Question

The piston-cylinder system is filled with a steam of 2.5m3 at 10
barometric pressure and 450oC. When the condensation is about to
start by cooling at a constant pressure.

(1) steam mass; (2) final temperature; (3) heat transfer;

Answer #1

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.

Think of the piston-cylinder system. Initially, it is filled
with pressure of 8 atmosphere, water of 0.1 m3 and steam of 0.9 m3.
The piston moved freely and heat was transferred to expand,
resulting in a final temperature of 350oC.
(1) Initial temperature (2) Total mass of H2O (3) Final volume (4)
Marked on the P-v lead

Atmospheric pressure is 100 kPa in a system of cylinders and pistons.The mass of the piston is 4 kg and the area of the piston is 4.0 cm2. The following process takes place by external heat transfer. (Gravity acceleration is 10 m / s2).
1. Calculate the pressure inside the cylinder in kPa.
2. The cylinder contains 0.1 kg of water vapor, and the
temperature of the water vapor is 150oC. Find the volume and
internal energy of water vapor...

A piston-cylinder device contains 0.54 kg of steam at 300
degrees C and 3 MPa. Steam is cooled at constant pressure until
one-half of the mass condenses. (A) Find the final temperature (B)
Determine the volume change

A cylinder, with a piston pressing down with a constant
pressure, is filled with 2.00 moles of a gas (n1), and its
volume is 49.0 L (V1). If 0.500 mole of gas leak out, and
the pressure and temperature remain the same, what is the final
volume of the gas inside the cylinder?

Three kilograms (3.0 kg) of saturated steam at 162oC is held in
a closed piston-cylinder apparatus with a weighted piston that
exerts a constant force on the steam. The piston-cylinder apparatus
loses energy to the surroundings such that at a certain point 50%
of the steam has condensed to a saturated liquid inside the
cylinder (NOTE: the vapor and liquid are still saturated at the new
condition).
a. For the process described above, determine the heat exchange
with the surroundings....

A piston cylinder contains 2 lbm of air and operates at a
constant pressure of 400 psia. The initial volume is 1 ft.3 and the
initial temperature is 100°F. The final volume is 4 ft.3 and the
final temperature is 1780°F. Determine the work and its direction
(in or out) and the heat transfer and its direction, in
Btu/lbm.

1.A cylinder, with a piston pressing down with a constant
pressure, is filled with 1.90 moles of a gas (n1 ), and its volume
is 50.0 L (V1 ). If 0.400 mole of gas leak out, and the pressure
and temperature remain the same, what is the final volume of the
gas inside the cylinder?
A sample of gas in a cylinder as in the example in Part A has an
initial volume of 52.0 L , and you have...

A 10 cm -diameter cylinder contains argon gas at 10 atm pressure
and a temperature of 60 ∘C . A piston can slide in and out of the
cylinder. The cylinder's initial length is 19 cm . 2600 J of heat
are transferred to the gas, causing the gas to expand at constant
pressure. 1-What is the final temperature of the cylinder? 2-What
is the final length of the cylinder?

Steam, initially at 700 lbf/in.2, 550°F undergoes a
polytropic process in a piston–cylinder assembly to a final
pressure of 2200 lbf/in.2 Kinetic and potential energy
effects are negligible.
Determine the heat transfer, in Btu per lb of steam, for a
polytropic exponent of 1.4,
(a) using data from the steam tables.
(b) assuming ideal gas behavior.

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