A pump supplies 40 L/min of water through 30 m of 2.54 cm galvanized pipe. The pipe has one fully open globe valve and two 90o standard elbows. Water is delivered at 140 kPa to a tank located 15 m above the pump intake. What is the pump motor power requirement if the combined pump and motor efficiency is 0.70? Assume the temperature of the water is at 20oC with kinematic viscosity and absolute viscosity at 1.006×10-6 m2/s and 0.9934×10-3 Ns/m2, respectively

Consider a power plant with water as the working fluid that operates on an ideal rankine cycle. it has a net power output of 45mw. superheated steam enters the turbine at 7mpa and 500°c (h=3411.4 kj/kg; s=6.8 kj/kg k) and is cooled in the condenser at a pressure of 10 kpa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. (a) show the cycle on a t-s diagram (a right schematic is fine - you do not need to calculate the temperatures at each point); (b)-determine the work done by the turbine and the pump in kj/kg; (c)-the mass flow rate of water used by the power plant; (d)-the thermal efficiency of the cycle; (e)-the temperature rise of the cooling water. assume the cooling water is incompressible with cp 4.18 kj/kg°c.