Question

Problem 5(25 points) A rigid tank initially contains a partition that separates water at two different states. One side of the partition initially contains 4.5 lbm of steam at 150 psia and 600°F. The other side of the partition contains 7 lbm of saturated liquid 25 percent. The pressure at the final state is 50 psia. -vapor mixture at 300°F with a vapor mass fraction of partition is removed, and mixing occurs until equilibrium is established. The a) b) Determine the temperature and quality (if applicable) of the water at the final state. (15 points) Determine the amount of heat lost from the tank during this process. (10 points)

Answer 1

Answer 2

Two tanks (Tank A and Tank B) are separated by a partition. Initially Tank A contains 2 kg of steam at 1MPa and 300◦C while Tank B contains 3 kg of saturated liquid-vapor mixture at 150◦C with a vapor mass fraction of 50 percent. The partition is now removed and the two sides are allowed to mix until mechanical and thermal equilibrium are established.