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    Wyświetlanie 1-3 z 3
    Tytuł:
    Analysis of Temperatures in the Cold Storage of Finished Products
    Autorzy:
    Bogdanovská, Gabriela
    Stehlíková, Beáta
    Kačur, Ján
    Powiązania:
    https://bibliotekanauki.pl/articles/102539.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    cold storage warehouse
    temperature monitoring
    temperature fluctuations
    statistical evaluation
    Kruskal-Wallis test
    Bartlett test
    Nemenyi’s test
    magazyn chłodniczy
    monitorowanie temperatury
    wahania temperatury
    ocena statystyczna
    test Kruskala-Wallisa
    test Bartletta
    test Nemenyi
    Opis:
    The analysis of temperatures in the cold store of finished products was performed due to the occurrence of temperature fluctuations. The analysis in the report was conducted using Kruskal-Wallis test, Bartlett test, Nemenyi’s test Statistical analysis of measured values in individual months. The relationship between the temperature in the cold store and the outside air temperature was investigated. Quality tools were also used in the thesis. The causes of temperature fluctuations were determined by Cause-Effect diagnostics. The relationship between the main causes was analyzed with Relation Diagram. Corrective measures were then determined to minimize the temperature fluctuations in the cold store.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 3; 54-66
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proposal of a Method for Measuring Gas Flow in a Heating Furnace: A Simulation Study
    Autorzy:
    Pástor, Marcel
    Durdán, Milan
    Kačur, Ján
    Laciak, Marek
    Flegner, Patrik
    Powiązania:
    https://bibliotekanauki.pl/articles/2023997.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    modeling
    simulation
    flue gas
    burners
    gas flows
    volume zones
    Opis:
    Metallurgy, as one of the oldest industries, is currently experiencing a technological boom in an effort to increase production efficiency with the least possible impact on the environment. Modeling methods make it possible to design and simulate a technological process or technological equipment for conditions that take into account the above-mentioned aspects. For this reason, the article focuses on the use of simulation modeling using accessible computer technologies in order to improve the operation of heating aggregates with the metal-bearing batch, such as a continuous heating furnace. The paper describes the methodology for modeling the flow of flue gases in the working space of a gas heating furnace, which results in their enthalpy representation. A simulation study was performed for a gas-fired furnace used to heat gates. Three case studies were simulated with set values of on and off burners and fuel flow to them. The effect of these parameters on the total amount of recirculated flue gas was investigated. The results showed that the fuel flow regulation to the burners at the material inlet into the furnace had a higher effect on the overall recirculation than the switching on and off the burners on the furnace's outlet side. The results pointed to critical points on the inner shell of the furnace, which could be the most critically thermally stressed, for example, in the places of the collision of opposing flue gas flows.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 2; 1-12
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Soft-Sensing in Batch Annealing Based on Finite Differential Method and Support Vector Regression
    Autorzy:
    Kačur, Ján
    Durdán, Milan
    Laciak, Marek
    Flegner, Patrik
    Powiązania:
    https://bibliotekanauki.pl/articles/103270.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    annealing
    steel coil
    temperature measurement
    soft-sensing
    finite differences method
    support vector regression
    wyżarzanie
    cewka stalowa
    pomiar temperatury
    wyczuwanie
    metoda różnic skończonych
    regresja wektora nośnego
    Opis:
    The temperature of annealed steel coils is a determining variable of the future steel sheets quality. This variable also determines the energy consumption in operation. Unfortunately, the monitoring of coil inner temperature is problematic due to the furnace environment with high temperature, coil structure, and annealing principle. Currently, there are no measuring principles that can measure the temperature inside the heat-treated product in a non-destructive manner. In this paper, the soft sensing of inner temperature based on the theory of non-stationary heat conduction and approach based on Support Vector Regression (SVR) was presented. The results showed that a black-box approach based on the SVR could replace an analytic approach, though with lesser performance. Several annealing experiments were performed to create a training data set and model performance improvement in the estimation of inner coil temperatures. The proposed software based on non-stationary heat conduction can calculate the behavior of inner coil temperature from the measured boundary temperatures that are measured by thermocouples. The soft-sensing principles presented in this paper were verified under laboratory conditions and on the data obtained from a real annealing plant.
    Źródło:
    Advances in Science and Technology. Research Journal; 2019, 13, 4; 70-86
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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