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has been cited by the following article:

• TITLE: Exergoeconomic Evaluation and Optimization of Dual Pressure Organic Rankine Cycle (ORC) for Geothermal Heat Source Utilization

  AUTHORS: Dodeye Igbong, Oku Nyong, James Enyia, Benjamin Oluwadare, Mafel Obhua

  KEYWORDS: Geothermal Water, Dual Pressure Organic Rankine Cycle, Exergoeconomic Factor, Optimization

  JOURNAL NAME: Journal of Power and Energy Engineering, Vol.9 No.9, September 30, 2021

  ABSTRACT: In the present study, a dual-pressure organic Rankine cycle (DORC) driven by geothermal hot water for electricity production is developed, investigated and optimized from the energy, exergy and exergoeconomic viewpoint. A parametric study is conducted to determine the effect of high-stage pressure and low-stage pressure variation on the system thermodynamic and exergoeconomic performance. The DORC is further optimized to obtain maximum exergy efficiency optimized design (EEOD case) and minimum product cost optimized design (PCOD case). The exergy efficiency and unit cost of power produced for the optimization of EEOD case and PCOD case are 33.03% and 3.059 cent/kWh, which are 0.3% and 17.4% improvement over base case, respectively. The PCOD case proved to be the best, with respect to minimum unit cost of power produced and net power output over the base case and EEOD case.