Modelling and optimization of utility systems

P. S. Varbanov, S. Doyle, R. Smith

    Research output: Contribution to journalArticlepeer-review


    New methods have been developed for the modelling of steam turbines and gas turbines. In particular, the new models give a better description of part-load performance than previously published models. These models have been incorporated, along with those for the other elements of steam systems, into an overall model for utility cogeneration systems. The degrees of freedom of steam systems allow significant opportunity for cost reduction through optimization. This results from the complexity of the interactions within such systems, the continually changing demands on the system and the complexity of cost tariffs for power and fuel. This paper presents improved methods for both the simulation and optimization of utility systems based on the improved models. Using the method presented, significant cost savings can be made by optimizing the system operation at no capital cost. Case studies show a significant potential for cost savings. © 2004 Institution of Chemical Engineers.
    Original languageEnglish
    Pages (from-to)561-578
    Number of pages17
    JournalChemical Engineering Research and Design
    Issue number5
    Publication statusPublished - May 2004


    • Energy efficiency
    • Gas turbine model
    • Steam turbine model
    • Utility system modelling
    • Utility system optimization
    • Utility system simulation


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