GATE Mechanical Engineering (ME) 2014 Shift 1 Solved Paper
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An ideal reheat Rankine cycle operates between the pressure limits of 10 kPa and 8 MPa, with reheat being done at 4 MPa. The temperature of steam at the inlets of both turbines is 500°C and the enthalpy of steam is 3185 kJ/kg at the exit of the high-pressure turbine and 2247 kJ/kg at the exit of low-pressure turbine. The enthalpy of water at the exit from the pump is 191 kJ/kg. Use the following table for relevant data.
Disregarding the pump work, the cycle efficiency (in percentage) is _______
|
Superheated steam temperature(°C) |
Pressure (MPa) |
v (m​3 /kg) |
h (kJ/kg) |
s (kJ/kg.K) |
|
500 |
4 |
0.08644 |
3446 |
7.0922 |
|
500 |
8 |
0.04177 |
3399 |
6.7266 |
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