Res. Agr. Eng., 2004, 50(2):61-65 | DOI: 10.17221/4928-RAE
Change in humidity of solid biofuels
- Mendel University of Agriculture and Forestry, Brno, Czech Republic
Humidity, as one of the most important physical properties of pressed solid biofuels, affects thel calorific value of the biofuel and its consistency. Biofuel humidity depends on the initial humidity of raw material, which varies and depends on many factors. Method of manufacture and place and duration of storage have a considerable effect on solid biofuel humidity as well. Humidity of pressed solid biofuels changes not only during the pressing itself, when temperature increases by compression and a part of contained moisture evaporates, but also in the course of handling and storage under unstable environment conditions with high relative air humidity, when, on the contrary, their humidity gradually increases due to their hygroscopicity. Properties of solid biofuels change with their increasing humidity - their calorific value and consistency decreasing and the share of crumbles increasing.
Keywords: phytomass; solid biofuels; humidity; calorific value
Published: June 30, 2004 Show citation
References
- HARTMANN H., 2000. Influences on the Quality of Solid Biofuels - Casues for Variants and Measures for Improvement. In: Biomass for Energy and Industry. Barcelona, C.A.R.M.E.N: 184-187.
- HENEMAN P., 2003. Fyzikálně mechanické vlastnosti pevných paliv. [Závěrečná zpráva.] Brno, MZLU: 16.
- KOVÁŘOVÁ M., ABRHAM Z., JEVIČ P., ŠEDIVÁ Z., KOCÁNOVÁ V., 2002. Pěstování a využití energetických a průmyslových plodin. URL: http://biom.cz/index.shtml?x = 95502. 11. 7. 2002.
- SLADKÝ V., 1998. Příprava paliva z biomasy: praktická příručka. Praha, ÚZPI: 192.
- USŤAK S., 2002. Nedřevnaté technické plodiny perspektivní pro bioenergetické účely v podmínkách ČR. URL: http://biom.cz/index.shtml?x = 92636. 2. 6. 2002.
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.