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Wyszukujesz frazę "Krupińska, Andżelika" wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Influence of Effluent Quality from Sludge Dewatering on Electricity Consumption
Autorzy:
Hyrycz, Michał
Ochowiak, Marek
Krupińska, Andżelika
Włodarczak, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/27315661.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
wastewater
sludge dewatering
flocculant
energy savings
Opis:
During the dewatering process, centrate is produced, which is returned to the beginning of the technological system. The quality of the resulting centrate, and therefore the size of the returned load of pollutants, affects the demand for electricity in the process of biological wastewater treatment. The following study presents the results of centrate quality tests at five wastewater treatment plants located in Poland. The dependence between suspended solids content and ammonia and COD concentrations in the centrate was determined. It was estimated that an increase in the overall suspended solids leads to an increase in COD by about 1.15 kgCOD/kgTSS. No correlation was found between TSS concentration and ammonia. It was calculated that the complete elimination of suspended solids from the sludge would reduce the electricity consumption for all five objects by about 535 MWh/y.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 3; 50--55
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the dedusting process in a rectangular chamber filter
Autorzy:
Krupińska, Andżelika
Ochowiak, Marek
Włodarczak, Sylwia
Matuszak, Magdalena
Kaźmierczak, Julia
Powiązania:
https://bibliotekanauki.pl/articles/2174826.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
purifying air
chamber filter
PIV
Opis:
Purifying air from dust is a very important, current topic. There are many methods to minimize the amount of dust, one of them being chamber filters. This paper presents the research results of a newly designed rectangular chamber filter. The efficiency of the dedusting process is influenced by contamination properties, but also by the construction of the apparatus, inlet, and outlet location, the ratio of certain dimensions, and the gas flow rate. The airflow containing solid particles is a multi-phase, difficult-to-describe issue, therefore an attempt to determine the trajectory of particle movement in the apparatus was carried out using the PIV method. A decrease in the dedusting efficiency was observed with the increase of the gas flow rate, as well as for smaller diameters of the solid particles. The obtained values of the efficiency of the apparatus are comparable with the values obtained for the constructions discussed in other papers.
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 4; 72--77
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of pressure drop, spray angle, and sprinkling intensity distribution in the spray stream produced by the water-foam nozzle
Autorzy:
Ochowiak, Marek
Krupińska, Andżelika
Włodarczak, Sylwia
Matuszak, Magdalena
Zielińska, Patrycja
Czernek, Krystian
Witczak, Stanisław
Wilk, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2106484.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
fire safety
harvest fire prevention
atomization
spraying intensity
pressure drops
Opis:
This paper summarises a series of large-scale fire suppression tests conducted to simulate a fire in the big surface and/or surface sprinkling. The subject of this paper is the research on water spraying with the use of the Turbo Jet 2011 water-foam nozzle manufactured by Supon Białystok. The results discuss the pressure losses caused by the flow through the discharge hose, spray angle, and the intensity of surface sprinkling. The greatest stream ranges and the highest maximum values of the sprinkling intensity were obtained at the capacity of 400 l/min, and a solid spray angle. The smallest values were obtained at 200 l/min, a pressure of 5 bar, and a solid spray angle. The actual pressures taking into account the losses in the hose section were calculated. As for the highest firefighting effectiveness of the stream, the authors recommended the following parameters: semi spray angle, 200 l/min, and 2.5 bar.
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 2; 42--49
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of twist drill bits wear: the effect of the composition and structure of the steels
Autorzy:
Prałat, Karol
Krupińska, Andżelika
Ochowiak, Marek
Włodarczak, Sylwia
Matuszak, Magdalena
Ciemnicka, Justyna
Koper, Artur
Wójcicka, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/2174822.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
drilling
high-speed tool steel
EDS
tool wear
microstructure
Opis:
The aim of the study was to relate the infl uence of the chemical composition, structure, and basic properties as hardness of the tested drill bits on resistance to their wear. The chemical composition of the drill bit was investigated using the electric excitation emission spectrometry method and EDS microanalysis. Metallographic specimens were prepared and observed to determine the structure of each tool. Hardness tests were carried out on the shank and the working part of the tools. Material wear tests were carried out on the basis of measuring the wear of the drill bit flank. It has been shown that the appropriate selection of the chemical composition and heat treatment has a signifi cant impact on the wear resistance of cutting tools, which directly translates into their quality.
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 3; 8--13
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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