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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao EMU DSpacearrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Master thesis . 2013
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Moderniseeritud Savonius tüüpi tuulik

Modernized wind turbine of Savonius type
Authors: Kirillov, Sergei;

Moderniseeritud Savonius tüüpi tuulik

Abstract

Selle magistritöö eesmärk oli vaadata läbi uue vertikaalteljega tuuliku tüüpi. Praegu arendatakse rohkem horisontaalteljega tuulikuid, aga minu arvates on vertikaalteljega tuulikud universaalsemad ja neil on rohkem kasutusvõimalusi. Sellel tööl oli tehtud kaks eksperimentaalsed mudelit. Üks oli tehtud arvuti keskkonnas SolidWorks lisandi abil CosmosFloWorks 2007. Ja teine mudel oli tehtud käsitsi iseseisvalt. Kui teoreetilisel osal mitte arvestada aerodünaamilised nüanssid, siis uue tuuliku tüüpil pöördemoment on umbes 2,8 korda suurem kui klassikalisel Savoniusel. Peale mudeli katsetamist olid saadud andmed, mille põhjal on võimalik järeldada, et moderniseeritud Savonius tüüpi tuulik hästi töötab madala tuule kiirusega. Töötades madala tuule kiirusega rootor omab suure pöördemomendi. Samuti väikese tuule kiirusega tuulik võimaldab toota rohkem energiat. See toimub see tõttu, et rootori kujulise tuulik töötab kasutades takistusjõudu ja suure tuule kiirusega ning suure pöörlemissagedusega ta hakkab ületada suurema õhu takistuse, millest pidurdab ja võimsus kaob. Sellel tööl oli toodud printsipiaalselt uus seade, mis töötab uue tuuliku tüüpi abil. Analüüsides selle seadet sain, et rootori tuuliku kasutades, mitte elektrienergia vaid soojus energia tootmiseks, on võimalik saada rohkem energiat soojusenergia ekvivalendis. Samuti selle seade kasutamisel rootori kasutegur on mitu korda suurem kui tavalise kasutamise juhul. Torude kontuur selles süsteemis võib olla kuni kakssada meetrit ja seaded võivad asuda majast kaugelt. Selle tüüpi tuuliku läbi vaadates võiks järeldada: esiteks, Savoniuse käima hakkamiseks on vaja väike tuule kiirust. Teiseks, Savonius tüüpi tuulik on vaikne ja me saame seda kasutada hoone katusel, näiteks ventilatsiooni jaoks. Või misiganes seade pöörlemiseks linnas, kus on palju hooneid, mis vähendavad tuule kiirust. Savoniust on väga lihtne teeninduses sel põhjusel, et paigaldatakse maa ja/või pinna lähedal.

The aim of this graduation work is to study the possibilities of using a new type of wind engine, called modernized Savonius, for producting electricity in regions, where the annual average wind speed is lower than 5...6 m/s. The first part of the work gives an overview how efficciently one can use the energy of the wind by using different types of wind engines. The most common types of wind engines are acquainted and the basic difference in efficiency of extracting the energy from the wind of both drag- and lift-machines is presented. Finally the comparison and the optimum average wind speed for using the different types of machines is given. The second part of the work gives an overview of teoretical calculations for new type of windwheel. Also, for new type of windwheel is given teoretical examples for some conditions. In third part of the work is given some aerodynamic nuance, what is not scaned in work and what could be useful for new type of windwheel. The fourth part of the work gives an overview of practical calculations for new type of windwheel. Practical valculetions are done by PC and by seft done model. Also, simile of useful power that can be get from the new type of windweel by diferents wind speeds and moments. In fifth part of the work is given overwiev and data analys for the calculations, that was done in practical part. In sixth part of the work is given example, what is possible use this type of windwheel. And analys how this windwheel are possible use for more power generation.

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Estonia
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Keywords

magistritööd

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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