Question
In: Mechanical Engineering
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and...
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and 300 K. A hole develops in the wall, and air from the surroundings at 1 bar, 300 K flows in until the pressure in the tank reaches 1 bar. Heat transfer between the contents of the tank and the surroundings is negligible. Determine the final temperature in the tank, in K. What is the entropy generation of the process? (Please treat the air as ideal gas with cp=1.001 kJ/kg?K and cv=0.714 kJ/kg?K)
Solutions
samet mamat answered 2 years agoRelated Solutions
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and...
A rigid tank of volume 0.63 m3 initially has some air inside at
0.5 bar and 300 K. A hole develops in the wall, and air from the
surroundings at 1 bar, 300 K flows in until the pressure in the
tank reaches 1 bar. Heat transfer between the contents of the tank
and the surroundings is negligible. Determine the final temperature
in the tank, in K. What is the entropy generation of the
process?
(Please treat the air as...
A rigid tank of volume 0.63 m3 initially has some air inside at 0.5 bar and...
A rigid tank of volume 0.63 m3 initially has some air inside at
0.5 bar and 300 K. A hole develops in the wall, and air from the
surroundings at 1 bar, 300 K flows in until the pressure in the
tank reaches 1 bar. Heat transfer between the contents of the tank
and the surroundings is negligible. The final temperature is 350 K.
Use the transient state entropy balcance to find the entropy
generation of the process
An insulated rigid tank having a 0.2 m3 volume initially contains air at 400 kPa and...
An insulated rigid tank having a 0.2 m3 volume initially
contains air at 400 kPa and 313 K. The amount of paddle-wheel work
done on the system is 200 kJ. Calculate the nearest value of
entropy change
a. 0.66 kJ/K
b. 0.88 kJ/K
c. None
d. 0.44 kJ/K
e. 0.33 kJ/K
An insulated, rigid tank whose volume is 0.5 m3 is connected by a valve to a...
An insulated, rigid tank whose volume is 0.5 m3 is
connected by a valve to a large vessel holding steam at 40 bar,
480°C. The tank is initially evacuated. The valve is opened only as
long as required to fill the tank with steam to a pressure of 20
bar.
Determine:
(a) the final temperature of the steam in the tank, in °C, the
final mass of the steam in the tank, in kg, and
(b) the amount of entropy...
A rigid tank of volume 0.75 m3 is initially evacuated. A hole develops in the wall,...
A rigid tank of volume 0.75 m3 is initially evacuated. A hole
develops in the wall, and air from the surroundings at 1 bar, 30°C
flows in until the pressure in the tank reaches 1 bar. Heat
transfer between the contents of the tank and the surroundings is
negligible. Determine the final temperature in the tank, in °C.
A rigid tank of volume 0.3 m3 contains water initially at its critical point. The water...
A rigid tank of volume 0.3 m3 contains water
initially at its critical point. The water is now cooled to
150°C
a) What mass of water is in the tank?
b) Has the average specific volume of this water changed during
the cooling process?
c) Find the mass of liquid water and the mass of water vapor in
the tankat the end of the process.
d) Find the volume of liquid water and the volume of water vapor
in the...
Nitrogen gas is contained in a rigid 1-m3 tank, initially at 5 bar, 300 K. Heat...
Nitrogen gas is contained in a rigid 1-m3 tank, initially at 5
bar, 300 K. Heat transfer to the contents of the tank occurs until
the temperature has increased to 400 K. During the process, a
pressure-relief valve allows nitrogen to escape, maintaining
constant pressure in the tank. Neglecting kinetic and potential
energy effects, and using the ideal gas model with constant
specific heats evaluated at 350 K, determine (a) the mass of
nitrogen that escapes, in kg, and (b)...
Problem 4.084 SI A rigid copper tank, initially containing 1.5 m3 of air at 295 K,...
Problem 4.084 SI A rigid copper tank, initially containing 1.5
m3 of air at 295 K, 4 bar, is connected by a valve to a large
supply line carrying air at 295 K, 15 bar. The valve is opened only
as long as required to fill the tank with air to a pressure of 15
bar. Finally, the air in the tank is at 320 K. The copper tank,
which has a mass of 20 kg, is at the same...
A rigid tank contains hydrogen and has a volume of 4.1 ft3. It is initially at...
A rigid tank contains hydrogen and has a volume of 4.1
ft3. It is initially at 87°F and 1,072 psia. Hydrogen
then leaks from the tank until it is 76°F and 158 psia. How much
heat transfer occurred into the tank, in Btu. Answer negative if
heat left the tank.
please show all work A 0.5-m3 rigid tank contains refrigerant-134a initially at 180 kPa and 40...
please show all work
A 0.5-m3 rigid tank contains refrigerant-134a
initially at 180 kPa and 40 percent quality. Heat is now
transferred to the refrigerant until the pressure reaches 700
kPa.
Determine the amount of heat transferred. (Round the final
answer to the nearest whole number.) The amount of heat transferred
is _____ kJ.
Also, show the process on a P-v diagram with
respect to saturation lines.
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