Design Constraints For The Wind Turbine Tower

2146 WordsOct 23, 20149 Pages
ENG 1050 –Materials Selection Report Abstract After careful considerations of material properties with the objectives of the research (minimise cost and weight), the material that would be most suitable for the wind turbine tower is low-alloy steel and for the blades, CFRP. Considering the design constraints, the tower is best designed with a hollow circle frame with 5m (inner) and 3m (outer) radius which translates to a material cost of $4.96 million (tower only) and weighs 7893 tonnes. CFRP is the most suitable material for the blade as it has the lowest density and high fracture toughness and fits the constraints. Additional costs are based on anti-corrosion protection, CFRP production (based on blade length), transport and recycling commitments. Introduction Due to the dying ability of traditional fossil fuels to power the earth’s power requirements, alternative energy sources – such as solar, wind, geothermal and hydropower are beginning to supply the rapidly growing demand. Offshore wind farms, a clean energy source, are being introduced given their consistent and relatively higher power output. The purpose of this exercise is to design a wind turbine tower and blades to meet the service specifications for an offshore environment. This involves manipulating the design – tower shape and dimensions, selected material while minimising the cost of construction and the weight. Given that the turbines are to be offshore, we will also predict possible corrosion damages and

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