Tag Archives: storage conditions

2203–2210 J. Bradna, J. Šimon, D. Hájek, D. Vejchar, I. Polišenská and I. Sedláčková
Comparison of a 1 t and a 55 t container when storing spelt grain in mild climate of the Czech Republic
Abstract |
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Comparison of a 1 t and a 55 t container when storing spelt grain in mild climate of the Czech Republic

J. Bradna¹*, J. Šimon¹, D. Hájek¹, D. Vejchar¹, I. Polišenská² and I. Sedláčková²

¹Research Institute of Agricultural Engineering, p. r. i., Drnovská 507, CZ161 01 Prague 6 - Ruzyně, Czech Republic
²Agrotest fyto, Ltd., Havlíčkova 2787/121, CZ767 01 Kroměříž, Czech Republic
*Correspondence: jiri.bradna@vuzt.cz

Abstract:

Maintaining a suitable microclimate inside the storage space is the most significant factor in maintaining good quality of stored grain for small farmers. This article is aimed at evaluating the influence of outdoor climatic conditions on the storage conditions, specifically the temperature of stored grain in two storage containers. One structure was a 4 × 6 m cylindrical container (55 t capacity) with a steel wire mesh wall lined with a textile shell. Spelt grain (Triticum spelta) was also stored simultaneously at the same location in a fabric intermediate bulk container (FIBC) bag with maximum capacity of 1 t. Neither structure was mechanically aerated. Grain moisture and temperature were monitored during the spring and start of the summer period of the year 2017 because of the biggest differences between the night and day temperatures. For monitoring of the grain microbiological changes samples were taken for laboratory tests during the whole experiment. Grain quality parameters measured during storage included the bulk density, crude protein, falling number, germination, gluten content, sedimentation index and contamination by mycotoxins. Monitored outdoor environment parameters were temperature, dew point and relative humidity. Results showed a strong dependence of the stored material temperature on the outside temperature in the case of FIBC bags (coefficient of determination R2 = 0.927), whereas the dependence was weaker in the larger structure (R2 = 0.625). Mycotoxins monitored during the period were below the detection limit in both cases.

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1207–1215 K. Sirviö, S. Niemi, R. Help, S. Heikkilä and E. Hiltunen
Behavior of B20 fuels in arctic conditions
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Behavior of B20 fuels in arctic conditions

K. Sirviö*, S. Niemi, R. Help, S. Heikkilä and E. Hiltunen

University of Vaasa, School of Technology and Innovations, PL 700, FIN-65101 Vaasa, Finland
*Correspondence: katriina.sirvio@univaasa.fi

Abstract:

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 freezing-melting 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.

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