Question

Find the volume forr a system of saturated liquid-vapor mixture of water at 200 °C that contains 20 kg vapor AND 80 kg liquid

Answer #1

system, a rigid tank, contains mixture of saturated water vapor
and saturated liquid at 90 oC. Total mass is 1.5 kg. quality is
0,34. system is heated untill all liquid is converted into vapor.
how much heat is transferred to the syste, show this process in
P-v-diagram

Initially (state 1) a well-insulated rigid tank contains 20 kg
of a saturated liquid-vapor mixture of water at 100 kPa and half of
the mass is in the liquid phase. An electric resistance heater
placed in the tank is now turned on and kept on until all the
liquid in the tank is vaporized (state 2). Determine (a) the
initial specific volume in m3/kg, (b) the final specific
entropy in kJ/kg.K and (c) change of entropy in kJ/K.

Initially (state 1) a well-insulated rigid tank contains 20 kg
of a saturated liquid-vapor mixture of water at 100 kPa and half of
the mass is in the liquid phase. An electric resistance heater
placed in the tank is now turned on and kept on until all the
liquid in the tank is vaporized (state 2). Determine (a) the
initial specific volume in m3/kg, (b) the final specific
entropy in kJ/kg.K and (c) change of entropy in kJ/K.

A well-insulated rigid tank contains 6 kg of saturated liquid
vapor mixture of water at 150 kPa. Initially, half of the mass is
in liquid phase. An electric resistance heater placed in the tank
is then turned on and kept on until all the liquid is vaporized.
Determine the electrical work (Wel) in MJ

A 0.1-m3 rigid tank contains saturated liquid-vapor mixture of
water, initially at 150 kPa and 52 percent quality. Heat is now
transferred to the tank until the system becomes superheated vapor
and the pressure reaches 300 kPa. Determine (a) the total mass of
the mixture in the tank and (b) the amount of heat transferred.

A well-insulated rigid tank contains 5-kg of a saturated
liquid-vapor mixture of water at 100 kPa. Initially, three-quarters
of the mass is in the liquid phase. An electric heater with a power
rating of 880 W is placed in the tank. Determine how long it will
take to vaporize all the liquid in the tank. Show the process on a
T-v diagram with respect to saturation lines.

Mixture of saturated liquid-vapor water enters a compressor with
mass flow rate of 2 kg/s, velocity of 150 m/s, pressure of 10 kpa
and quality of 0.85. The substance leaves the compressor with the
velocity of 40 m/s at 7 MPa and 450°C. The heat loss from the
compressor is 200 kW. Neglecting the changes in potential energy,
determine the compressor required power.

A mixture of 85% liquid water and 15% water vapor at 200
oC is feed to an adiabatic throttle. The outlet pressure
is 3.0 bar. What is the fraction of vapor in the outlet?

A tank having a volume of 0.85 m^3 initially contains water as a
two-phase liquid vapor mixture at 260 C and a quality of 0.7.
Saturated water vapor at 260 C is slowly withdrawn through a
pressure-regulating valve at the top of the tank as energy is
transferred by heat to maintain the pressure constant in the tank.
This continues until the tank is filled with saturated vapor at 260
C. Determine the amount of heat transfer in kJ. Neglect...

An air-water vapor mixture containing 20% humidity at a dry
thermometer temperature of 40 ° C A tunnel is fed to the dryer by
being heated to 70 ° C. Red pepper samples It is dried in adiabatic
conditions. Leave the dryer system saturated For the mixing
air-water vapor mixture, find the following.
a) 10000 m3 of moist air at 40 ° C (air-water vapor mixture) warmth
Required heat to increase to 70 ° C
b) Air temperature at dryer...

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