International Sugar Journal

Thermo economical optimisation of a cogeneration plant of a sugarcane factory based on the marginal cost concept* [Full subscriber]

Thermo- or exergy-economics is a method to establish the correlation between the cost of energy production – degradation and total cost, given by the sum of the operation cost and the investment cost. In this study, the feasibility of using a Rankine cycle with an extraction condensing steam turbine, as installed in the Paramonga sugar factory, is assessed employing thermodynamic modelling and thermo economical optimisation. The thermodynamic model allows us to obtain a system of equations which can express the cost in terms of independent decision variables, as the amount of bagasse to be burned and the process steam /…

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