Combined CFD, material and system level analyses - Case Naantali power plant

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

    Abstract

    This paper discusses the use of mathematical models in solving engineering problems. Undoubtedly there is a need for closer co-operation and co-use of different tools to enhance solving industrial engineering problems. This is shown through a recent case study, where thermal behaviour of evaporator pipes in a power plant was analysed. The main tool is the study was Apros, which is a software for dynamic modelling and simulation of industrial processes, and related automation and electrical systems. Additionally, the work was supported by CFD and thermal stress calculations. A model of a once-through evaporator of a coal power plant was developed, and used to analyse thermal behaviour of the evaporator tubes. Proper knowledge of the boundary conditions at the flue gas side were required. This information was obtained from the existing CFD results on the same evaporator. The main interest in simulations was the differences in pipe temperatures between two alternative control strategies of the evaporator: level control mode, and superheating mode. The simulation results were temperatures, and further interpretation was needed to draw the conclusions of the risk for the material. So yet another mathematical approach was needed to answer the original questions. The modelling part of the case is briefly described, the most interesting results are shown, and the combined use of modelling is discussed.
    Original languageEnglish
    Title of host publicationMultiscale modelling and design for engineering application
    PublisherVTT Technical Research Centre of Finland
    Pages106-115
    ISBN (Electronic)978-951-38-7914-3
    ISBN (Print)978-951-38-7913-6
    Publication statusPublished - 2013
    MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

    Publication series

    SeriesVTT Technology
    Number77
    ISSN2242-1211

    Fingerprint

    Evaporators
    Power plants
    Computational fluid dynamics
    Pipe
    Industrial engineering
    Level control
    Flue gases
    Thermal stress
    Automation
    Coal
    Boundary conditions
    Mathematical models
    Temperature
    Hot Temperature

    Cite this

    Lappalainen, J. (2013). Combined CFD, material and system level analyses - Case Naantali power plant. In Multiscale modelling and design for engineering application (pp. 106-115). VTT Technical Research Centre of Finland. VTT Technology, No. 77
    Lappalainen, Jari. / Combined CFD, material and system level analyses - Case Naantali power plant. Multiscale modelling and design for engineering application. VTT Technical Research Centre of Finland, 2013. pp. 106-115 (VTT Technology; No. 77).
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    Lappalainen, J 2013, Combined CFD, material and system level analyses - Case Naantali power plant. in Multiscale modelling and design for engineering application. VTT Technical Research Centre of Finland, VTT Technology, no. 77, pp. 106-115.

    Combined CFD, material and system level analyses - Case Naantali power plant. / Lappalainen, Jari.

    Multiscale modelling and design for engineering application. VTT Technical Research Centre of Finland, 2013. p. 106-115 (VTT Technology; No. 77).

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

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    AB - This paper discusses the use of mathematical models in solving engineering problems. Undoubtedly there is a need for closer co-operation and co-use of different tools to enhance solving industrial engineering problems. This is shown through a recent case study, where thermal behaviour of evaporator pipes in a power plant was analysed. The main tool is the study was Apros, which is a software for dynamic modelling and simulation of industrial processes, and related automation and electrical systems. Additionally, the work was supported by CFD and thermal stress calculations. A model of a once-through evaporator of a coal power plant was developed, and used to analyse thermal behaviour of the evaporator tubes. Proper knowledge of the boundary conditions at the flue gas side were required. This information was obtained from the existing CFD results on the same evaporator. The main interest in simulations was the differences in pipe temperatures between two alternative control strategies of the evaporator: level control mode, and superheating mode. The simulation results were temperatures, and further interpretation was needed to draw the conclusions of the risk for the material. So yet another mathematical approach was needed to answer the original questions. The modelling part of the case is briefly described, the most interesting results are shown, and the combined use of modelling is discussed.

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    Lappalainen J. Combined CFD, material and system level analyses - Case Naantali power plant. In Multiscale modelling and design for engineering application. VTT Technical Research Centre of Finland. 2013. p. 106-115. (VTT Technology; No. 77).