Abstract: From a semi-analytical method, analytical expressions for the optimal thermoeconomic efficiencies are found for a Novikov model using a radiative heat transfer law. All this is within the context of finite-time thermodynamics for the three modes of operation: maximum power, ecological regime, and efficient power regime. The analysis includes fuel-related costs and operation and maintenance costs of the power plants that can be studied from the model considered. The obtained expressions are a reasonable approximation compared with the optimum efficiencies numerical results.
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