Steam enters an adiabatic turbine at 400◦C, 2 MPa pressure. The turbine has an isentropic efficiency of 0.9. The exit pressure i
s set so that the actual work output from the turbine is 700 kJ/kg. Determine the required exit pressure and the actual exit temperature and quality, if saturated.
1 answer:
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The pressure difference across the sensor housing will be "95 kPa".
According to the question, the values are:
Altitude,
- 9874
Speed,
- 1567 kph
Pressure,
- 122 kPa
The temperature will be:
→
→
→
now,
→
→
hence,
→ The pressure differential will be:
=
=
Thus the above solution is correct.
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Answer:
Explanation:
From the given question:
Using the distortion energy theory to determine the factors of safety FOS can be expressed by the relation:
where; syt = strength in tension and compression = 350 MPa
The maximum shear stress theory can be expressed as:
where;
a. Using distortion - energy theory formula:
FOS = 2.183
USing the maximum-shear stress theory;
FOS = 1.977
b. σx = 110 MPa, σy = 100 MPa
Using distortion - energy theory formula:
FOS =3.322
USing the maximum-shear stress theory;
FOS = 350/2×25
FOS = 350/50
FOS = 70
c. σx = 90 MPa, σy = 20 MPa, τxy =−20 MPa
Using distortion- energy theory formula:
FOS = 350/88.88
FOS = 3.939
USing the maximum-shear stress theory;
FOS = 4.341