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In a Rankine cycle, the enthalpies at turbine entry and outlet are 3159 kJ/kg and 2187 kJ/ kg, respectively. If the specific pump work is 2 kJ/kg, the specific steam consumption (in kg/ kWh) of the cycle based on net output is.
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- 4.7815 kg/kW.h
- 3kg/kW.h
- 3.7815 kg/kW.h
- 6 kg/kW.h
Correct Option: C
| Specific steam consumption = | |
| WT - WP |
Now, WT = h2 – h1
= 3159 – 2187 kJ/kg
∴ WT = 972 kJ/kg
and WP = 20 kJ/kg
| Thus specific steam consumption = | kg/kW-h 972 – 20 = 3.7815 kg/kW.h | |
| 972 - 20 |
