Question

A rigid tank contains steam at 120 bar, 350C. The tank is cooled until its contents become saturated vapor. Determine the temperature and pressure at the final state

Please use interpolation to do this problem

Answer #1

A sealed rigid tank .4m^3 filled with steam at 6.5 bar and is at
300 o C. It is cooled until contents become saturated vapor. Find
mass of steam, final T/P of tank, and how much heat must be removed
if cooling is reversible??

Heat flow between connected tanks.
Two identical tanks, each with volume 0.250m3,contain steam.
Tank A contains 2.5 kg ofsteam at 400 C. Tank B contains 2.5 kg of
steam at10 bar.
a. Determine the pressure in tank A. If the state is a
vapor/liquid mixture, determine the mass fraction of the vapor.
b. Determine the temperature in tank B. If the state is a
vapor/liquid mixture, determine the mass fraction of the vapor.
c. The two tanks are linked with...

Water vapor is cooled in a closed, rigid tank from T1 = 360°C
and p1 = 100 bar to a final temperature of T2 = 320°C. Determine
the final specific volume, v2, in m3/kg, and the final pressure,
p2, in bar.

Water vapor is cooled in a closed, rigid tank from
T1 = 400°C and p1 = 100 bar
to a final temperature of T2 = 320°C.
Determine the final specific volume, v2, in
m3/kg, and the final pressure, p2,
in bar.

A closed, rigid tank is filled with water. Initially, the tank
holds 1.0 lb of saturated vapor and 7.0 lb of saturated liquid,
each at 212°F. The water is heated until the tank contains only
saturated vapor. Kinetic and potential energy effects can be
ignored. Determine the volume of the tank, in ft3, the temperature
at the final state, in °F, and the heat transfer, in Btu.

A rigid container with a volume of 2 m3 initially contains 0.05
m3 of liquid and 1.95 m3 of vapor at 125 kPa. Heat is transferred
from a 3000C source to the contents of the vessel until the
pressure in the container reaches 4 MPa. The contents of the vessel
are now cooled in a surrounding temperature of 250C until the
contents reach its initial state.
Determine total entropy generated (Sgen) during the cycle.

A rigid tank has a volume of 0.01 m3. It
initially contains saturated water at a temperature of 200
oC and a quality of 0.4. The top of the
tank contains a pressure regulating valve which maintains the vapor
at constant pressure. This system undergoes a process where it is
heated until all the liquid vaporizes. How much heat in (kJ) is
required? You may assume there is no pressure drop in the exit
line.

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 rigid tank contains 20lbm of air at 80ºF and 35
psig. Heat is added until the pressure doubles to 70 psig.
Rair = 0.3704 psia-ft3/lbm-R
Draw the P-v and T-v diagrams for the problem.
What is the volume of the tank ft3?
What is final temperature of the air in ºF?
How much heat is transferred in the process in Btu?

A 1.2 m3 rigid tank initially contains steam at 8 MPa and 400
◦C. The steam slowly comes out through a hole at the bottom until
the pressure drops to P0 while
keeps the temperature constant. Making the pertinent considerations
determines:
a) the heat transferred, in kJ when P0 = 2 MPa.
b) graph the heat transfer, in kJ, versus P0 from 0.5 to 8.0
MPa

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