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

Alessandro Aiuppa, Rossella Di Napoli, Pecoraino, Langella, Aiuppa, Amoresano, Meo, Paoletti

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The paper proposes a method to evaluate the potential for electric power production at any site of possiblegeothermal interest. Accounting for geological data of the reservoirs, the method allows the computationof the available electrical power of the investigated site. Electrical energy production from geothermalsources is realized through different techniques, such as single flash and double flash, dry steam, and binaryORC 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.
Original languageEnglish
Pages (from-to)303-312
Number of pages10
JournalApplied Energy
Volume139
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

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