Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in². At the exit, the pressure is 400 lb/in² and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in lb/s, and the exit temperature, in °F.

Refrigerant 134a enters an insulated diffuser as a saturated vapor at 24°C with a velocity of 245 m/s. The inlet area is 9 cm². At the exit, the pressure is 16 bar, and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. a. Determine the mass flow rate, in kg/s. b. Determine the exit temperature, in °C. x₁ 1(sat. vapor) T₁=24°C V₁=245 m/s A₁-9 cm² Diffuser P2 = 16 bar V₂=0

1. thermodynamics

If steam flows through a nozzle at steady-state, entering the nozzle with a pressure of 0.5 MPa and a temperature of 673 K, where H = 3272 kJ/kg, and exiting at 0.1 MPa and 623 K, where H = 3176 kJ/kg, what is its exiting velocity (in m/s)? Assume that the heat loss is 10% of the change in kinetic energy.