A power plant is built to provide district heating of buildings that requires 90◦C liquid water at 150 kPa. The district heating water is returned at 50◦C, 100 kPa in a closed loop in an amount such that 20 MW of power is delivered. This hot water is produced from a steam power cycle with a boiler making steam at 5 MPa, 600◦C, delivered to the steam turbine. The steam cycle could have its condenser operate at 90◦C, providing the power to the district heating. It could also be done with extraction of steam from the turbine. Suggest a system and evaluate its performance in terms of the cogenerated amount of turbine work.