Steam is contained in a 4-liter volume at a pressure of 1.5 MPa
and a temperature...
Steam is contained in a 4-liter volume at a pressure of 1.5 MPa
and a temperature of 200°C. If the pressure is held constant by
expanding the volume while 40 kJ of heat is added, find the final
temperature. use enthalpy.
0.5 kg of a gas at temperature t1=20?C and pressure
p1=0.1 MPa was contained in a cylinder with a piston.
The gas was compressed (polytropic process) and a ratio of heat
exchanged during the process to the work of compression was ¼. Find
the final temperature and pressure of the gas if 15 KJ of heat was
transferred to the surroundings. Specific heats at constant volume
and pressure were 654.67 J/Kg/K and 897.64 J/kg/K,
respectively.
A 0.905 mol sample of Ar gas is confined in a 22.6 liter container at 31.6 °C.
If the volume of the gas sample is increased to 45.2 L holding the temperature constant, the average force per molecule-wall collision will-
1) increase.
2) not enough information to answer the question.
3) remain the same.
4) decrease.
The temperature and pressure of the steam at the inlet of a high pressure turbine is 500 ° C, respectively. It is 12 MPa and 300 ° C and 3MPa at its outlet. If the mass flow of steam is 400 kg / h, how much is the isentropic efficiency of the turbine?
A cylindrical storage tank contains liquefied propane under a
pressure of 1.5 MPa (gage pressure P=1.5 MPa) and is subjected to a
torque T=5 kN-m. Knowing that the tank has an inner diameter of 320
mm and a wall thickness of 3 mm, find the principal stresses and
determine the maximum shear stress.
A cylindrical storage tank contains liquefied propane under a
pressure of 1.5 MPa (gage pressure P=1.5 MPa) and is subjected to a
torque T=5 kN-m. Knowing that the tank has an inner diameter of 320
mm and a wall thickness of 3 mm, find the principal stresses and
determine the maximum shear stress.
In an intermediate superheated steam cycle, water vapor is 4 MPa
pressure, 440 oC high, isentropic and 0.80 high
After entering the pressure turbine, it expands to 0.4 MPa and the
intermediate superheater is again up to 440 oC.
it is heated and enters the low pressure turbine, whose isentropic
efficiency is also 0.80. 40 oC from condenser
The fluid that works as a saturated liquid at temperature is
pressed into the boiler with a pump with an isentropic efficiency...
The inlet pressure of a steam generator is to be held constant
at 5.00 MPa. During the test, the inlet pressure
was measured 120 times. The resolution of the
digital pressure gauge used was 0.001 MPa. The number of results,
m, is the number of readings falling in an interval of ±0.04 MPa
centered about the listed pressure.
Pressure, p, in MPa
Number of Results, m
4.960
4
4.970
6
4.980
6
4.990
35
5.000
45
5.010
14
5.020
5...
Steam at 275ºC and 15.0 bar is contained in a rigid tank with
the volume of 10.0 m3 . In a constantvolume cooling process, the
pressure inside the tank drops to 1.8 bar and some of the steam
condenses. Calculate 1) the temperature of the tank contents after
the process, 2) the amount of steam condensed during the process
(in kg), and 3) the amount of heat removed from the tank during the
process.
Steam at 275ºC and 15.0 bar is contained in a rigid tank with
the volume of 10.0 m^3 . In a constant volume cooling process, the
pressure inside the tank drops to 1.8 bar and some of the steam
condenses. Calculate 1) the temperature of the tank contents after
the process, 2) the amount of steam condensed during the process
(in kg), and 3) the amount of heat removed from the tank during the
process.
Steam flows steadily through an adiabatic turbine. The inlet
conditions of the steam are 4
MPa, 500°C and 80 m/s, and the exit conditions are 30 kPa, 92%
quality and 50 m/s. The
mass flowrate of the steam is 12 kg/s. Investigate the effect of
the turbine exit pressure on
the power output of the turbine. Let the exit pressure vary from 10
to 200 kPa. Plot (1) T2
vs P2 and 2) Plot the power output (W_dot_T in MW)...