ABSTRACT Optimized power‐generation flowsheets incorporating the organic Rankine cycle (ORC) were developed and simulated in Aspen HYSYS and Aspen Capital Cost Estimator for four energy‐recovery configurations. The study evaluates four cases: Case 1 involves steam production and power generation via Gas‐Turbine Generators and ORC systems. Case 2 shows similar performance. Case 3 achieves the highest power output, with a 10% increase, a thermal efficiency of 29.68%, and an exergy efficiency of 17.5%. Case 4 uses an optimized ORC package for simultaneous steam and power production, demonstrating the best technical and economic performance. Case 4 also delivers both electricity and steam at 7354 kg/h. The total project costs for Cases 1–4 are 1.02 × 10⁷, 6.64 × 10⁶, 1.14 × 10⁷, and 8.07 × 10⁶ USD, respectively, highlighting the technical and economic advantages of the proposed ORC configurations.
Pirouzfar et al. (Mon,) studied this question.
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