Economical evaluation of a low-enthalpy geothermal resource located in an arid-zone area

Sara Walker, Brian Agnew, Salah Masheiti, Mosbah Talbi

Research output: Contribution to journalArticlepeer-review


In this work an economical evaluation that established the viability of a low enthalpy geothermal resource as an energy source in north Africa is presented. The factors considered included the payback period, average rate of return, net present value, and net benefit-cost ratio. The model was based on utilising the energy source to energise four models that comprised thermal equipment consisting of water/air cooled single/half effect lithium bromide water mixture absorption chillers and an R-245fa organic Rankine cycle. These modelled cycles were based on the energy demand for Waddan city a community in southern Libya which has a demand for combined cooling/electricity only or cooling/electricity with district hot water supply. The results revealed that all of the proposed simulated stand-alone models, except the water-cooled half effect chiller, are not economically viable unless they are heavily subsidized or combined with the district hot water supply at least in the winter season.
Original languageEnglish
Pages (from-to)1013-1021
JournalJournal of Energy and Power Engineering
Issue number7
Publication statusPublished - 2012


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