Problem 1. Two-thirds of the energy content of fuel entering a 1,000 MWe nuclear power plant is removed by condenser cooling water that is withdrawn from a local river (there

are no stack losses; i.e. the plant efficiency is 1/3). The river has an upstream flow of 100 m³/s and a temperature of 20°C. (a) If the cooling water is only allowed to rise in temperature by 10 °C, what flow rate from the river would be required? (b) How much would the river temperature rise as it receives the heated cooling water?