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How much ideal efficiency should practical turbine have?(a) 10 – 12%(b) 18 – 25%(c) 80 – 90%(d) 50 – 70%This question was posed to me by my college professor while I was bunking the class.Asked question is from Velocity and Power from Wind in portion Wind Energy of Energy Engineering |
Answer» CORRECT answer is (d) 50 – 70% The EXPLANATION: As wind TURBINE wheel cannot be completely closed, and because of spillage and other effects, practical turbines have 50 to 70% of the ideal efficiency. The real efficiency η is the PRODUCT of this and ηmax and is the ratio of an actual to TOTAL power. P = ηPtot. |
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