1. Each of the following exercises requires evaluating the quality of a two-phase liquid-vapor mixture:
(a) The quality of a two-phase liquid-vapor mixture of H2O at 40°C with a specific volume of 10 m3/kg is
(i) 0, (ii) 0.486 (iii) 0.512, (iv) 1.
(b) The quality of a two-phase liquid-vapor mixture of propane at 20 bar with a specific internal energy of 300 kJ/kg is (i) 0.166, (ii) 0.214, (iii) 0.575, (iv) 0.627.
(c) The quality of a two-phase liquid-vapor mixture of Refrigerant 134a at 90 lbf/in.2 with a specific enthalpy of 90 Btu/lb is (i) 0.387, (ii) 0.718, (iii) 0.806, (iv) 0.854.
(d) The quality of a two-phase liquid-vapor mixture of ammonia at 220°F with a specific volume of 11 ft3/lb is (i) 0, (ii) 0.251, (iii) 0.537, (iv) 0.749.
2. Determine the quality of a two-phase liquid-vapor mixture of
(a) H2O at 10 lbf/in.2 with a specific volume of 15 ft3/lb.
(b) Refrigerant 134a at 60°F with a specific internal energy of 50.5 Btu/lb.
(c) ammonia at 80 lbf/in.2 with a specific enthalpy of 350 Btu/lb.
(d) propane at 220°F with a specific volume of 1 ft3/lb.