Вісники та науково-технічні збірники, журнали
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Item Determining the effect of oil after frying fish for the production of biofuels with a fractional composition of FAME(University of Engineering and Economics in Rzeszow, 2019-03-20) Wcisło, G.; Pracuch, B.; Tomyuk, V.; University of Agriculture in Krakow; Lviv Polytechnic National UniversityThe aim of the study was to determine the impact of the fish frying process on the distillation properties of FAME and its mixtures with diesel fuel. The fish was fried at 160 °C for 2 hours. Frying one serving lasted 6 minutes. The frying oil was a mixture of 50 % (v/v) rapeseed oil and 50 % (v/v) sunflower oil. The study showed that FAME biodiesel made from unused (pure) oil has similar distillation properties. The largest differences were observed for distillation temperatures of 85 % and 100 % and the final temperature of the distillation process. This may indicate a slightly lower purity of FAME produced from used cooking oil. In such a biofuel there may be more less volatile mono- and diglycerides or other chemicals that, e.g. after frying, remain in oil. It must be said, however, that they are not solid particles because they have been separated from the oil by filtration.Item Impact of various types of soybean cake to soy straw briquettes on the heat of briquette combustion(University of Engineering and Economics in Rzeszow, 2019-03-20) Wcisło, G.; Pracuch, B.; Łagowski, P.; Kurczyński, D.; Tomyuk, V.; University of Agriculture in Krakow; Lviv Polytechnic National UniversityThe paper presents results of research demonstrating the effects on heat of combustion of adding press cake from three varieties of soyben Erica, Mavka and Sirelia to soyben stalk based briquette. The conducted research shows that heat of combustion of soyben stalk was 15.2 [MJ∙kg-1], much lower than the heat of combustion of press cake from four. Press cake heat of combustion from the most effective Erica soyben variety was 23.4 [MJ∙kg-1], or 54 % (w/w) more than that of rape stalk. Press cake heat of combustion from the least effective soyben variety was 19.8 [MJ∙kg-1], or 30 % (w/w) more than that of soyben stalk. Adding 20 % (w/w) of press cake during briquette production Erica varieties resulted in an increase in heat of combustion by approximately 10.5; and a 40 % (w/w) addition resulted in a further increase of approximately 20.4 %, a 60 % (w/w) addition of press cake increased heat of combustion by approximately 31.6 whereas an 80 % (w/w) press cake content increased heat of combustion by more than 38.8 %.Item Influence of Perkins 1104D-44TA motor powered with SME supply on the CO, NOx, THC and O2 emissions(Lublin, 2018-06-26) Wcisło, G.; Kurczyński, D.; Łagowski, P.; Pracuch, B.; Leśniak, A.; Tomyuk, V.; University of Agriculture in Krakow; Malopolskie Centre for Renewable Energy Sources "BioEnergia”; Kielce University of Technology; Lviv National Agrarian UniversityThe paper presents the results of research on the impact of Perkins 1104D-44TA engine powered with sunflower oil methyl esters and, for comparison, with diesel fuel, in terms of emission of CO, THC, NOx and O2. The tests were carried out on the engine test stand. During the tests, the engine worked according to the external speed characteristics in the range from 1000 to 2200 rpm. The esters used for powering the tested engine were produced using the GW 200 reactor designed and made by Grzegorz Wcisło, one of the co-authors of the paper. The results of the tests carried out showed a decrease in the concentration of carbon monoxide in the exhaust gases, hydrocarbons when powering the engine with sunflower oil esters in relation to powering the engine with diesel fuel. At the same time, the concentration of nitrogen oxides and oxygen in the exhaust gases increased. The reduction of THC and CO emissions is the result of better combustion and afterburning of fuel. However, the increase in the amount of oxygen in the exhaust gases results from the fact that in the biofuel structure there is oxygen which is used in combustion and reduces the oxygen demand from the atmosphere. On the other hand, the increase in NOx emissions is the result of a higher combustion temperature than when the engine is powered by diesel fuel.Item Influence of the SME run Perkins 1104D-44TA engine on the power and torque as well as unitary and hourly fuel consumption(Lublin, 2018-06-26) Łagowski, P.; Kurczyński, D.; Wcisło, G.; Pracuch, B.; Leśniak, A.; Tomyuk, V.; Kielce University of Technology; University of Agriculture in Krakow; Malopolskie Centre for Renewable Energy Sources “BioEnergia”; Cracow University of Economics; Lviv National Agrarian Universityhe article presents the results of tests determining the impact of using sunflower oil methyl esters on power and torque as well as unitary and hourly fuel consumption of the Perkins 1104D-44TA engine. Biofuels were produced in the Fuel and Energy Laboratory belonging to the Maopolskie Centrum Energii Odnawialnej (Małopolskie Center for Renewable Energy Sources), while analyzes of the selected fuel parameters were performed both in the above-mentioned laboratory and in the Liquid Biofuels Laboratory at the University of Agriculture in Krakow. Engine tests were carried out on the engine test stand at the Kielce University of Technology. During the tests, the engine worked according to the external speed characteristic. The results of the tests have shown that the engine supplied with the SME achieves slightly lower values of both power and torque than in the case of commercial fuel oil type Ekodiesel Ultra from the ORLEN S.A company. There was also an increase, especially in the case of higher unitary fuel consumption. Hourly fuel consumption was higher when supplied with SME in relation to the diesel fuel supply, although not as much as unitary consumption. The increase in SME consumption at the engine supply can be explained by the lower fuel value of SME, which contains oxygen in its structure.Item Angle of injection impact on the combustion process in a compression-ignition engine(Lublin, 2018-06-26) Łagowski, P.; Kurczyński, D.; Wcisło, G.; Pracuch, B.; Tomyuk, V.; Kielce University of Technology; Malopolskie Centre for Renewable Energy Sources "BioEnergia”; Lviv National Agrarian UniversityThe article presents the impact of hydrocarbon fuel angle of injection on heat emission characteristics in a compression – ignition AD3.152 engine. The angle of injection has a significant impact on the primary engine operating parameters and combustion process indicators, which include the proportion of combustion which occurs according to kinetic and diffusion models, heat emission rate and the combustion process duration. The characteristics describing emission of a relative heat quantity were determined on the basis of an analysis of actual, indicator diagrams averaged over 100 runs, under the assumption that the combustion process ends by the time the exhaust valve opens. During the test, the engine operated according to an external speed characteristic. Tests were carried out for three fuel angles of injection: 13, 17 and 21 crankshaft rotation degrees.