An adiabatic turbine (but not isentropic) has steam enter at a pressure of 200 psia, a temperature of 500 f and a velocity of 40 ft/s. the steam leaves at 20 psia and a temperature of 300 f an da velocity of 20 ft/s. the turbine is providing 100 horespower of work. answer the questions below but be careful to answer the correct question.

1. what is the actual mass flow in lbm/s through this turbine to three significant digits?
2. what is the maximum physically possible the turbine could supple in horsepower (hp) to three significant digits?

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.

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?