Pouzdanost određivanja različitog sadržaja vode usitnjenog drva bukve (Fagus sylvatica) pomoću uređaja EVO BIO PC

master's thesis

• Title (english): Reliability of moisture content determination of beech wood (Fagus sylvatica) particles by EVO BIO PC equipment
• Author: Egon Kirasić
• Mentor: Matija Jug (mentor)
• Committee member: Matija Jug (predsjednik povjerenstva)
• Committee member: Nikola Španić (član povjerenstva)
• Committee member: Branimir Šafran (član povjerenstva)
• Granter: University of Zagreb; Faculty of Forestry and Wood Technology; (Institute of Processes Engineering); Zagreb
• Defense date and country: 2019-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Wood Technology; Wood Technological Processes

Abstract

Bukovina je vrlo higroskopna vrsta drva te je podložna brzoj promjeni sadržaja vode. Sadržaj vode u drvu značajno utječe na osnovna svojstva drvnih čestica. Poznavanje sadržaja vode usitnjenog drva bukve važno je za transport radi promjene mase i volumena, projektiranja transportnih sustava i definiranja kapaciteta. Cilj je ovoga rada usporediti sadržaj vode uzoraka dobiven mjerenjem u laboratoriju i na mjestu uzorkovanja pomoću uređaja EVO BIO PC kako bi odredili pouzdanost rezultata dobivenih ovim uređajem. Odabirom odgovarajuće kalibracijske krivulje prema vrsti čestice i masi uzorka izmjeren je sadržaj vode piljevine, blanjevine i peleta. Pouzdanost mjerenja EVO BIO PC uređaja provjerena je gravimetrijskom metodom. Osim sadržaja vode mjerena je nasipna gustoća i faktor rastresitosti sipkog materijala, te granulometrijska analiza. Analizom dobivenih rezultata određen je korekcijski faktor za svaku analiziranu vrstu materijala.

Abstract (english)

Beechwood is a very hygroscopic type of wood and is subject to rapid change in water content. The water content of the wood significantly affects the basic properties of the wood particles. Knowing the water content of shredded beech wood is important for transportation to change mass and volume, design transportation systems, and define capacity. The aim of this paper is to compare the water content of samples obtained in the laboratory and at the sampling site using an EVO BIO PC to determine the reliability of the results obtained with this device. By selecting the appropriate calibration curve according to the particle type and mass of the sample, the water content of sawdust, blanching and pellets was measured. The reliability of the measurement of the EVO BIO PC device was verified by gravimetric method. In addition to the water content, the bulk density and the scattering factor of the bulk material were measured, as well as the granulometric analysis. The analysis of the obtained results determines the correction factor for each material type analyzed.

• Keywords: Biomasa; sječka; pelet; nasipna gustoća; sadržaj vode; gravimetrijska metoda; EVO BIO PC; korekcijski faktor
• Keywords (english): Biomass; wood chips; pellets; bulk density; water content; gravimetry method; EVO BIO PC; correction factor
• Language: croatian
• URN:NBN: urn:nbn:hr:108:063925
• Study programme: Title: Wood Technology Processes; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka drvne tehnologije (magistar/magistra inženjer/inženjerka drvne tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2019-10-18 07:24:31