Question

Tank #1 initially at 40 bar and temperature of 200 K is connected to a cylinder of equal volume at 1 bar and 250 K. Gas flows until the pressure is equalized. There is no heat transfer between the tanks. What are the final temperatures of the tanks?

Answer #1

A rigid copper tank, initially containing 1 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 310 K. The copper tank, which has a mass of 20 kg,
is at the same temperature as the...

A tank of 0.1 m3 volume initially containing nitrogen
at 25 C and 1 bar will be filled with compressed nitrogen at a rate
of 20 mol/s. The nitrogen coming from the compressor and into the
tank is at an absolute pressure of 110 bar and a temperature of 80
C. The filling process occurs sufficiently rapidly that there is
negligible heat transfer between the gas and the tank walls, and a
valve is closed to stop the filling process...

steam is contained in a piston and cylinder assemble at a
pressure of 5 bar and temperature of 700 degrees celcius. At this
initial condition, the cylinder is restrained by stops since the
pressure is applied on piston only supprts a pressure of 3 bar in
the cylinder. The initial volume of system is 1m^3 and cooling is
applied to the system until final volume is 0.1m^3. Determine work
and heat transfer.

Calculate the entropy production for the
piston-cylinder power producing cycle you analyzed in,
problem 1.
Problem 1: A piston cylinder device has a
volume of 0.04 m3 and initially contains air at 293 K
and 1 bar. This device is used to perform a cycle in which the gas
is heated at a constant volume until the temperature reaches 1000
K. The air is allowed to expand following an isothermal process
until the volume is 3.5 times the original volume....

A piston–cylinder assembly contains ammonia, initially at a
temperature of -20°C and a quality of 50%. The ammonia is slowly
heated to a final state where the pressure is 6 bar and the
temperature is 100°C. While the ammonia is heated, its pressure
varies linearly with specific volume.
For the ammonia, determine the work and heat transfer, each in
kJ/kg.

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...

1. In an industrial process, a tank containing 200 liters of
water at 372 K at a constant pressure is used as a thermal energy
storage device. The device is used to heat a residential space that
is maintained 293 K. There is a negligible change in the volume of
the water. The water is stirred during this process to maintain a
uniformly distributed temperature. During the process, the
convective heat transfer coefficient between the water and the
space is...

Two tanks (A & B) are filled with carbon dioxide and are
initially cut-off from another by means of a closed valve. Tank A
has a volume of 1.0 m3, pressure of 90 kPa and a
temperature of 350 K. Similarly, tank B has a volume of 0.5
m3, pressure of 200 kPa and a temperature of 460 K.
After opening the valve, both tanks reach a uniform temperature
of 390 K. What is the final pressure in both tanks?

A nonconducting tank of negligible heat capacity and 1
m3
volume is connected to
pipeline containing steam at 5 bar and 370℃, filled with steam
to a pressure of 5 bar,
and disconnected from the pipeline. If the tank initially
contains steam at 1 bar and 150℃, how much steam is in the
tank at the end of the filling process, and what is its
temperature?
Note: The answer is 1.56kg and 425c but I can’t figure out how
to...

A 0.2 m3 piston-cylinder initially contains 400 K air. A heavy
frictionless piston maintains a pressure of 500 kPa abs. Then, a
weakness in the cylinder wall blows out and creates a hole. Air
escapes through the hole until the piston drops far enough to cover
the hole. At that point, the volume is half the initial volume.
During this process, 75 kJ of heat is transferred to the 100 kPa,
300 K surroundings. Using Cp = 1.005 kJ/kg-K and...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 12 minutes ago

asked 14 minutes ago

asked 28 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago