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Lesne plošče kot toplotno izolativni material : diplomski projekt
Grahovac, Tadej (Author), Medved, Sergej (Mentor) More about this mentor... This link opens in a new window, Gorišek, Željko (Reviewer)

URLURL - Presentation file, Visit http://www.digitalna-knjiznica.bf.uni-lj.si/du1_grahovac_tadej.pdf New window

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.

Language:Slovenian
Keywords:lesne plošče, iverne plošče, slama, toplotna izolacija
Work type:Diploma project paper (mb13)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2010
Publisher:[T. Grahovac]
Number of pages:VIII, 35 f.
Place:Ljubljana
UDC:630*862
COBISS.SI-ID:1850761 Link is opened in a new window
Views:453
Downloads:110
Metadata:XML RDF-CHPDL DC-XML DC-RDF
 
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Secondary language

Language:English
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.

Keywords:wood-based panels, particleboards, strawboard, thermal insulation

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