Carl-Johan Fogelholm

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In this work, a methodology for building multi-period optimisation model of steam turbine network is presented. The optimisation model can estimate and evaluate the effect of changes to the thermal energy demand of processes. The subject is divided into two parts. In Part I, a method for finding regression models for steam turbine networks using a(More)
The steel industry is characterised by large amounts of CO2 emissions, but there is no easy means to reduce these emissions. One interesting option for the reduction of CO2 emissions could be the utilisation of steelmaking slags for carbon dioxide mineralisation. In this option CO2 is bound with the calcium of the slag material, producing stable carbonate(More)
In this paper mathematical models of steam turbines used in mixed integer nonlinear programming (MINLP) are improved to enable more realistic results from the optimisation and more robust and reliable optimisation models. The modern advanced power plant is in many respects very well optimised, which means that the focus today is on marginal improvements to(More)
The integration of different energy systems, e.g., industrial and municipal, is potentially important for the efficient utilization of energy. It is important that the tools for analysing this type of integration can handle the energy systems on different levels, e.g., regional, site, plant and process levels. In this work, a framework for investigating the(More)
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