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24 results on '"Gawron, Jakub"'

11. IDENTYFIKACJA OBECNEGO STANU ORAZ ATRAKCYJNOŚĆ SEKTORÓW BIOPALIW TRANSPORTOWYCH W POLSCE

Author

Kupczyk, Adam, Mączyńska, Joanna, Sikora, Michał, and Gawron, Jakub

Subjects
atrakcyjność sektorów, Agribusiness, biopaliwa transportowe, biokomponenty
Abstract

Dokonano analizy obecnego stanu sektorów biopaliw transportowych w Polsce oraz przedstawiono wyniki badań w zakresie ich atrakcyjności w latach 2007-2016. Krajowe wykorzystanie biopaliw w transporcie oparte jest na stosowania mieszanek paliw konwencjonalnych oraz biokomponentów. Analizą objęto podmioty wykonujące działalność gospodarczą w zakresie produkcji bioetanolu oraz estrów metylowych. Produkcja tych biokomponentów w Polsce odbywa się w ramach działalności 23 pomiotów gospodarczych, których deklarowane zdolności wytwórcze i faktyczna produkcja do 2016 roku wzrastały. Do produkcji biokomponentów wykorzystuje się głównie surowce spożywcze, co wobec polityki UE ukierunkowanej na ich ograniczenie, stanowi istotne wyzwanie w najbliższych latach. Z badań wynika, że atrakcyjność obecnie funkcjonujących w Polsce sektorów biopaliw transportowych systematycznie maleje.

Published
2017
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18. INFLUENCE OF STEAM EXPLOSION ON MATERIAL PROPERTIES UNDER PRESSURE AGGLOMERATION.

Author

ŚWIĘTOCHOWSKI, Adam, GAWRON, Jakub, DĄBROWSKA, Magdalena, and LISOWSKI, Aleksander

Subjects
*AGRICULTURAL engineering, *FORESTRY engineering, *AGRICULTURAL productivity, *WOOD chips, *RAW materials
Abstract

The purpose of the study was to determine the influence of the steam explosion process on the change in properties of the material subjected to this process. Wood chips were used before and after the steam explosion (SE), and pellets made from wood chips subjected to steam explosions (black pellet). The scope of the study included determination of physical and chemical characteristics such as moisture content, combustion heat and calorific value, determination of lignin and hemicellulose, cellulose and hydrogen, carbon, nitrogen and sulfur content. hemicellulose compounds. After the process biomass, there are still mainly cellulose and lignin compounds that are readily biodegradable. The process results in a slight increase in material humidity and lower calorific value, but further processing in the form of agglomeration results in reversal of these effects. [ABSTRACT FROM AUTHOR]

Published
2017
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23. THE INFLUENCE OF HEAT TREATMENT ON THE PHYSICO-CHEMICAL PROPERTIES OF PINEWOOD (PINUS SYLVESTRIS L.).

Author

ZAWADZKI, Janusz, GAWRON, Jakub, ANTCZAK, Andrzej, KŁOSIŃSKA, Teresa, and RADOMSKI, Andrzej

Subjects
*PINE, *HEAT treatment, *CELLULOSE
Abstract

Pine-wood (Pinus sylvestris L.) was thermally modified at temperatures of 160°C and 200°C for 2, 6 and 10 hour periods, respectively. The severe conditions of the heat treatment resulted in decreased mechanical properties (compressive strength and modulus of elasticity) and a decrease in the degree of cellulose polymerization. A comparison of selected mechanical properties and the degree of cellulose polymerization indicated that there was a relationship between them and the temperature and duration of the heat treatment. [ABSTRACT FROM AUTHOR]

Published
2016
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24. A Computer Tool Using OpenModelica for Modelling CO 2 Emissions in Driving Tests.

Author

Tucki, Karol, Orynycz, Olga, Wasiak, Andrzej, Świć, Antoni, Mieszkalski, Leszek, Mruk, Remigiusz, Gola, Arkadiusz, Słoma, Jacek, Botwińska, Katarzyna, and Gawron, Jakub

Subjects
AUTOMOBILE emissions, CARBON emissions, METHYL ether, INTERNAL combustion engine exhaust gas, SPARK ignition engines, LIQUEFIED petroleum gas, ENERGY consumption, STREAM function
Abstract

The transport sector is one of the main barriers to achieving the European Union's climate protection objectives. Therefore, more and more restrictive legal regulations are being introduced, setting out permissible limits for the emission of toxic substances emitted into the atmosphere, promoted biofuels and electromobility. The manuscript presents a computer tool to model the total energy consumption and carbon dioxide emissions of vehicles with an internal combustion engine of a 2018 Toyota Camry LE. The calculation tool is designed in the OpenModelica environment. Libraries were used for this purpose to build models of vehicles in motion: VehicleInterfaces, EMOTH (E-Mobility Library of OTH Regensburg). The tool developed on the basis of actual driving test data for the selected vehicle provides quantitative models for the instantaneous value of the fuel stream, the model of the instantaneous value of the carbon dioxide emission stream as a function of speed and the torque generated by the engine. In the manuscript, the tests were conducted for selected driving cycles tests: UDDS (EPA Urban Dynamometer Driving Schedule), HWFET (Highway Fuel Economy Driving Schedule), EPA US06 (Environmental Protection Agency; Supplemental Federal Test Procedure (SFTP)), LA-92 (Los Angeles 1992 driving schedule), NEDC (New European Driving Cycle), and WLTP (Worldwide Harmonized Light-Duty Vehicle Test Procedure). Using the developed computer tool, the impact on CO2 emissions was analyzed in the context of driving tests with four types of fuels: petrol 95, ethanol, methanol, DME (dimethyl ether), CNG (compressed natural gas), and LPG (liquefied petroleum gas). [ABSTRACT FROM AUTHOR]

Published
2022
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