Table QI(a) Description Tower R Tower S Tower T (a) Table Q1(a) shows 3 wind turbine tower and its parameter. Wind speed, v 9 m/s 15 m/s 25 m/s (i) Calculate the power converted from the wind into rotational energy for all Blade length, / 20 m 15 m 5m turbines. Air density, p 1.45 kg/m Power Coefficient, C 0.52 0.59 0.48
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- JThe efficency of fran depends on Niscosity (^) ,angular velocity (w), diameter of rotor (D) and the discharge) » Express the efficiency of dimensionless. density ) - dyvomic in termsFind the size of a wind turbine rotor (diameter in m) that will generate 100kW of electrical power in a steady wind (hub height) of 7.5 m/s. Assume that the air density is 1.225 kg/m3, Cp = 16/27 and n = 1. %3DQ:1 A model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 2.00 m/s? until its engines stop at an altitude of 150 meters. (a) Describe the motion of the rocket after its engines stop. (b) What is the maximum height reached by the rocket? (c) How long after liftoff does the rocket reach its maximum height? ay = 9,8 down (d) How long is the rocket in the air? Signs engines-- cut som I am Sorry !!! 50t
- PROPAGATION OF ERROR You are tasked to supervise the design of 0.5MW wind turbine to be constructed in a Wind Farm in Pililla, Rizal. Suppose the design criteria are as follows: The air density as surveyed after 2 year period averaged at 1.225 kg / cubic meter. The sweeping diameter of the rotor blades is 125m, and the anemometer reading in the area amounts to 4.2m/s on a 2 year period of survey. What is the theoretical power output of the turbine assuming 100% efficiency of operation? Your answer must be in kW and in two decimal places with correct signs. In the previous problem, if the diameter measurement is off by 0.1m and the anemometer reading is also fluctuating by 0.05m/s and if the error measurement for theoretical power output must be limited to 3%, WHY OR WHY NOT should you accept the design? * Show complete solution in paper.PROPAGATION OF ERROR You are tasked to supervise the design of 0.5MW wind turbine to be constructed in a Wind Farm in Pililla, Rizal. Suppose the design criteria are as follows: The air density as surveyed after 2 year period averaged at 1.225 kg / cubic meter. The sweeping diameter of the rotor blades is 125m, and the anemometer reading in the area amounts to 4.2m/s on a 2 year period of survey. if the diameter measurement is off by 0.1m and the anemometer reading is also fluctuating by 0.05m/s. In the design specifications given, if the actual measurement of power via the substation amounts to exactly 530kW and given that the windspeed is off by 0.05m/s, what could have been the error in the measurement of diameter? Your answer must be in 3 decimal places and in correct signs and measurement. Show complete solution in paper.A ship leaves port with drafts 7.6 m F and 7.9 m A; 400 tonnes of bunkers are burned from a space whose centre of gravity is 15 m forward of the centre of flotation, which is amidships. TPC 20 tonnes. MCT 1 cm = 300 tonnes m. Find the minimum amount of water which must be run into the forepeak tank (centre of gravity 60 m forward of the centre of flotation) in order to bring the draft aft to the maximum of 7.7 m. Find also the final draft forward.
- QUESTION 1 Consider Port Plyllis wind site, assume you are installing a G80-2000 Wind turbine (k=2.67. and c=8.4m's at 10 m (from data fit). What is the . of increased aunual energy produced fiom 50m to 100m hub height. Consider the site roughness length is 0.017m. Use the Wind power calculator. A 9% B. 229 C. 12% D. 1%Design a 1 MW wind Turbines: given data tower height : 80 mblade length: 38 maverage wind speed: 6.9 m/s power: 1 MWA particle P of mass m = 6 kg is travel- ing at vp = -8i m/s and has a net force F = -5i N acting on it. At a certain instant, 0 = 25° and the distance from O and Hp, at this instant. P.2) %3D to P is L = 3 m. Calculate HP. %3D j L.
- The data presented in the figure shows a generic 2.5MW wind turbine power curve and a wind speed data at hub height. 2500 0.25 2000 0.20 1500 0.15 1000 0.10 50 0.05 0.00 o 2 4 6 8 10 12 14 16 18 20 Wind speed (m/s) wWind speed frequency Power generated by wind turbine Estimate the Annual Energy Production that this wind turbine is able to generate. Power (MW) ksuanbay paads puMQ2: A wind farm is proposed to be built outside of Baghdad Airport, The airport wind data obtained at a zref = 10 m., gave a Weibull wind frequency distribution fit with coemciens of k = 1.54 andc = 3.78 m/s. The wind turbines in the proposed wind farm have a rated power of Prated = 1.5 MW, a rotor radius of R = 35 m, and a hub height of H = 65 m. The rated wind speed for the wind turbines is Vrated = 8 m/s and the cut-out wind speed is Veutout = 20 m/s. Find the followings: (a) Based on the Weibull coefficients at zref= 10 m., determine the new Weibull coefficients for the wind speed at the wind turbine hub height. Assume n =0.23. (b) What is the probability for the wind at the hub height to be between Vrated and Veutoul? (c) Based on this, what is the expected Annual Energy Production (AEP) [MW-h], for one of the wind turbines in the wind farm? Q3:In an undisturbed airstream inside a wind tunnel, the pressure is 101325 Pa, density is 1.225 kg/m^3 and velocity is 200 m/s. What is the velocity if the pressure is 90,000 Pa.