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Wyszukujesz frazę "Čarnogurská, M." wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    The Effect of Temperature Pyrolysis Process of Used Tires on the Quality of Output Products
    Autorzy:
    Jasminská, N.
    Brestovič, T.
    Čarnogurská, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/386859.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    piroliza
    zużyte opony
    temperatura
    gaz pirolityczny
    olej pirolityczny
    pyrolysis
    used tires
    temperature
    pyrolytic gas
    pyrolytic oil
    solid residue
    Opis:
    Pyrolysis together with gasification and combustion create a group of so called thermic processes. Unlike the combustion it is based on thermic decomposition of organic materials without any access of oxidative media. Within the pyrolytic process, three main fractions are created: solid residue, pyrolytic gas and organic liquid product - pyrolytic oil. The presented article examines the effects of pyrolysis operational conditions (above all, temperature) on gas products, solid residues and liquid fractions.
    Źródło:
    Acta Mechanica et Automatica; 2013, 7, 1; 20-25
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of nitrogen oxides formation applying dimensional analysis
    Autorzy:
    Carnogurska, M.
    Brestovic, T.
    Prihoda, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/185009.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    modelowanie matematyczne
    analiza wymiarowa
    dimensional analysis
    nitrogen oxides
    mathematical modelling
    Opis:
    The article presents the procedure for how to establish a mathematical model of nitrogen oxides formation based on the theory of dimensional analysis. The model is based on selected physical quantities (parameters) measurable during regular operation of a heat generation plant. The objective of using dimensional analysis to describe nitrogen oxides formation is to show that between operating parameters of the combustion equipment and the NOx formation there is a significant correlation. The obtained results, which are further described in this article, have proved this fact. The obtained formula expressing nitrogen oxides formation, based on dimensional analysis, applies universally to any boiler fuelled by coal, gas or biomass. However, it is necessary to find C, m, n constants for the formula by experiment, individually for each type of boiler and used fuel. The experiment is based on on-line measurements of selected operational parameters for a given boiler, combusting a certain type of fuel with its actual moisture content and calorific value. The methodology, described in this article, helps to find relationships between the operational parameters and the formation of NOx emissions for a particular furnace. The developed mathematical model has been validated with boilers fuelled by black coal and biomass. Both the results obtained from direct measurements of NOx in both types of boilers, and the results obtained by calculation using equation based on the dimensional analysis, are in a very good accord. When burning coal, the variation between NOx expression from the model and the on-line measurements ranges between -12.23 % and + 9.92 %, and for burning biomass between -0.54 % and 0.48 %. The intention of the authors is to inform the professional community about the suitability of the dimensional analysis to describe any phenomena for which there is currently no exact mathematical formulation based on differential equations or empirical formulas. Many other examples of dimensional analysis applications in practice may be found in the work of Carnogurska and Prihoda (2011).
    Źródło:
    Chemical and Process Engineering; 2011, 32, 3; 175-184
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence Of Calcite On The Ash Flow Temperature For Semi-Anthracite Coal From Donbas District
    Autorzy:
    Čarnogurská, M.
    Příhoda, M.
    Pyszko, R.
    Širillová, L.
    Palkóci, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/184964.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    węgiel
    popiół
    temperatura zasilania
    symulacja numeryczna
    coal
    ash
    additive
    flow temperature
    numerical simulation
    Opis:
    This paper presents the results of research focused on the lowering of ash flow temperature at semianthracite coal from Donbas district by means of additive (calcite) dosing. Ash fusion temperatures were set for two coal samples (A, B) and for five various states (samples of ash without any additives, with 1%, with 3%, with 5% and with 7% of the additive) in total. The macroscopicphotographic method was used for identifying all specific temperatures. Obtained outputs prove that A type coal has a lower value of sphere temperature than B type coal in the whole scope of percentage representation of the additive. The flow temperature dropped in total from 1489°C to 1280°C, i.e. by 14% during the test of coal of type A with 7% of the additive; while it was near 10% for coal of type B (from 1450°C to 1308°C). Numerical simulations of the process showed that it is not effective to add an additive with a grain size lower than 280 μm by means of wastevapour burners.
    Źródło:
    Chemical and Process Engineering; 2014, 35, 4; 515-525
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of hydrogen storage capacity in Ca72Mg28 alloy
    Autorzy:
    Brestovič, T.
    Jasminská, N.
    Lázár, M.
    Saks, K.
    Bednárová, L.
    Šulíková, M.
    Čarnogurská, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/957955.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    metalhydrid
    hydrogen
    hydrogen storage
    storage capacity of hydrogen
    Opis:
    This article discusses the measurement of hydrogen storage capacity in Ca72Mg28 alloy that has been produced by melt spinning. The alloy has an amorphous structure in which there is an assumption of hydrogen storage of acceptable concentration. The research is to analyse the possibility of desorption of the gas without recrystallization of the alloy. Subsequently, the problem of reversible hydrogen storage is examined at temperatures between 410–450 °C in the pressure range 0 to 3.5 MPa. This paper deals with the indirect determination of the amount of heat generated in the absorption of hydrogen by using the calorimetric method. In the conclusion there is a comparison of the storage capacity of hydrogen in the amorphous and crystalline structure of the alloy.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 4; 103-110
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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