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    Wyświetlanie 1-3 z 3
    Tytuł:
    Implementation of lean instruments in ceramics industries
    Autorzy:
    Ulewicz, Robert
    Kleszcz, Daniel
    Ulewicz, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/1836633.pdf
    Data publikacji:
    2021
    Wydawca:
    STE GROUP
    Tematy:
    ceramics industry
    SME's
    Lean instruments
    Lean implementation
    Opis:
    The article presents the results of the research on the level of implementation of Lean instruments in the ceramics industry. The research was carried out in ceramic factories in Poland and Germany. Based on the results obtained, the most commonly used Lean instruments in the ceramics industry were defined. The dependence of the use of Lean instruments on the size of the enterprise was also determined. It was established that the Lean activities undertaken in the ceramics industry are focused solely on the implementation of individual methods and tools, without a pre-defined goal. This approach in the ceramics industry is ineffective, but unfortunately it is most often used in the implementation of the Lean philosophy, especially in small ceramics enterprises.
    Źródło:
    Management Systems in Production Engineering; 2021, 3 (29); 203-207
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of thermal and air efficiency in trombe wall of modular building
    Autorzy:
    Zhelykh, Vasyl
    Ulewicz, Małgorzata
    Furdas, Yurii
    Shepitchak, Volodymyr
    Powiązania:
    https://bibliotekanauki.pl/articles/28327951.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Opis:
    The proposed Trombe wall design is an innovative and effective solution for addressing issues related to building energy efficiency. The Trombe wall can help reduce a building’s energy consumption, provide optimal indoor temperature, and minimize the building’s environmental impact by utilizing renewable energy sources.The article deals with the study of the heat-air characteristics of the Trombe Wall, which performs the functions of external protection of a modular house, with the aim of further evaluating the possibility of using it as a hybrid protection with additional heating and ventilation functions assigned to it. The results of experimental research conducted on one of the elements of external protection of a modular house in the form of the Trombe Wall are presented. The experimentally obtained graphic dependences were compared with the calculated data and the convergence was evaluated. The proposed design allows you to organize air exchange in the premises with a multiplicity within 1-1.5 h-1, and also provides an opportunity to provide additional thermal power in the amount of 250 W/m2. The article presents the results of experimental studies that allow to evaluate the thermal characteristics of the proposed design of external protection for a modular house. These results indicate that with the given geometric dimensions, in particular with a volume of 14 m3, the thermal power utilized by the Trombe wall is within 0.2-0.7 kW.
    Źródło:
    Archives of Civil Engineering; 2023, 69, 4; 663--678
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the influence of the heat-absorbing surface of an air-cooled solar collector on its thermal and mechanical properties
    Autorzy:
    Zhelykh, Vasyl
    Ulewicz, Małgorzata
    Kozak, Krystyna
    Savchenko, Olena
    Kasynets, Mariana
    Powiązania:
    https://bibliotekanauki.pl/articles/88616.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    solar air collector
    heat-absorbing plate
    flow turbulators
    thermal power
    air channel
    powietrzny kolektor słoneczny
    płyta pochłaniająca ciepło
    turbulatory przepływowe
    energetyka cieplna
    kanał powietrzny
    Opis:
    This paper presents the analysis of existing forms of heat absorbing surfaces of air solar collectors, which gained the greatest popularity in the world. The obtained data allowed to conclude that there is a need for the development of solar collectors with air as a coolant with an improved form of heat absorber, which will reduce the operational and capital costs of solar systems and allow the efficient use of such structures in a moderate climate without additional mechanisms for the transfer of coolant. The use of computer simulation helped to compare the thermal characteristics of air-borne solar collectors of a different design. The substantiation of the expediency of installing as a heat absorber of flow turbulators in the form of a screw has been fulfilled, as well as the height of the air channel of the solar collector has been determined, in which the maximum heating of the transfer medium is observed. In addition, the loss of pressure in the air channel of the solar collector with flow turbulators was determined and the comparison of the obtained data with the values of pressure losses in the air collector of the matrix type and the air collector with V-shaped ribs was made.
    Źródło:
    System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 481-489
    2657-5450
    Pojawia się w:
    System Safety : Human - Technical Facility - Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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