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1、1,Design and Manufacturing of a Micro Wind Turbine Blade of Biocomposites,2,Purposes,Micro wind turbine blade design Manufacturing exploration Biomaterial Embedded casting,3,Outline,Micro wind turbine blade design and prototype manufacturing Materials for small wind turbine blade Manufacturing of sm
2、all wind turbine blades Conceptual design for small blade structure with biomaterial and manufacturing Micro blade mould design and manufacturing Micro blade manufacturing with casting mould Discussions Conclusions,4,Micro wind turbine blade design and prototype manufacturing,Blade element momentum
3、method (BEM),Profile for BEM (Burton,et al., Wind Energy Handbook, 2001),5,Micro wind turbine blade design and prototype manufacturing,Airfoil geometry and aerodynamics,Airfoil analysis(Manwell et al., Wind Energy Explained, 2010),6,Micro wind turbine blade design and prototype manufacturing,Promisi
4、ng airfoils,7,Micro wind turbine blade design and prototype manufacturing,Lift and drag coefficients,8,Micro wind turbine blade design and prototype manufacturing,Structure and solid model,9,Micro wind turbine blade design and prototype manufacturing,Rapid prototype,10,Materials for small wind turbi
5、ne blade,Metal: Steel and aluminum Glass and carbon fibre composites Glass fibre: cheap and good properties Carbon fibre: Expensive and high properties Both petro-based and not environmental friendly Wood and bamboo Biocomposites Natural fibres enforced Flax, jute, hemp, sisal: Nottingham Innovative
6、 Manufacturing Research Centre (NIMRC) Hemp: Ris national Laboratory, Denmark Bio-resin Epoxidized soybean oil (ESO) resin and PLA resin: Denmark ESO and a natural resin from Venonia in Ethiopia (NIMRC). ESO in our lab(Dr. Deka),11,Manufacturing of small wind turbine blades,Mechanical fabricating: C
7、NC for wood Hand-lay-up: glass fibre, carbon fibre and wood epoxy Filament winding: petro-based fibre Pultrusion of fiberglass: Bergey Injection: Southwest Windpower Resin Transfer Moulding (RTM): Popular Resin infusion technology,12,Conceptual design for small blade structure with biomaterial and m
8、anufacturing,Profile structure for small blade,Biocomposite design for small wind turbine blade,13,Conceptual design for small blade structure with biomaterial and manufacturing,Profile for mircro wind turbine blade,14,Blade mould design and manufacturing,Three part mould,Tools and preparation,15,Bl
9、ade mould design and manufacturing,Three part mould,Lower mould Three part mould after sealing,16,Blade mould design and manufacturing,Two part mould processing,Preparation Lower mould Upper mould in processing,17,Blade mould design and manufacturing,Final two part mould,18,Blade manufacturing,Blade
10、 in mould,19,Blade manufacturing,Blade before deburring,20,Blade manufacturing,Moulded blade (left) and the prototype blade used to produce the mould (right),21,Discussions,Plaster for mould,Broken moulds,22,Discussions,Bio-resin is thin Vacuum or pressure casting will work better Plaster is not goo
11、d enough for working more blades, but good for one blade with one mould More biocomposites need to be further studied,23,Conclusions,A micro wind turbine blade was designed A micro blade built in liquid casting mould Embedded casting works well with biomaterial inside Casting mould is good for complex geometry and thin airfoil,24,Questions?,个人观点供参考，欢迎讨论,