Thermodynamics:
1.1kg/s of steam at 60 MPa and 800°C is to undergo a Joule-Thomson expansion to 1 MPa. The steam coming out of the Joule-Thomson expansion process is fed to the turbine to produce shaft work. Steam exits the turbine at 0.1 MPa and 155°C. Assume that the turbine is steady-state and adiabatic.
a) Does this process violate the second law of thermodynamics?
2.
0.1 m3/s of superheated steam at 1000 kPa and 250oC is travelling through a 10 cm diameter pipe. It expands through a nozzle to 200 kPa. Assuming the process is reversible and adiabatic, determine:
a)The downstream temperature of the steam (Hint: use SB)
b) The downstream quality of the steam
c) The downstream velocity of the steam (Hint: use EB)
Thermodynamics: 1.1kg/s of steam at 60 MPa and 800°C is to undergo a Joule-Thomson expansion to...
In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand until it exits the...
In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand until it exits the...
In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand until it exits the...
In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand until it exits the...
In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand until it exits the...
In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand until it exits the...
Steam enters an adiabatic turbine steadily at 6 MPa, 500oC and 45 m/s and exits at 100 kPa, 100oC, and 75 m/s. The power output from the turbine is 5 MW. Calculate: the mass flow rate of steam through the turbine, the rate of exergy destroyed during this process, and the second law efficiency of the turbine.
Question # 5 (20%) In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand...
Question # 5 (20%) In a small power plant, a steam at a rate of 2 kg/s and 4000 kPa enters a two stages steady-flow steam turbine. During the first stage, the steam expands in the turbine while doing work until the turbine exit pressure is 500 kPa. At that point, 10% of the steam is removed from the turbine for other uses. During the second stage, the remaining portion of steam, the 90% of the steam, continues to expand...
Steam enters an adiabatic turbine steadily at 3 MPa and 450°C at a rate of 8 kg/s and exits at 0.2 MPa and 150*C. If the surrounding air is at 25°C and 100 kPa, determine: a. The specific flow exergy of steam at turbine entrance b. The specific flow exergy of steam at turbine exit c. The rate of flow exergy change in the process.