Temat: exhaust emission & ecology - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Estimation of emulsified and dissolved oil content in seawater
Autorzy:: Rudź, K.
Toczek, H.
Powiązania:: https://bibliotekanauki.pl/articles/244074.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel
oils
lubrication
exhaust emission
ecology
Opis:: The demand to control the amount of oil discharged to the seawater is the consequence of increasing shipping activities. Oil products enter marine environment on daily basis in the form of fuels, engine oils or crude oils. Each of them have a significant impact on marine life and the coastal water management. Oil content influences many environmental factors, like water quality and bio-optical parameters (e.g. water-leaving radiance, inherent optical properties, seawater fluorescence). It should be measured on regular basis to avoid over or underestimation of those parameters. Currently there are several methods used to estimate the total hydrocarbon content in seawater, mostly based on fluorescence measurements. We present a unique method suitable to determine the concentration of oil products in two forms: the amount of dissolved oil and the amount of oil-in-water emulsion. The method consist of several steps: seawater sampling, vacuum filtering, extracting of oil in n-hexane, fluorescence measurements and calculation of oil concentration in comparison to the reference samples, i.e. the solutions of different types of crude oil in n-hexane. The results have been measured for the samples collected in Southern Baltic Sea during several ship cruises in 2012. We discuss the advantages and disadvantages of presented method in the context of radiative transfer modelling and potential remote detection of dispersed oil.
Źródło:: Journal of KONES; 2013, 20, 1; 287-293
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of doping diesel oil with methyl esters on physicochemical properties of the obtained fuel, in the aspect of its exploitation potential
Autorzy:: Duda, K.
Mikulski, M.
Mickievičius, T.
Powiązania:: https://bibliotekanauki.pl/articles/246618.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel
oils
lubrication
exhaust emission
ecology
Opis:: Vision of depletion of fossil fuels and associated with the usage negative impact on the environment, resulted in increased interest in finding alternative sources of materials, which may be used to power internal combustion engines. Usage of biofuels to power diesel engines offers a wide range of benefits for the user and also the environment. Biodiesel interpreted as fatty acid methyl esters obtained from renewable resources by transesterification of fatty acids, can be used as an alternative fuel to petro-diesel, as well as pure fuel or as an additive to diesel. Due to its “renewable” origin and characteristics, such as biodegradability or lower emissions of toxic components in the exhaust gases, biodiesel is a highly attractive alternative to fossil fuels. Although it is possible to feed CI engines with pure biodiesel, many researchers points lot of, operational and related to combustion processes, problems with usage 100% biodiesel in modern engines, equipped with technologically advanced injection systems. In order to maintain best performance properties, a number of standards have been made. These standards clearly define the parameters that biodiesel must met to be used for powering CI engines. This paper presents comprehensive analysis of properties of pure biodiesel and its mixtures with diesel in terms of usage to feed modern CI engines. Also procedure of obtaining biodiesel, laboratory equipment and procedures were presented. A number of key parameters (density, viscosity, acid value, cold filter plugging point, oxidation stability, sulphur content and flash point) were examined for pure biodiesel and its mixtures. Tests were performed according to procedures outlined in the PN-EN 14214. Based on the results the utility of biofuels and their mixtures was presumed for use in compression ignition engines.
Źródło:: Journal of KONES; 2014, 21, 4; 71-78
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of contribution of biofuels derived from renewable materials in the fuel on the combustion process and toxic compounds emission of compression ignition engine
Autorzy:: Mikulski, M.
Duda, K.
Piętak, A.
Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/242841.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine
fuel
oil
lubrication
exhaust emission
ecology
Opis:: The use of liquid fuels as an energy source for internal combustion engines is unavoidable nowadays, further consumption increases with the development of industry and economic growth of the country. The abundance of the world in fossil fuels is a highly controversial issue; however, irrespective of forecasts concerning deposits of mineral fuels, undisputable fact is that these are resources, which will deplete. Economic, environmental and legislative issues also impose a limitation of use of fossil fuels. Under the problems associated with fossil fuels, an interesting alternative may be fuel derived from renewable sources. Biodiesel understood as a renewable energy source, used to feed compression ignition engines seem to be the ideal solution to meet energy needs, facing so called economic circulation era. Many research results confirm that combustion of pure biofuels in the currently highly advanced injection systems causes many problems. Different biofuel properties from diesel, such as viscosity or density directly influences on combustion process and emission of toxic components in the exhaust gases. Therefore, biodiesel blends with diesel fuel in all proportions; the combustion of such mixtures carries a number of benefits, from consumption reduction of non-renewable resources to reduction of harmful components in the exhaust gases. In this paper, the effect of doping methyl esters on the process of combustion and exhaust gases emissions in a compression ignition engine feed with mixtures of esters and diesel was examined. Tests were performed on four-cylinder, CI Andoria ACDR engine equipped with Common Rail fuel injection system. In order to investigate the combustion process, cylinder pressure and toxic components in exhaust gases steady state measurements were performed.
Źródło:: Journal of KONES; 2014, 21, 4; 343-351
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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