Tank Volume

A tank whose volume is unknown is divided into two parts by a partition. One side of the tank contains 0.01 m^3 of refrigerant-134a that is a saturated liquid at 0.8 MPa, while the other side is evacuated. The partition is now removed, and the refrigerant fills the entire tank. If the final state of the refrigerant is 25 degrees Celcius and 200 kPa, determine the volume of the tank. See Figure 2-127 attached. Please show steps to help my understanding. Thanks.

2 THERMODYNAMICS PROBLEMS!!

I missed class, and was unable to obtain the material. I have no clue on these practice excersizes. I dont know how to start , setup or solve these problems. I NEED SOMEONE TO THOROUGHLY EXPLAIN STEPS AND PROCEDURES ON SOLVING THESE EXCERSIZES AS MUCH AS POSSIBLE !!!!!!!! I think some of these excersices you will setup stoichiometry tables, and there is the in out thing going on. I know its not complicated, its just i missed the material.

Pressure Cooker

Steam is leaving a pressure cooker whose operating pressure is 30 psia. It is observed that the amount of liquid in the cooker has decreased by 0.4 gal in 45 minutes after the steady operating conditions are established, and the cross-sectional area of the exit opening is 0.15 in^2. Determine (a) the mass flow rate of the steam and the exit velocity, (b) the total and flow energies of the steam per unit mass, and (c) the rate at which energy is leaving the cooker by steam.

Piston-Cylinder Device

A piston-cylinder device contains 5 kg of refrigerant-134a at 800 kPa and 60 degrees Celsius. The refrigerant is now cooled at constant pressure until it exists as liquid at 20 degrees Celsius. Determine the amount of heat loss and show the process on a T-v diagram with respect to saturation lines. Please show steps. Answer:1089 kJ

Tank Work

A 10-ft^3 tank contains oxygen initially at 14.7 psia and 80 degrees F. A paddle wheel within the tank is rotated until the pressure inside rises to 20 psia. During the process 20 Btu of heat is lost to the surroundings. Determine the paddle-wheel work done. Neglect the energy stored in the paddle wheel.