4-99 Refrigerant 134a enters the flash chamber operating at steady state shown in Fig. P4.99 at 10 bar, 36°C, with a mass flow rate of 482 kg/h. Saturated liquid and saturated vapor exit as separate streams, each at pressure p. Heat transfer to the surroundings and kinetic and potential energy effects can be ignored. (a) Determine the mass flow rates of the exiting streams, cach in kg/h, if p = 4 bar. (b) Plot the mass flow rates of the exiting streams, each in kg/h, versus p ranging from 1 to 9 bar. 3. Valve Saturated vapor. pressure p Flash chamber P-10 bar T= 36 C it 482 kg/h Saturated liquid. d aanssaud 2.

Water enters a system, operating at steady state, at 102 kPa , 25 ∘C, and 11 m/s at a mass flow rate of 199 kg/s. It leaves the system at 14 m/s , 1 MPa, 25 ∘C. The density (ρ) of water is 1000 kg/m^3. a)Determine the rate of flow work at the inlet (magnitude only) b)Determine the diameter of the pipe at the inlet.

4. Choose the correct statement/s with respect to entropy change during a process a. Entropy increases with increase in pressure at constant temperatureb. Entropy increases with increase in temperature at constant pressurec. Entropy can be kept constant by systematically increase both pressure and temperatured. Entropy can not be changed

Steam enters a turbine operating at steady state at 1.5 MPa and 418.4 °C, with a velocity of 79 m/s. Saturated vapour exits at 0.2 MPa and a velocity of 40 m/s. The elevation of the inlet is 2.8 m higher than the exit. The mass flow rate is 11.7 kg/s and the power developed is 5.5 MW. a) Using the property tables calculate the specific volume of the steam at the inlet m/kg b) Compute the area of the inlet m2 c) Using the property tables calculate the specific enthalpy of the steam entering the turbine kJ/kg