Economic Dispatch of a Grid-connected Cogeneration Ferrochrome Plant

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A bottoming and organic rankine cycle cogeneration system for heat recovery and power generation for a South African smelter is studied. The goal is to investigate the potential benefits of generating electrical power from the process waste heat to supply its on-site loads and feed the generated electricity to utility grid when it is beneficial to do so. To achieve this, an economic power dispatch (EPD) model is developed to optimally manage the power flows to the on-site loads and that to the utility grid. The heat recovery process for power generation is modeled first to facilitate the development of the EPD model that maximizes the plant's economic benefits in terms of minimizing electricity cost and maximizing revenue from selling the generated electricity. The potential of generating cooling power through a lithium bromide-water solution absorption refrigeration cycle is also investigated and the economic benefits of the proposed system, when operated by the EPD model designed, are also studied.




Zhang, L., Chennells, M., & Xia, X. (2017). Economic Dispatch of a Grid-connected Cogeneration Ferrochrome Plant. In Energy Procedia (Vol. 105, pp. 1974–1979). Elsevier Ltd.

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