Problem 2.3:
Use the steam tables to do the following:
a) A drum 3.5 m3 in volume contains steam at 1 bar, 210 °C. Determine the mass of steam in the drum.
b) Wet steam with quality 15% vapor is to be stored under pressure at 20 bar in a thermally insulated vessel. What is the temperature?
c) If the total mass to be stored is 525 kg, what is the required volume of the vessel?
Problem 2.4: A closed tank contains a vapor-liquid mixture of steam at 45 bar with liquid content 25% by mass.
a) The pressure is changed to 80 bar. What is the temperature?
b) The pressure is changed until the contents become 100% saturated vapor. What is that pressure?
c) With pressure held constant at 45 bar, steam is added to or removed from the tank, as needed, until the contents are 25% liquid by volume. Calculate the mass of steam that must be added or removed and report it as a percentage of the total mass originally in the tank.