Opportunities and roadblocks in the decarbonisation of the global steel sector: A demand and production modelling approach

Keramidas, Kimon; Mima, Silvana; Bidaud, Adrien

doi:10.1016/j.egycc.2023.100121

Cited by 6 publications

References 35 publications

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Optimal scheduling of boiler electrification for process decarbonization

Lee,

Foo,

Chen

et al. 2024

AIChE Journal

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Process heat electrification offers the prospect of deep decarbonization of the chemical and allied industries. Replacing fossil fuel‐fired boilers with electric units can reduce carbon emissions if the power mix has a large share of renewables. For multinational firms with plants in multiple locations, the electrification decisions should be scheduled based on grid carbon intensity projections and should also be coordinated among these subsidiaries. In addition, carbon credits can be traded among the multiple sites to allow lagging plants to reduce their carbon footprints. A novel mathematical model has been developed to optimize process heat electrification plans in multinational corporations. The model determines the optimal timing of electrification at each location, and also the necessary level of carbon trading among subsidiaries. An illustrative case study demonstrates how the model can be used to generate electrification plans that are superior to those based on simple heuristics.

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Optimal scheduling of boiler electrification for process decarbonization

Lee,

Foo,

Chen

et al. 2024

AIChE Journal

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Industrial sector pathways to a well-below 2 °C world: A global integrated assessment perspective

Zanon-Zotin,

Baptista,

Rochedo

et al. 2025

Applied Energy

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Combined Supercritical CO2 Brayton Cycle and Organic Rankine Cycle for Exhaust Heat Recovery

Carapellucci,

Di Battista

2024

Journal of Energy Resources Technology

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In order to reduce energy consumption and related CO2 emissions, waste heat recovery is considered a viable opportunity in several economic sectors, with particular attention on industry and transportation. Among different proposed technologies, thermodynamic cycles using suitable organic working fluids seem to be promising options, and the possibility of combining two different cycles improves the final recovered energy. In this paper, a combination of Brayton and Rankine cycles is proposed: the upper cycle has carbon dioxide as the working fluid, in supercritical phase (sCO2), while the bottomed Rankine section is performed by an organic fluid (ORC). This combined unit is applied to recover the exhaust energy of the flue gases of an internal combustion engine (ICE) for the transportation sector. The sCO2 Brayton cycle is directly facing the exhaust gases, and it should dispose a certain amount of energy at lower pressure, which can be furtherly recovered by the ORC-unit. A specific mathematical model has been developed, which makes use of experimental data of the engine to assess a realistic final recoverable energy. The model is able to evaluate the performance of each subsection of the recovery, highlighting the interactions and possible trade-offs between them. Hence, the combined system can be optimized from a global point-of-view, identifying the most influencing operating parameters and also considering a regeneration stage in the ORC unit.

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Opportunities and roadblocks in the decarbonisation of the global steel sector: A demand and production modelling approach

Cited by 6 publications

References 35 publications

Optimal scheduling of boiler electrification for process decarbonization

Optimal scheduling of boiler electrification for process decarbonization

Industrial sector pathways to a well-below 2 °C world: A global integrated assessment perspective

Combined Supercritical CO2 Brayton Cycle and Organic Rankine Cycle for Exhaust Heat Recovery

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