Fiven the following data: Blade length I= 52 m 3. air density p= 1.23 kg/m Power coefficient Cp= Cp,max = 0.59 %3D Plot the power output P as a function of wind speed v on the interval [0 m/s, 30 m
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- Assume that annual energy requirement of an industry is 20000 kWh . DETERMINE size of wind turbine that is required to be installed to meet the energy requirement . Following assumptions are taken into account for estimation Annual energy requirement - 20000 kWh Propeller type wind machine is used . Coefficient of performance -0.40 Wind speed at 15 meter height is 5 meter / sec ( if the turbine hub is placed at the height other than 15 meter , the wind speed should be estimated as shown in " vertical wind speed variation section Density of air - 1 kg / m Capacity factor -0.30PROPAGATION 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.Suppose we got the following data during a test of a 2- stroke engine in which gas is usedas a fuel:Diameter of the piston = 149 mmStroke length = 179 mmClearance volume = 0.88 literrpm of the engine = 302Indicated mean effective pressure = 6.0 barGas consumption = 6.0 m3/hCalorific value of the gas (fuel) = 16990 kJ/m3Make a clear sketch the geometry of this engine using the data and determine thefollowing:i. Indicated power developed by the engine in watt.ii. Air Standard Efficiencyiii. Indicated thermal efficiency of the engine.
- Determine the blade length for a wind turbine that supplies an electrical power output of 1.95 MW and given the following parameters: Wind speed = 51 km/hr The gear, generator and electric efficiencies are 93%, 95% and 91% respectively. The power coefficient of the wind turbine is the maximum possible as given by the Lanchester-Betz limit. Assume the atmospheric air conditions are 1.01325 bar and 27 °CChapter 7, Problem 63, there is an 'h' value that is solved when expressing half the width of the Rankine Oval that I am not quite understanding the process by which the value is solved for. Could you break down the process by which h=0.02423 m? It's been a while since I was last in school, so the mathematical method by which 'h' was solved is a little unclear to me.At a particular hydroelectric power station water flows at a maximum rate of 155 cubic meters per second, falling a distance of 444 meters. The power station's maximum power output is 450 MW. Estimate the efficiency of the power station (the maximum power output as a percentage of the total energy released by the water falling 444 meters at maximum flow). Recall that 1 cubic meter of water is 1,000 kilograms and 1 kilogram of water falling 1 meter releases 10 Joules of energy. Enter your answer as a percentage and round your answer to the nearest 1%. For example if you compute as your answer 0.122 you should enter 12 (for 12%).
- Problem 4Given: The cylindrical piling for an offshore platform is expected to encounter currents of 160 cm/s and waves of a 12 s period and 3 m height.Required: If a 1:60 scale model is tested in the wave tank, what will be the current speedA student team is to design a human-powered submarine for a design competition. The overall length of the prototype submarine is 95 (m), and its student designers hope that it can travel fully submerged through water at 0.440 m/s. The water is freshwater (a lake) at T = 15°C. The design team builds a one-fifth scale model to test in their university’s wind tunnel. A shield surrounds the drag balance strut so that the aerodynamic drag of the strut itself does not influence the measured drag. The air in the wind tunnel is at 25°C and at one standard atmosphere pressure. At what air speed do they need to run the wind tunnel in order to achievesimilarity?Completely solve and box the final answers. Write legibly 9. A blower with the inlet open to the atmosphere delivers 250 cubic meters per minute of air at a pressure of 2.50 cm of water gage through a duct 25 cm in diameter, the manometer being attached to the discharge duct at the blower. Air temperature is 25 degrees C and the barometer pressure reads 1.025 bar. Calculate the required motor rating in KW if the blower efficiency is 92.5%
- Refer to the Worksheet shown, set up to calculate the displacement of a spring. Hooke's law states that the force (F, in newtons) applied to a spring is equal to the stiffness of the spring (k, in newtons per meter) times the displacement {x, in meters): F= kx. ;Chapter 10, Problem 161CA, Refer to the Worksheet shown, set up to calculate the displacement of a spring. Hooke's law states Cell A3 contains a data validation list of springs. The stiffness (cell 83) and maximum displacement (cell C3) values are found using a VLOOKUP function linked to the table shown at the right side of the worksheet. These data are then used to determine the displacement of the spring at various mass values. A warning is issued if the displacement determined is greater than the maximum displacement for the spring. Use this information to determine the answers to the following questions. Write the expression, in Excel notation, that you would type into cell 86 to determine the displacement of the spring.…A small model of a water pump has the ff. performance characteristics: D1 = 9in; N1 = 1760 RPM; Q1 = 562.5 GPM; BP1 = 15 hp If a larger model geometrically similar to the small pump is to be used to deliver kerosene (S.G. = 0.80) at 1200 GPM at speed of 1500 RPM, what is the required impeller diameter in inches for the larger pump?A small model of a water pump has the ff. performance characteristics: D1 = 9in; N1 = 1760 RPM; Q1 = 562.5 GPM; BP1 = 15 hp If a larger model geometrically similar to the small pump is to be used to deliver kerosene (S.G. = 0.80) at 1200 GPM at speed of 1500 RPM, what is the required impeller diameter in inches for the larger pump?Continuing the previous question, what is the required brake horsepower for the larger model?