(a) Draw a representative power curve of a commercial turbine and explain its main characteristics (i.e....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
(a) Draw a representative power curve of a commercial turbine and explain its main characteristics (i.e. phenomena resulting in its typical shape, use illustrations where helpful). Proceed to superimpose a 2nd curve on your graph representing the total power available in the wind and explain with the aid of relevant theory/other limitations why this differs from the turbines power curve. [8] (b) (c) Describe what is meant by the optimum tip speed ratio, Aopt, of a wind turbine and derive the expression shown below for its calculation. Draw a suitably labelled schematic illustrating the variables of interest in your derivation and explain the logic followed. 2opt = 4π/n [10] Find the Roman numeral classification of a wind turbine required at a site where the gust wind speeds noted in the table below were observed from long standing measurements. Relevant equations are provided at end of exam script. [15] Hint: Either graphical or a numerical methods can be used to solve this problem. You may use either. Annual Gust Wind No. of Annual Gust Wind No. of Occurrences over Occurrences over Speed at 10m (m/s) Speed at 10m (m/s) 70 year period 70 year period 12-14 0 24-26 14-16 2 26-28 16-18 6 28-30 18-20 16 30-32 20-22 17 32-34 22-24 10 34- 0 Table 3.1 Number of occurrences of maximum annual gust wind speeds over a 70 year period 8 4 3 2 2 (a) Draw a representative power curve of a commercial turbine and explain its main characteristics (i.e. phenomena resulting in its typical shape, use illustrations where helpful). Proceed to superimpose a 2nd curve on your graph representing the total power available in the wind and explain with the aid of relevant theory/other limitations why this differs from the turbines power curve. [8] (b) (c) Describe what is meant by the optimum tip speed ratio, Aopt, of a wind turbine and derive the expression shown below for its calculation. Draw a suitably labelled schematic illustrating the variables of interest in your derivation and explain the logic followed. 2opt = 4π/n [10] Find the Roman numeral classification of a wind turbine required at a site where the gust wind speeds noted in the table below were observed from long standing measurements. Relevant equations are provided at end of exam script. [15] Hint: Either graphical or a numerical methods can be used to solve this problem. You may use either. Annual Gust Wind No. of Annual Gust Wind No. of Occurrences over Occurrences over Speed at 10m (m/s) Speed at 10m (m/s) 70 year period 70 year period 12-14 0 24-26 14-16 2 26-28 16-18 6 28-30 18-20 16 30-32 20-22 17 32-34 22-24 10 34- 0 Table 3.1 Number of occurrences of maximum annual gust wind speeds over a 70 year period 8 4 3 2 2
Expert Answer:
Answer rating: 100% (QA)
Part a Power Curves Representative Commercial Turbine Power Curve Low wind speeds At low wind speeds the turbine blades cant capture enough wind to generate significant power This is indicated by a fl... View the full answer
Related Book For
Microeconomics An Intuitive Approach with Calculus
ISBN: 978-0538453257
1st edition
Authors: Thomas Nechyba
Posted Date:
Students also viewed these databases questions
-
This case will enable you to practice conducting planning and substantive analytical procedures for accounts in the acquisition and payment cycle. When analyzing the financial data, you may assume...
-
Table 118 identifies twenty-six steps in project planning and control. Below is a description of each of the twenty-six steps. Using this information, fill in columns 1 and 2 (column 2 is a group...
-
Find the lengths of the curves. x = (y 3 /12) + (1/y), 1 y 2
-
Fidelity Corporation offers to hire Ron to replace Monica, who has given Fidelity a month's notice to quit. Fidelity gives Ron a week to decide whether to accept. Two days later, Monica signs an...
-
A 200-N wagon is to be pulled up a 30 incline at constant speed. How large a force parallel to the incline is needed if friction effects are negligible?
-
Show that under quasimonochromatic conditions, mutual intensity \(\mathbf{J}\left(P_{1}, P_{2} ight)\) obeys a pair of Helmholtz equations \[ \begin{aligned} & abla_{1}^{2} \mathbf{J}\left(P_{1},...
-
Joes is a small ice-cream shop located near the local universitys baseball field. Joes serves walk-in customers only. The shop carries 26 flavors of ice cream. Customers can buy cones, sundaes, or...
-
a . Prepare an income statement according to the absorption costing concept. Gallatin County Motors Inc. Absorption Costing Income Statement For the Month Ended July 3 1 Sales $Sales 1 , 8 8 5 , 0 0...
-
Ben Derby is a highly paid scout for a professional baseball team. He attends at least five or six Major League Baseball games a week and watches as many recorded games as he can in order to evaluate...
-
Fairchild Centre is an NFPO funded by government grants and private donations. It was established on January 1, Year 5, to provide counselling services and a drop-in centre for single parents. On...
-
Calculate the implied current interest rates in Togo given that: the 180-day forward rate of the Togo currency is $0.85/T, the current exchange rate is one US dollar equals 1.3456 of the Togo...
-
A company issues 3 6 , 4 0 0 shares of $ 1 par common stock with a fair value of $ 6 per share ( based upon a recent sale of 2 6 shares ) for land. The land is recently appraised at $ 2 0 8 , 0 0 0...
-
TABLE OF CONTENTS 1. Introduction 2. Download Code and Setup 3. Problem 1: Battery Meter Simulation o 3.1. Overview o 3.2. batt update.c: Updating the Display with User Code o 3.3. Battery Meter...
-
Buffalo Company reported the following amounts in the stockholders' equity section of its December 31, 2019, balance sheet. Preferred stock, 10%, $100 par (10,000 shares authorized, 2,200 shares...
-
A rocket sled moves along a track such that its position is given by the function x(t) show below. The values of the constants are A = 2.00 m/s, B = 4.00 m/s. x(t) = At + Bt (a) What is the position...
-
On November 30, 2011, Harris Company arranged to purchase a $250,000 piece of equipment by making a 20 percent down payment and signing a 15-year installment loan contract with interest at 7 percent...
-
Wimot Trucking Corporation uses the units-of-production depreciation method because units-of-production best measures wear and tear on the trucks. Consider these facts about one Mack truck in the...
-
Do we have our priorities in order? We trust our school aged children to be taught by dedicated teachers in our schools, but we pay those teachers only about $50,000 per year. At the same time, we...
-
As we have mentioned several times, the usual property tax is really two taxes: one levied on land value (or on land rents) and the other levied on the value of the improvements of landor the rents...
-
Endowment Effects and Housing Markets: In end-of-chapter exercises 6.9 and 7.6, we derived the curious prediction that homeowners are made better off by housing price fluctuations regardless of...
-
Can you name five types of channels of communication?
-
How would you define your own leadership style? Do you have examples you can share with others on how you lead when called on?
-
Revisit the definition of strategic communication and then review the vignette at the beginning of the chapter. Match the different terms in the definition to the different entities in the vignette.
An Introduction To Probability And Statistics Using Basic 1st Edition - ISBN: 0824765435 - Free Book
Study smarter with the SolutionInn App