Question

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

Answer #1

A liquid mixture of A and B is in equilibrium with a vapor
mixture of the same A and B at 300K and 2.14 bar. At 300K, the
vapor pressure of A is 6.21 bar, and that of B is 2.77 bar. What is
the mole fraction of A in the liquid? Both the liquid and vapor
phases are ideal

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

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

A superheated vapor feed of 60 mol% more volatile component at
350 oC is introduced on the feed plate maintained at the
temperature of 50 oC. Feed flow rate is 1000 kmol/h and the average
heat capacities are: CPL = 50 cal/(mol –oC) and CPV = 25 cal/(mol
–oC). The latent heat of vaporization is λ = 5000 cal/(mol –
oC).
a. What is the slope of the feed line?
b. If a feed to a column is a two-phase...

15 OC, where the pure vapor pressures are 12.5 mmHg
for water and 32.1 mmHg for ethanol. According to Raoult’s Law, the
pressure of a component in a solution is equal to its pure vapor
pressure times its mole fraction, that is PA = ()
(XA). Use Raoult’s law to determine the vapor pressure
of each component in the solution. Then, add them to find the total
vapor pressure. Show all equations and conversion factors

A liquid mixture of two unknown liquids, A and B, has a total
vapor pressure of 0.04 bar. The vapor pressure of pure A under the
same conditions is 0.03 bar, and the vapor pressure of pure B under
the same conditions is 0.05 bar. Using Raoult’s Law, what are the
mole fractions of A and B in solution?

Water at 10 oC flows at a mass flow rate of 15 kg/s through a
nozzle that converges from a 10 cm diameter to 2 cm diameter. If
the outlet pressure is 1 bar, calculate the inlet pressure (Answer:
12.4 bar).

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...

A cylinder-piston device contains a mass of 2.4 kg of
liquid-vapor mixture water with 70% titer at 50 bar. The system
goes through a process of cooling to constant pressure until the
obtaining compressed liquid with 14 ºC of subcooling. Evaluate:
(i) The initial and final temperatures of the process.
(ii) The specific enthalpy at the beginning of the process.
(iii) The change in total volume during the process.
(iv) The amount of heat removed from the system during the...

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.

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