Parametric analysis and thermo-economical optimization of a Supercritical-Subcritical organic Rankine cycle for waste heat utilization

•Thermo-economical optimization of a Supercritical-Subcritical organic Rankine cycle.•The lowerUAsys UAsys does not mean the higher net power output or exergy efficiency.•A higher condensation temperature can benefit improving system economic performance.•The Pareto-optimal solutions for exergy efficiency andUAsys UAsys are 61.25% and 20.08 kW/K, respectively.