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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Q: 1. For a Polytropic Reversible Process PV =constant show that: Q=(Y-n/Y -1 )x work done 2. The PMM1 refers to?

a. Find an appropriate expression for the change in entropy in the following two cases: 1) S=S(TV) 2) S=S(TP) Where: S is entropy. T is temperature. V is volume, P is pressure b. Prove the following two thermodynamic property relationships ac Where: T. P. V are temperature, pressure and volume, respectively. C. and C, are specific heats at constant volume and constant pressure, respectively.