Wyniki wyszukiwania - BazTech

1

Evaluation of the impact of supplying a marine diesel engine with a mixture of diesel oil and n-butanol on its efficiency and emission of toxic compounds

Zacharewicz Marcin, Socik Paweł, Wirkowski Paweł, Zadrąg Ryszard, Bogdanowicz Artur

Combustion Engines

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2023

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R. 62, nr 4

40--47

EN

The article presents the results of research on the impact of feeding marine reciprocating internal combustion engines with blends of diesel fuel and n-butanol on their performance parameters. The study includes a research plan and empirical results, in which the engine efficiency and emissions of harmful compounds in the exhaust gases were determined. A promising aspect is also the decrease in the concentration of NOx, which has a positive impact on reducing the toxicity of exhaust gases. An important aspect of the passive defence of a vessel is the reduction of exhaust gas temperature under nominal loads.

2

Opracowanie składu polepszacza glebowego na bazie bazaltu, biowęgla i otrąb owsianych na plon pszenicy jarej

Sobolczyk-Bednarek Justyna, Choińska-Pulit Anna, Łaba Wojciech

Górnictwo Odkrywkowe

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2021

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R. 62, nr 4

17--27

PL

Praca obejmuje opracowanie różnych wariantów mieszanek polepszacza glebowego i testowania go w glebie, w celu poprawy plonu pszenicy jarej. W badaniach wykorzystano 3-czynnikowy układ doświadczalny według Boxa-Behnkena, w celu modelowania wpływu składników takich jak: biowęgiel, bazalt, otręby pszenne na parametry wzrostu roślin w glebie uniwersalnej. Możliwość zastosowania powyższych składników została potwierdzona poprzez wykonaną wcześniej analizę wieloelementową. Prace badawcze polegały na monitorowaniu tempa wzrostu roślin, badania składu gleby po zakończeniu eksperymentu oraz suchej i mokrej masy roślin po zakończeniu doświadczenia. Badania potwierdziły zasadność stosowania dodatków do gleb, szczególnie jeśli chodzi o otręby pszenne i biowęgiel. Dodatek polepszacza nie wpłynął na zwiększenie zawartości metali ciężkich, co wskazuje na możliwości jego wykorzystania.

EN

The work includes the development of various variants of soil improver mixtures and testing them in soil to improve the yield of spring wheat. The study used a 3-factor experimental system according to Box-Behnken in order to model the influence of components such as: biochar, basalt, wheat bran on plant growth parameters in a substrate based on universal soil. The applicability of the above ingredients has been confirmed by a multi-element analysis performed earlier. The research work consisted in monitoring the plant growth rate, examining the soil composition after the end of the experiment, and the dry and wet mass of plants after the end of the experiment. The research confirmed the legitimacy of the use of soil additives, especially when it comes to wheat bran and biochar. The addition of an improver did not increase the content of heavy metals, which indicates the possibility of their use.

3

Modelowanie sił w szlifowaniu obwodowym płaszczyzn według różnych planów badawczych

Habrat W., Żółkoś M., Świder J., Socha E.

Mechanik

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2018

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R. 91, nr 10

929--931

PL

W artykule przedstawiono modelowanie sił w procesie szlifowania obwodowego płaszczyzn ze stali 100Cr6 za pomocą ściernicy M3X60K5VE01-35, przeprowadzone z zastosowaniem centralnego planu kompozycyjnego ortogonalnego (CCF) i planu Boxa-Behnkena. Do planowania eksperymentu oraz analizy wyników wykorzystano program Design-Expert. Modele sił uzyskane w ramach wybranych planów porównano na podstawie współczynników determinacji oraz wartości odchylenia standardowego składnika resztowego.

EN

The paper presents forces modeling with the use of DoE models, such as (Box-Wilson) central composite design in face centered variant (CCF) and Box-Behnken design in a surface peripheral grinding process of 100Cr6 steel with M3X60K5VE01-35 grinding wheel. Experiment design and result analysis were done with the use of Design-Expert software. Force models, obtained with application of selected designs of experiment, were compared on the basis of the coefficient of determination, and values of residual standard deviation.

4

Optimization of Operational Parameters of Foam Sizing Process for Cotton Yarns Based on Plackett-Burman Experiment Design

Zhu B., Liu J., Gao W.

Autex Research Journal

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2018

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Vol. 18, no. 1

61--66

EN

This study was aimed at investigating the process optimization of foam sizing for cotton yarns. In this work, effects of major foam-sizing process factors including size concentration, blowing ratio, stirring speed, pre-wetting temperature, pre-drying temperature, squeezing pressure and drying temperature were studied on the hairiness (more than 3 mm) and abrasion resistance of foam-sized yarns. The combination of Plackett-Burman, steepest ascent path analysis and Box-Behnken design were adopted to optimize the foam-sizing process of cotton yarns. Results revealed that size concentration, blowing ratio and squeezing pressure were significant factors that affected the hairiness and abrasion resistance. Optimum hairiness and abrasion resistance were obtained when the cotton yarns were sized at size concentration of 19.33%, blowing ratio of 4.27 and squeezing pressure of 0.78kN. The theoretical values and the observed values were in reasonably good agreement and the deviation was less than 1%. Verifcation and repeated trial results showed that it has good reproducibility and imparts the foam sizing process of cotton yarns.