Carbon monoxide (CO) contained in a piston–cylinder arrangement, initially at 3.5 bar and 462 K, undergoes an expansion to a final temperature of 232 K, during which the pressure–volume relationship is pV1.5 = constant. Assuming the ideal gas model for the CO, determine the work in kJ/kg.

Three-tenths kmol of carbon monoxide (CO) in a piston- cylinder assembly undergoes a process from p1 = 150 kPa, T1 = 300 K to p2 = 500 kPa, T2 = 470 K. For the process, W = -300 kJ. Employing the ideal gas model, determine: (a) the heat transfer, in kJ. (b) the change in entropy, in kJ/K.

Five kilograms of a two-phase liquid-vapor mixture of water initially at 300\deg C and x1 = 0.5 is heated from the initial state to a saturated vapor state while the volume remains constant. The process is brought about by heat transfer from a thermal reservoir at 380\deg C. The temperature of the water at the location where the heat transfer occurs is 380\deg C.Let To = 300 K, Po = 1 bar, and ignore the effects of motion and gravity.

A 300-lb iron casting. initially at 600°F, is quenched in a tank filled with 2121 lb of oil, initially at 80°F. The iron casting and oil can be modeled as incompressible with specific heats 0.10 Btu/lb - °R. and 0.45 Btu/lb - °R, respectively. (a) For the iron casting and oil as the system.determine the final equilibrium temperature, in °F. Ignore heat transfer between the system and its surroundings. °F (b) For the iron casting and oil as the system,determine the amount of entropy produced within the tank, in Btu/°R. Ignore heat transfer between the system and its surroundings. Btu/°R

For each case, determine the specified property value and locate the state sketches of the p–υ and T–υ diagrams. For Refrigerant 134a at T = 160°F, h = 127.7 Btu/lb. Find υ, in ft3/lb. For Refrigerant 134a at T = 90°F, u = 72.71 Btu/lb. Find h, in Btu/lb. For ammonia at T = 160°F, p = 60 lbf/in.2 Find u, in Btu/lb. For ammonia at T = 0°F, p = 35 lbf/in.2 Find u, in Btu/lb. For Refrigerant 22 at p = 350 lbf/in.2, T = 350°F. Find u, in Btu/lb.