Lesne plošče kot toplotno izolativni material

diplomski projekt

Tadej Grahovac (Author), Željko Gorišek (Reviewer), Sergej Medved (Mentor)

Abstract

Pri izbiri toplotne izolacije moramo biti pozorni predvsem na izolativne lastnosti nekega materiala; energijo, potrebno za izdelavo tega materiala, ter nenazadnje vpliv materiala na toplotno ugodje samega uporabnika. Izbiramo lahko med naravnimi toplotno izolacijskimi materiali, kot so npr. pluta, slama, lesna vlakna, ovčja volna, kokosova vlakna, itd. in med umetnimi oz. sintetičnimi toplotno izolacijskimi materiali, kot so npr. polistiren, perlit, mineralna volna, penjeno steklo, itd. Želeli smo ugotoviti vpliv velikosti in vrste gradnika na prevodnost toplote uporabljenega kompozita. Izdelali smo 3 iverne plošče enake gostote (200 kg/m3). Prva je bila narejena iz iveri velikosti do 1,5 mm, druga iz velikosti 1,5 mm-6,14 mm, tretja pa je vsebovala mešanico iveri obeh velikosti, in sicer v razmerju 50/50. Proizvedli smo še ploščo iz iveri slame, gostote 250 kg/m3. Ugotovili smo, da vrsta in velikost značilno vplivata na prehod toplote. Od vseh 4 plošč je imela najboljše izolacijske lastnosti plošča iz iveri velikosti med 1,5 mm in 6,14 mm, najslabše pa slama.

Keywords

lesne plošče;iverne plošče;slama;toplotna izolacija;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[T. Grahovac]
UDC:	630*862
COBISS:	1850761
Views:	1084
Downloads:	248
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Wood-based panels as a thermal insulation material
Secondary abstract:	When faced with decision which thermal insulation to use we should know: thermal resistance of material, energy needed to produce it, and finnaly, its impact on the thermal comfort of the user. We can choode between natural thermal insulation materials, for example: cork, straw, wood fibres, sheep wool, coconut fibres, etc.; and synthetic thermal insulation materials, such as: polystyrene, polyurethane, perlite, mineral wool, blown glass, etc. We wanted to determine, if the size and type of chip particles have an effect on heat conductivity of the composites. We made 3 types of chipboards that had the same density (200 kg/m3), but different in size of the chips. One was made of chips smaller and equal to 1.5 mm; for the other 1.5 mm-6.14 mm were used; we mixed chips of all sizes for the third. We found that the type and size significantly affected heat transfer. The best insulation properties had the board made of 1.5 mm-6.14 mm sized chips, the worst that of straw board.
Secondary keywords:	wood-based panels;particleboards;strawboard;thermal insulation;
Type (COBISS):	Diploma project paper
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za lesarstvo
Pages:	VIII, 35 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest products and their utilization;gozdni proizvodi in njihova uporaba;
ID:	21935