An uninsulated steam turbine receives steam at 10.0 MPa, 600°C, and exhausts steam at 10 kPa, 100°C. The mass flow rate of the steam is 45 kg/s. Using your turbine model, plot the power produced by the turbine for heat transfer rates for the turbine ranging from 0 MW to -10.0 MW.
Given: P1 = 10.0 MPa; T1 = 600°C; T2 = 100°C; m?=45 kg/s; P2 = 10 kPa; Steam
State 1 is the inlet, state 2 is the outlet.
Assume: For a turbine, assume steady-state, steady-flow, single-inlet, single-outlet flow, with ?KE = ?PE = 0
What will be an ideal response?
With these assumptions, the First Law for open systems reduces to W?=m?(h1?h2)+Q?
For steam, the following properties can be found:
h1 = 3625.84 kJ/kg
h2 = 2687.43 kJ/kg
The power produced will vary with heat transfer rate:
Reducing the heat losses through insulating will increase the power produced by the turbine.
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