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Fireball 2: Energieffektiv fiber produktion
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2009 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Fireball 2 : Energy effective fibre production (English)
Abstract [en]

The development within the textile industry is always ongoing with development of new and

better textiles, which often mean the use of non-natural materials like polyester. This doesn’t line

up with the work shared around the world against an improved environment, so the idea came to

use a form of linen fibers instead of polyester as the reinforcing material together with cotton.

The idea was to use flax, linen of low quality, which is seen as a waste product and garbage in

the production of high quality linen and flax seed oil. This flax of low quality needs to be

separated before it can be used in cotton spinning machines. Fireball 2 is just that, a process to

separate flax fibers through the treatment of a technique called electrohydraulic discharge.

The thesis works goal is to evaluate the Fireball 2 process ability to separate flax fiber. To

achieve this goal the process is described, which phenomenon that treat the flax fibers and how

they arise, as well as the components included in the system. Much of the work involves tests of

different electrodes as it shows that the electrode strongly contributes to the discharge property,

which is very important for the systems ability to treat flax.

Fireball 2 is marketed as an environmental technique as it doesn’t require any chemical additives

for the separation; the only thing needed is flax, water and electricity. For it to be considered

environmentally friendly is has to be efficient, therefore the thesis rapport discuss the discharge


The result of the fiber separation tests show that Fireball 2 separates flax with good results, both

in the form of analysis of separated fibers as well as energy efficiency. Measures under

performed tests have shown that the efficiency is high, close to 100 percent of the energy stored

in the system is released during treatment of the flax. Analysis made at De Montfort University

of the treated flax show that the flax is well separated.

When it comes to the electrode an satisfactory design of the electrodes conductive part have been

found during this thesis work, although more work is required to find an isolation material that

can withstand the high strain that the plasma channel cause.

Abstract [sv]

Utvecklingen inom textilindustrin gar standigt framat med utveckling av nya och battre textiler,

vilket ofta innebar anvandning av icke naturliga material som polyester. Da detta inte gar i linje

med det ovriga arbetet runt om i varlden mot en forbattrad miljo, fanns en ide att anvanda lin

fibrer istallet for polyester som forstarkningsmaterial tillsammans med bomull. Iden var att

anvanda flax, vilket ar lin av lagre kvalitet, som anses vara en restprodukt och avfall vid

produktionen av hogkvalitativt lin och linolja. Detta lin av lag kvalitet maste separeras innan det

kan anvandas i spinnmaskiner for bomull och Fireball 2 ar just en process for att separera flax

fibrer genom att behandla dem med en teknik kallad elektrohydraulisk urladdning.

Examensarbetets mal ar att utvardera Fireball 2 processens formaga att separera lin fibrer. For att

kunna gora detta beskrivs processen, vilka fenomen som behandlar flax fibrerna och hur dessa

uppkommer, samt systemets uppbyggnad med de olika komponenterna. Mycket av arbetet

involverade tester av olika elektroder, da det visade sig att just elektroden bidrog starkt till

urladdningens egenskaper som ar valdigt viktig for systemets formaga att behandla flax.

Fireball 2 marknadsfors som en miljovanlig teknik da den inte kraver nagra kemiska tillsatser for

separeringen, det anda som behovs ar flax, vatten och elektricitet. For att den ska anses vara

miljovanlig maste effektiviteten vara hog, darfor behandlar rapporten urladdningens effektivitet.

Resultatet fran fibersepareringstesterna visar att Fireball 2 processen separerar flax med goda

resultat, bade i form av analyser av separerade fibrer som energi effektivitet. Matningar under

utforda tester har visat att effektiviteten ar hog, nara 100 procent av energin lagrad i systemet

anvands for att behandla flax fibrerna, vilket ar nara optimalt. Samtidigt visar analyser gjorda pa

De Montfort Universitetet i Leicester att det behandlade flaxet ar val separerat.

Vad det galler arbetet med elektroden sa har en tillfredstallande utformning av elektrodens

ledande del hittades under utforandet av detta examensarbete, dock kravs fortsatt arbete med att

hitta ett isolationsmaterial som kan motsta de hoga pafrestningar som plasma kanalen


Place, publisher, year, edition, pages
, MMK 2009:81 MDA 352
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-100077OAI: diva2:542778
Available from: 2012-08-03 Created: 2012-08-03 Last updated: 2012-08-03Bibliographically approved

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