Consider a 150 kW, 30 m diameter horizontal axis, fixed speed wind turbine operating in a wind speed of 9 m/s. Two blades mounted on a cast iron hub drive a generator through a gearbox with a shaft speed ratio of 1: 50. If the speed of the shaft rotates at a rate of 45 rpm, calculate the power coefficient, the rotor tip speed and the torque on the generator shaft after c

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.