A 2 3 rigid tank contains water. Initially, 10 of this water is in saturated liquid phase. The remaining volume of the tank is filled with saturated vapor. The pressure inside the tank is 2 . Based on this
information:
a) What is the total mass of water inside the tank at that moment? (20p)
b) What is the quality of this mixture? (20p)
c) What is the average specific volume of this mixture? (20p)
d) The tank is now heated until the pressure inside is 8 . Find the final temperature of
water and the total heat input required for this process. (40p)

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

The higher the astm grain size number, the finer the gran is. a)-true b)-false