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Turbines, Compressors, ExpandersA steam turbine receives
Chapter 4, Problem 87HP(choose chapter or problem)
Problem 87HP
Turbines, Compressors, Expanders
A steam turbine receives steam from two boilers (see Fig. P4.87). One flowis 5 kg/s at 3MPa, 700°C and the other flowis 10 kg/s at 800 kPa, 500°C. The exit state is 10 kPa, with a quality of 96%. Find the total power out of the adiabatic turbine.
FIGURE P4.87
Questions & Answers
QUESTION:
Problem 87HP
Turbines, Compressors, Expanders
A steam turbine receives steam from two boilers (see Fig. P4.87). One flowis 5 kg/s at 3MPa, 700°C and the other flowis 10 kg/s at 800 kPa, 500°C. The exit state is 10 kPa, with a quality of 96%. Find the total power out of the adiabatic turbine.
FIGURE P4.87
ANSWER:
Solution 86 HP:
Step 1 of 2:-
Here we have to find the total power out by the turbine in the given process.
The mass flow rate of steam is,
.
The required pressure is, .
.
For the other flow,
.
.
.
The exit state is 10 kPa.
By the adiabatic approximation,
.
The continuity equation is,
.
The energy equation can be written as,
