diplomsko delo
Laura Lavrenčič (Author), Borut Kosec (Mentor)

Abstract

Lesni peleti so lesena goriva, ki jih uporabljamo v sodobnih pečeh in ogrevalnih sistemih. Imajo relativno nizko vsebnost higrovlage, kar pri njihovem zgorevanju omogoča relativno visoke izkoristke. V večini primerov so izdelani iz lesa bukve in smreke. Uporaba pelet tako z vidika energetske neodvisnosti kot tudi ekološke spremenljivosti je izredno dobrodošla. V okviru diplomskega dela so predstavljeni lesni peleti, proizvodnja lesnih pelet, njihovo zgorevanje ter veljavni standardi na navedenem področju. Predstavljen je tudi kalorimetrski sistem IKA C200, s katerim določamo zgorevalno toploto lesnih pelet. Poleg tega so opisani procesi, ki se odvijajo med zgorevanjem. Analizirali smo lesne pelete različnih proizvajalcev, ki so danes dostopni na slovenskem trgu. Za vsako posamezno vrsto lesnih pelet smo pri eksperimentalnem delu izmerili delež higrovlage, pepela, ter izvedli elementarno analizo pepela na vrstičnem elektronskem mikroskopu in določili najpomembnejši energetski parameter – zgorevalno toploto. Zanima nas ali dodana destilirana voda v kalorimetrski posodi vpliva na zgorevalno toploto.

Keywords

lesni peleti;kalorimeter;zgorevalna toplota;kurilnost;kakovost;vzorec;meritev;analiza;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL NTF - Faculty of Natural Sciences and Engineering
Publisher: [L. Lavrenčič]
UDC: 669
COBISS: 133850627 Link will open in a new window
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Other data

Secondary language: English
Secondary title: analysis of calorific value of wood pelets
Secondary abstract: Wood pellets are wood fuels used in modern stoves and heating systems. They have a relatively low hygromoisture content, which enables relatively high efficiency when burned. In most cases, they are made of beech and spruce wood. The use of pellets is extremely welcome both from the point of view of energy independence and ecological variability. As part of diploma thesis presents wood pellets, the production of wood pellets, their combustion, and the applicable standards in the aforementioned field. The calorimeter system IKA C200 is also presented, which is used to determine the heat of combustion of wood pellets. In addition, the processes that take place during combustion are described. We analyzed wood pellets from various manufacturers that are available on the Slovenian market today. For each individual type of wood pellets, we measured the proportion of hygromoisture and ash in the experimental work, and carried out an elemental analysis of the ash with a scanning electron microscope and determined the most important energy parameter – calorific value.
Secondary keywords: wood pellets;calorimeter;calorific value;heating value;quality;sample;measurement;analysis;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Naravoslovnotehniška fak., Oddelek za materiale in metalurgijo
Pages: XI, 45 str.
ID: 17399249