A straight horizontal air duct of 0.2 m diameter and 2 m long, with a velocity of 5 m/s with a friction factor of 0.02 draws in air form the atmosphere (100 kPa, a) using a fan. The air is delivered into a large enclosure at 0.02 kPa, g. The fan is 80 % efficient. What is the power head required to run the fan (m)?

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.