A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston- cylinder device at 100 kPa. Initiall
Posted: Sat May 21, 2022 10:34 am
A mass of 5 kg of saturated liquid-vapor mixture of water is
contained in a piston-
cylinder device at 100 kPa. Initially, 2 kg of the water is in the
liquid phase and the
rest is in the vapor phase. Heat is now transferred to the water,
and the piston,
which is resting on a set of stops, starts moving when the pressure
inside reaches
200 kPa. Heat transfer continues until the total volume increases
by 30 percent.
Determine
a) the initial and final temperatures, [10 marks]
b) the mass of liquid water when the piston first starts moving,
and
[5 marks]
c) the work done during this process. [5 marks]
contained in a piston-
cylinder device at 100 kPa. Initially, 2 kg of the water is in the
liquid phase and the
rest is in the vapor phase. Heat is now transferred to the water,
and the piston,
which is resting on a set of stops, starts moving when the pressure
inside reaches
200 kPa. Heat transfer continues until the total volume increases
by 30 percent.
Determine
a) the initial and final temperatures, [10 marks]
b) the mass of liquid water when the piston first starts moving,
and
[5 marks]
c) the work done during this process. [5 marks]