Behavior of B20 fuels in arctic conditions
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Kuupäev
2019
Kättesaadav alates
Autorid
Sirviö, K.
Niemi, S.
Help, R.
Heikkilä, S.
Hiltunen, E.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Several renewable and sustainable liquid fuel alternatives are needed for different
compression-ignition (CI) engine applications to reduce greenhouse gas (GHG) emissions and to
ensure proper primary energy sources for the engines. One of the shortcomings of several bio oils
and first generation biodiesels has been their cold properties. Still, the need for alternative fuels
is also present in arctic areas where the storing of the fuels may become problematic. The main
aim of the current study was to determine how the storage related properties of fuel blends change
if the fuels first freeze and then melt again. The samples were analyzed three times: as fresh, and
after the first and second freezing-melting phase transitions.
The share of renewables within the blends was 20 vol-%. Rapeseed methyl ester (RME) and
animal-fat based methyl ester (AFME) were blended with LFO in a ratio of 80 vol-% of LFO and
20-vol% of RME or AFME.
The investigated and compared properties were the FAME content of the neat FAMEs, and
kinematic viscosity, density, oxidation stability index, and acid number of the blends. Cold filter
plugging point was measured for AFME and its blend. According to the results, the quality of the
FAMEs and their blends did not change significantly during the freezing over. The freezingmelting phase transition seems, thus, not to be as big a threat to the fuel quality as the high
temperatures are. According to the results of this study, the studied fuels were feasible after the
freezing-melting phase transition.
Kirjeldus
Article
Märksõnad
alternative fuels, fuel blends, storage conditions, arctic conditions, fuel stability, medium-speed engines, articles