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DC Field | Value | Language |
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dc.date.accessioned | 2022-05-17T12:54:28Z | - |
dc.date.available | 2022-05-17T12:54:28Z | - |
dc.date.issued | 1985 | - |
dc.identifier.citation | Dalmas, M. (1985). Wind tunnel tests on a straight-bladed vertical axis wind turbine (Bachelor’s dissertation). | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/95843 | - |
dc.description | B.ENG (HONS) | en_GB |
dc.description.abstract | The Straight-Bladed Vertical Axis Wind Turbine is a machine which has received scarce attention until recently. This turbine can offer high efficiencies at minimal construction and maintenance costs. This type of turbine extracts energy from the wind by virtue of the dynamic reaction of the air on the rotor blades and as such most of the factors which influence the rotor's efficiency are related to the blades. As such, in establishing a set of performance curves for this type of wind turbine the effects of altering blade pitch and blade chord were investigated. For this purpose a model with balsa wood blades, 0.21m in diameter, was constructed. The model allowed a number of pitch offsets and blade chords to be tested, at various Reynolds Numbers, in the Wind-Tunnel at the University of Malta. The test results were presented in the form of Power and Torque Coefficient as functions of Tip Speed Ratio. They were obtained by measuring the shaft torque, the rotor's rotational speed and the condition of the air entering the test-section of the Wind-Tunnel. During the tests the Reynolds Numbers investigated varied between 176000 and 236000. The range of tested pitch offsets was -4° to +4. Because of the small size of the model only two chord values could be tested. | en_GB |
dc.language.iso | en | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Vertical axis wind turbines | en_GB |
dc.subject | Wind tunnel testing | en_GB |
dc.subject | Dynamics | en_GB |
dc.subject | Wind power | en_GB |
dc.title | Wind tunnel tests on a straight-bladed vertical axis wind turbine | en_GB |
dc.type | bachelorThesis | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.publisher.institution | University of Malta | en_GB |
dc.publisher.department | Faculty of Engineering. Department of Mechanical Engineering | en_GB |
dc.description.reviewed | N/A | en_GB |
dc.contributor.creator | Dalmas, Martin (1985) | - |
Appears in Collections: | Dissertations - FacEng - 1968-2014 Dissertations - FacEngME - 1968-2015 |
Files in This Item:
File | Description | Size | Format | |
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B.MECH.ENG._Dalmas_Martin_1985.pdf Restricted Access | 6.6 MB | Adobe PDF | View/Open Request a copy |
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