2. A closed rigid tank filled with water is initially at 300 psia with a quality of 80% and a
volume of 10 ft³ is cooled until the pressure is 60 psia. Using the attached Steam
Tables, determine: (a) the initial specific volume of the water in ft³/lb, (b) the initial
specific internal energy in Btu/lb, (c) the final quality of the water, (d) the final specific
internal energy in Btu/lb, (e) the mass of the water in lb, and (f) the heat transfer in
Btu. (10 points)
Note:
$E_{in} - E_{out} = \Delta E_{system}$
$V = V_f + x \cdot (V_g - V_f)$
$Q - W = \Delta E_{system} = \Delta U + \Delta KE + \Delta PE$
$u = u_f + x \cdot (u_g - u_f)$