Cogeneration is often used where a steam supply is needed for industrial process energy. Assume that a supply of 5 kg/s steam at 0.5 MPa is needed. Rather than generating this from a pump and boiler, the setup in Fig. P4.86 is used to extract the supply from the high-pressure turbine. Find the power the turbine now cogenerates in this process.

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20 kg/s supply 10 MPa 500°C High-P Low-P turbine turbine "Turbine 5 kg/s process steam 0.5 MPa 2 15 kg/s to condenser 155°C (3 20 kPa X = 0.90 FIGURE P4.86