Question: A variable-speed HAWT has a power coefficient of 0.45 at its rated wind speed v r and maintains its rated power for wind speeds between

A variable-speed HAWT has a power coefficient of 0.45 at its rated wind speed v_r and maintains its rated power for wind speeds between this value and its cutout speed of 25 m/s. If the rotor diameter is 100 m, and the rated power is 3 MW, what is v_r?

Step by Step Solution

★★★★★

3.36 Rating (159 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

According ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related The Physics Energy Questions!

Tableau Dashboard Activity 5-1 Account for Uncollectible Accounts Using the Aging Method Review the Tableau visualization, and then answer the questions that follow. Total Accounts Receivable Amount...

Axial-momentum analysis led to a power coefficient C P = 4a(1 a) 2 for a HAWT eq. (30.7) Compute the power coefficient another way: start from the tangential force per unit length f T in the simple...

Cycling For a touring bicyclist the drag coefficient C(f air = 2 ) is 1.00, the frontal area A is 0.463 m2, and the coefficient of rolling friction is 0.0045. The rider has mass SO.O kg, and her bike...

A punch-press geared 10:1 is to make six punches per minute under circumstances where the torque on the crankshaft is 1300 lbf ?ft for s. The motors nameplate reads 3 bhp at 1125 rev/min for...

The original 5 MW, three-bladed HAWT, made by RE Systems has a tip diameter of 126.3 m and a rated wind speed of 13 m/s. The cut-in wind speed was 3.5 m/s and the onshore cut-out wind speed is 25...

1. A small business uses 15,200 kWh monthly. To meet this need the business owner is considering the purchase of a micro wind system. The wind turbine has a cut-in wind speed of 5.0 mph, a cut-out...

2 . A variable - speed HAWT with rotor diameter of 8 0 m operates with cut - in speed of \ ( 4 \ mathrm { ~m } / \ mathrm { s } \ ) , cutout speed of \ ( 3 0 \ mathrm { ~m } / \ mathrm { s } \ ) at...

Wind frequency data obtained at a height of 10 meters at a particular location is summarized by a Weibull distribution with = 9 m/s and k = 1.3. The land use is best characterized as rough pasture....

Please review and critique for any errors. provide feedback \fNon-symmetrical vs Nonsymmetrical Symmetrical . In a cambered airfoil ( nonsymmetrical), the mean camber line and Symmetrical chord line...

3 . A variable - speed HAWT with rotor diameter of 1 1 0 m operates with cut - in speed of \ ( 4 \ mathrm { ~m } / \ mathrm { s } \ ) , cut - out speed of \ ( 3 0 \ mathrm { ~m } / \ mathrm { s } \ )...

Instructions: Please write your answers clearly, explain each step, and use proper mathematical notation. You can use Microsoft Excel, or any other software or online graphing tool to plot the...

The aldolase reaction can proceed in reverse as an enzymatic aldol condensation. If the enzyme were not stereospecific, how many different products would be obtained?

Z Space, Incorporated, is a new company and currently has negative earnings. The company's sales are $2.0 million and there are 145,000 shares outstanding. a. If the benchmark price-sales ratio for...

Formula 1 point You are considering buying a stock that will pay a dividend of 5 3 . 1 8 in one year. The dividend is expected to grow by 4 . 9 4 % every ycar, forever. How much will you be willing...

D9-56. Determining the Reporting of an Investment Assume your company acquires 20% of the outstanding common stock of APEX Software as an investment. You also have an option to purchase the remaining...

A field is given as G = [25/(x 2 + y 2 )](xa x + ya y ). Find (a) A unit vector in the direction of G at P(3, 4,2); (b) The angle between G and ax at P; (c) The value of the following double integral...

By expressing diagonals as vectors and using the definition of the dot product, find the smaller angle between any two diagonals of a cube, where each diagonal connects diametrically opposite corners...

Given the points M(0.1,0.2,0.1), N(0.2, 0.1, 0.3), and P(0.4, 0, 0.1), find (a) The vector R MN ; (b) The dot product R MN R MP ; (c) The scalar projection of R MN on R MP ; (d) The angle between R...

In todays world, most anyone can make purchases even without the money in hand to do so. There are many types of hard and fast rules for when it is acceptable to use credit. Today you will be...

Research question: Does consuming alcohol impact reaction times? A sample of 60 adults was obtained. All participants were at least 21 years old and were told that they would be drinking a beer...

Sisters Corp expects to earn $5 per share next year The firm's ROE is 15% and its plowback ratio is 50% If the firm's market capitalization rate is 10% Calculate the price with the constant dividend...