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In a power plant, water (density = 1000 kg/m³) is pumped from 80 kPa to 3 MPa. The pump has an isentropic efficiency of 0.85. Assuming that the temperature of the water remains the same, the specific work (in kJ/kg) supplied to the pump is
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- 0.34
- 2.48
- 2.92
- 3.43
Correct Option: D
| Specific volume = | |
| Mass of fluid |
| = | = | = 10-3m³/kg | ||
| ρ | 1000 |
| η = | |
| Actual compressor work |
| Actual compressor work = | |
| η |
| = | |
| 0.85 |
| = | = 3.43 kJ/kg. | |
| 0.85 |
