Refrigerant R-134a at 200 kPa and 10 ⁰C enters an adiabatic diffuser steadily with a velocity of 600 m/s and leaves at 10 bar and 150 ⁰C. Determine: a) The exit velocity b) The inlet to exit area ratio c) The inlet exit density ratio

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A steam pipe carrying 400C, 200kPa steam enters a well-insulated mixing chamber where it is mixed with a 30C, 200kPa stream of cold water with twice the mass flow. a) what is the enthalpy of the exit stream? b) what is the quality of the exit stream?

An internally reversible process occurs in a system during which Q = – 12 KJ, AU = – 79 KJ and Ah = - 111 KJ A. Find the work if the system is non- flow. B. Determine the work and the change of flow energy if the system is steady state, steady flow system with AEK 4 KJ. %3D

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A steady stream of steam passes through an adiabatic turbine. It enters at 10 MPa, 450 °C and 80 m/s and at the exit it is 500 KPa, 40% quality and 30 m/s. The mass flow of the steam is 12 kg/s. a) With the power that comes out of the system, 252 100 W bulbs can be lit. Calculate the efficiency of the system. b) What is the area of ​​the duct at the entrance? c) What is the volumetric flow at the outlet? d) What is the temperature of the steam at the outlet?

3. An adiabatic compressor takes argon from 100 kPa, 300 K to 2000 kPa. The compressor efficiency is 80%. (a) Find the outlet temperature (K) and the work (kJ/kg) (b) Find the entropy generation (kJ/kg-K)

A certain ideal gas has a constant R = 38.9 ft-lff/lbm-R with k = 1.4. a) If 3 lbm of this gas undergoes a reversible nonflow constant volume process from 120 psia,740 oF to 140 oF find P2, ∆U, ∆H, Q, Work. b) If the process in “a” had been steady flow find work and ∆S.