Find the phase of the substance under the given conditions
and the requested data:
R-134a at 1,000 kPa and 0.03 m/kg. Construct the phase in
the diagram. Find the temperature and the quality if
defined.
R-134a at 40C and 0.01 m/kg. Construct the phase in
the diagram. Find the pressure and the quality if
defined.
R-134a at 40C and 50% quality. Find the phase, the
pressure and the specific volume.
UNGRADED Water in a piston/cylinder configuration boils at
110C.
There is standard atmospheric pressure above the piston and the
piston has a mass of
30 kg.
What is the diameter of the piston?
A piston/cylinder combination contains R-134a at and
1318.1 kPa. Find the exact phase it is in, the temperature, and
specific volume.
The piston is then pulled up in an isothermal process until
the distance from the bottom of the cylinder is doubled.
Construct the final phase in the diagram. Label the lines
with their values. Find the final temperature, specific volume,
and quality if defined. UNGRADED: Also find the final pressure.
Repeat if instead the piston is pushed into the cylinder
until it is twice as close to the bottom of it as it was. The
final pressure is now required, but the final quality is UNGRADED.
A steel tank with a volume of 5 m contains saturated
R-134a at
10C.
The liquid is then boiled away and disappears at
50C.
What is the final pressure? How much liquid was boiled
away?