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    Wyświetlanie 1-3 z 3
    Tytuł:
    Correlations between air pollutant concentrations in selected urban and rural areas in Poland
    Autorzy:
    Stelęgowski, Artur
    Powiązania:
    https://bibliotekanauki.pl/articles/106013.pdf
    Data publikacji:
    2019
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    air pollution
    statistical analysis
    nitrogen dioxide
    particulate matter
    zanieczyszczenie powietrza
    analiza statystyczna
    dwutlenek azotu
    Opis:
    Correlations between concentrations of selected air pollutants were analyzed in different areas in central Poland from 2012-2016. Three neighboring voivodeships (Lower Silesian, Lodz, and Masovian), were selected for which specific measurement locations were designated in urban and rural areas. The characteristics of the location of monitoring stations allowed to distinguish the following types of measurement stations: “urbantransport”, “urban-background", "suburban-background", "town-background", and "rural-background". Therefore, using the Pearson's linear correlation coefficient, it was possible to analyze the interrelations between the occurrence of air pollution in various types of areas. It was found that the coefficient changed along with the type of area. Moreover, it turned out that the coefficient decreased in each voivodeship along with a decrease in the population density of the analyzed areas. In addition, concentrations of various air pollutants in given areas were compared. Also, it was observed that the strongest correlations occur between the results of calculations from measurement stations located in the same province.
    Źródło:
    Acta Innovations; 2019, 31; 14-22
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of air distribution using “age of air” concept in the selected boiler room
    Autorzy:
    Cichowicz, Robert
    Stelęgowski, Artur Wacław
    Powiązania:
    https://bibliotekanauki.pl/articles/1178274.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CFD technique
    age of air
    boiler plant
    Opis:
    The aim of a ventilation system is to provide a recommended amount of air (with the best possible quality) for both industrial buildings, including boiler plants, as well as for any other type of a room or a building. Its effectiveness depends on applied air distribution type, which results from the location of air supply and exhaust elements, as well as from velocity and temperature of supplied air. Influence of a ventilation system on air quality in a room can be determined using the air parameters or the "age of air" concept. For this reason, the numerical calculations of the "local mean age" of air (LMA) were made for the selected industrial boiler plant, located in the city of Lodz in Poland, and the analysis was made basing on the results of experimental measurements. The whole analysis was performed using the DesignBuilder program, which is based on the Computational Fluid Mechanics (CFD) method.
    Źródło:
    World Scientific News; 2017, 88, 2; 168-182
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of convection along hot surface of equipment in the selected boiler room
    Autorzy:
    Cichowicz, Robert
    Stelęgowski, Artur Wacław
    Powiązania:
    https://bibliotekanauki.pl/articles/1179007.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CFD technique
    air parameters
    boiler plant
    Opis:
    The combustion processes, that are taking place in combustion units in boiler plants, result in heat production. Some of the heat is being exchanged between the thermal installation equipment and the air in such type of a room. In consequence, both the temperature of equipment’s surface and of the indoor air rises. This results in natural convection effect, in which the air heated up from the equipment rises upwards (along with that part of the heat generated by combustion), and in its place flows the air of lower temperature. As a result of the phenomenon, there is a change in airflow in the room and a removal of part of heat gains from equipment. The numerical analysis of convection along hot surface of technological facilities and equipment was made on the basis of the numerical calculations of air parameters in the selected boiler room. Boundary conditions for the calculations were determined using the results of building energy simulation and the results of experimental measurements.
    Źródło:
    World Scientific News; 2017, 87; 150-162
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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