A portion of the steam passing through a steam turbine is sometimes removed and used in a feedwater heater. The turbine losses 860 kW of heat to the surroundings with steam entering at 12.5 MPa and 550 °C at a rate of 20 kg s-1. Steam is bled from the turbine at 1000 kPa and 200 °C at a mass flow rate of 1 kg s-1. The remaining steam exits at 100 kPa and 100 °C. What is the power output from the turbine

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Fluids at rest possess no flow energy. a)- true b)- false