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    Wyświetlanie 1-2 z 2
    Tytuł:
    The Influence of Optimization Parameters on the Efficiency of Aluminium Melt Refining by using Physical Modelling
    Autorzy:
    Walek, Josef
    Michalek, Karel
    Tkadlečková, Markéta
    Powiązania:
    https://bibliotekanauki.pl/articles/2174623.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    physical modelling
    refining ladle
    blowing of inert gas
    degassing of the melt
    impeller
    modelowanie fizyczne
    kadź rafinacyjna
    wdmuchiwanie gazu obojętnego
    odgazowanie stopu
    wirnik
    Opis:
    The article describes the influence of optimization parameters on the efficiency of aluminium melt refining by using physical modelling. The blowing of refining gas, through a rotating impeller into the ladle is a widely used operating technology to reduce the content of impurities in molten aluminium, e.g. hydrogen. The efficiency of this refining process depends on the creation of fine bubbles with a high interphase surface, wide-spread distribution, the residence time of its effect in the melt, and mostly on the wide-spread dispersion of bubbles in the whole volume of the refining ladle and with the long period of their effect in the melt. For physical modelling, a plexiglass model on a scale of 1:1 is used for the operating ladle. Part of the physical model is a hollow shaft used for gas supply equipped with an impeller and also two baffles. The basis of physical modelling consists in the targeted utilization of the similarities of the processes that take place within the actual device and its model. The degassing process of aluminium melt by blowing inert gas is simulated in physical modelling by a decrease of dissolved oxygen in the model liquid (water).
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 3; 60--66
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental Protection in Industry 4.0. Opportunities and Threats in Selected Areas
    Autorzy:
    Gajdzik, Bożena
    Oleksiak, Beata
    Pustějovská, Pavlína
    Tkadlečková, Markéta
    Powiązania:
    https://bibliotekanauki.pl/articles/27315802.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    Industry 4.0
    environment
    protection
    resources
    economy
    Przemysł 4.0
    ochrona środowiska
    ochrona zasobów
    gospodarka
    Opis:
    In recent years, the importance of production in cyberphysical systems - CPS characteristic of the new industry concept, which is Industry 4.0 -I 4.0, is gaining importance. Industry 4.0 enforces modification of traditional perception of production. The basis for changes in Industry 4.0 has become Internet of Things - IoT, which gives the opportunity to connect and communicate with each other such areas as mobile solutions, cloud computing, sensors, analytics and cyber security. By new technology, areas that previously operated in enterprises as separate systems can be combined and create new opportunities for industrial production (modernization of production methods and reduce employment). Industry 4.0 brings with it a number of new challenges for producers in the field of environmental protection, and related to the inclusion of cybernetic technology in physical production processes as well as distribution. Production starts and ends on the customer. Industry 4.0 is a collective term for technologies and concepts of value chain organization. The United Nations Organization for Industrial Development indicates the following environmental aspects in the perspective of the development of Industry 4.0, such as: climate change and limited access to resources, primarily to clean energy. It is assumed that changes in the production and functioning of economies will result in a decrease in the emission of harmful compounds into the atmosphere and increase the flexibility of activities for environmental protection. The purpose of this work is to present general directions of changes in the field of environmental protection in Industry 4.0. Authors present the following areas of change: energy management and material management. These areas are opportunities for environmental. In the category of threats, the growing costs of environmental protection and household expenses are pointed out. The work is based on a literature study and statistical data. Statistical data are used: integrated technologies, expenditure and costs of environmental protection, recycling of secondary raw materials and energy consumption for the EU and Poland.
    Źródło:
    New Trends in Production Engineering; 2019, 2, 2; 184-194
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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