Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61, 1377-1382
Published online 2013-09-28

Influence of annealing temperature of straw briquettes on their density and hardness

Marek Rynkiewicz1, Petr Trávníček2, Eva Krčálová2, Jan Mareček2

1Department Construction and Use of Technical Equipment, West Pomeranian University of Technology in Szczecin, ul. Papieża Pawła VI/3, 71-459 Szczecin, Poland
2Department of Agriculture, Food and Environmental Engineering, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

The study evaluated the effect of annealing temperature of non-wood, herbaceous ground briquettes on their density, hardness and fracture incidence. The study showed an average density of hay briquettes at 20 °C was 1 256.99 kg·m3, whereas at 60 °C density increased to 1 369.44 kg·m−3. The analysis showed statistically significant differences in the average densities of briquettes, depending on their temperature. Temperature of briquettes also had a statistically significant effect on their hardness. In case the temperature increases from 20 to 60 °C both longitudinal and transverse cracks were observed for all samples.


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