THERMODYNAMICS PROBLEM1. Steam enters a nozzle at 4 MPa and 640 oC with velocityadmin / July 3, 2018
THERMODYNAMICS PROBLEM1. Steam enters a nozzle at 4 MPa and 640 oC with velocity of 20 m/s. This process may be considered reversible and adiabatic. The nozzle exit pressure is 0.1 MPaa) Draw a sketch of this process. Include all known information.
b) What is the entropy change of the steam?
c) What is the exit temperature?
d) What is the exit velocity?2. Propane at 350 oC and 600 cm3/mol is expanded in a turbine. The exhaust pressure is atmospheric. What is the lowest possible exhaust temperature? How much work is obtained? The heat capacity of propane is given by cp/R= 9.011 + 1.213T where T is in Kelvin. You may assume ideal gas behavior and that heat transfer to the surroundings is negligible.3. A vessel contains 1 kg of water as liquid and vapor in equilibrium at 1000 kPa if the vapor occupies 70% of the volume of the vessel determine H and S for the 1 kg of water.4. What is the mole fraction of water vapor in air that is saturated with water at 25 degree C and 101.33 kPa? At 50 degree C and 101.33 kPa?5. A rigid vessel of 0.4 m3 volume is filled with steam at 800 kPa and 350 degree C. How much heat must be transferred from the steam to bring its temperature to 200 degree C ?