Article
• Authors: Mohammadzadeh Bina, Saeid; Jalilinasrabady, Saeid; Fujii, Hikari; Pambudi, Nugroho Agung
• Is Part Of: Renewable & sustainable energy reviews. Volume 93(2018)
• Page Start: 499
• Page End: 506
• Publication Date: 2018-10
• Subjects: Indonesia -- Classification -- Geothermal -- Exergy; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.rser.2018.05.018
• Languages: English
• ISSNs: 1364-0321

Abstract

Abstract: Indonesia is well-known for its reputation for possessing the world's largest geothermal potential, which has been characterized by high temperature geothermal resources' concentration. The geothermal energy potential of Indonesia has been estimated to be 28, 617 MW, which is about 40% of the world's geothermal potential. However, only about 4.5% is being utilized as electrical energy supply in this country. This paper comprises the Indonesian geothermal resources, based on their capability of doing work and efficiency. In this study, currently operating geothermal power plants in Indonesia have been classified, based on the exergy concept and the Specific Exergy Index (SExI). The results of SExI values show that nine geothermal fields are classified as high exergy resource with their SExI values exceeding 0.5, and two remaining power plants with SExI values between 0.05 and 0.5 are classified as medium geothermal resources. Highlights: Geothermal power plants in Indonesia have been classified based on exergy concept. Specific Exergy Index (SExI) is developed to eliminate the effect of ambient condition on exergy. SExI value was used as a tool to classify the Indonesian geothermal resources. SExI values are divided into low (SExI < 0.05), medium and high (SExI > 0.5) categories. Resources have been classified based on their SExI vales as low, medium and high exergy resources.