Vpliv vlažnosti iverja na porabo energije pri sušenju : diplomsko delo - univerzitetni študij

Penšek, Mitja (author), Medved, Sergej (mentor), Gorišek, Željko (reviewer)

Sušenje iverja je ena od pomembnih faz pri proizvodnji ivernih plošč. Na sušenje vpliva več dejavnikov: vrsta sušilnika, vhodna in izhodna vlažnost materiala, vhodna in izhodna temperatura materiala, vhodna in izhodna relativna vlažnost grelnega medija, vhodna in izhodna temperatura grelnega medija itd. Zniževanje vhodne vlažnosti bi lahko dosegli s pomočjo večjih skladiščnih zalog lesne surovine, istočasno pa bi prispevali k manjši porabi energije pri sušenju iverja. Proučevali smo vpliv vlažnosti vhodne surovine na porabo energentov pri sušenju iverja. Z rotacijskim sušilnikom smo sušili lesno surovino, skladiščeno 12 oziroma 2 meseca. Ugotovili smo, da je za sušenje lesne surovine, skladiščene 12 mesecev, treba manj energije; obremenitev gorilca je zato precej nižja, kar omogoča povečan masni pretok materiala iz silosov svežega iverja v sušilnik oziroma zniža vstopne in izstopne temperature. Vsebnost vlage suhega iverja po sušenju ni pogojena z vhodno vlažnostjo svežega materiala pred sušenjem.

• Language: Slovenian
• Keywords: iverje, vlažnost, sušenje, poraba energije, sušilni medij
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [M. Penšek]
• Year: 2009
• Number of pages: IX, 66 f.
• PID: 20.500.12556/RUL-397
• UDC: 630*861.0:630*847
• COBISS.SI-ID: 1753993
• Publication date in RUL: 11.07.2014

Secondary language

• Language: English
• Title: Influence of moisture content of particles on energy consumption at drying : graduation thesis - university studies

Abstract

Drying of particles is one of the important phases at production of particleboards. Factors as: type of dryer, inlet and outlet moisture of particles, inlet and outlet temperature of material, inlet and outlet relative humidity of heating medium, inlet and outlet temperature of heating medium have influence on drying. Reducing of inlet moisture could be achieved with the help of a large storage for wood raw material. In this way the consumption of energy for drying particles could also be diminished. Therefore, the influence of moisture content of wood on energy consumption at drying of particles was studied. Wood raw material previously stored 12, and the other 2, months was dried in a rotary dryer. It was found out that the first needed less energy for drying, its load of fuel was a lot lower, its mass flux increased, while its input and output temperature lowered. Moisture content of humid particles had no influence on moisture content of dried particles.

• Keywords: particles, humidity, drying, energy consumption, drying medium