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Solved: Steam flows steadily into a turbine with a mass
Chapter 5, Problem 556(choose chapter or problem)
Steam flows steadily into a turbine with a mass flow rate of 26 kg/s and a negligible velocity at 6 MPa and 6008C. The steam leaves the turbine at 0.5 MPa and 2008C with a velocity of 180 m/s. The rate of work done by the steam in the turbine is measured to be 20 MW. If the elevation change between the turbine inlet and exit is negligible, determine the rate of heat transfer associated with this process.
Questions & Answers
QUESTION:
Steam flows steadily into a turbine with a mass flow rate of 26 kg/s and a negligible velocity at 6 MPa and 6008C. The steam leaves the turbine at 0.5 MPa and 2008C with a velocity of 180 m/s. The rate of work done by the steam in the turbine is measured to be 20 MW. If the elevation change between the turbine inlet and exit is negligible, determine the rate of heat transfer associated with this process.
ANSWER:Step 1 of 4
Steam is expanded in a turbine. The power output is given. The rate of heat transfer is to be determined.
Assumptions are
1. This is a steady-flow process since there is no change with time.
2. Kinetic and potential energy changes are negligible.
From the steam tables (Table A-4, A5, A-6)
