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Steam rate is defined as [where Q = Heat input to cycle (kW), Wnet = Shaft output (kW)]:

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  1. \(\frac{1}{W_{net}} \, (\text{kg/kWh})\)
  2. \(\frac{3600 \, Q}{W_{net}} \, (\text{kJ/kWh})\)
  3. \(\frac{Q}{W_{net}} \, (\text{kJ/kWh})\)
  4. \(\frac{3600}{W_{net}} \, (\text{kg/kWh})\)

Answer (Detailed Solution Below)

Option 4 : \(\frac{3600}{W_{net}} \, (\text{kg/kWh})\)
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Detailed Solution

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Explanation:

Steam rate:

  • The capacity of a steam plant is often expressed in terms of steam rate or specific steam consumption.
  • It is defined as the rate of steam flow (kg/s) required to produce unit shaft output (1 kW).

\(Steam\;Rate = \frac{{3600}}{{{W_{net}}}}\;kg/kW - hr\)

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