η = Pélectrique / PthermiquePowers in the same unit; η dimensionless.
Use when: Specify gross or net electrical power depending on the balance chosen.
From nuclear reactor to electricity
Understand the energy conversion chain of a nuclear power plant.
What is happening?
Controlled fission provides heat in the reactor. This heat powers a steam cycle; a turbine drives an alternator which converts mechanical work into electrical energy.
In a pressurized water plant, the primary and secondary circuits have distinct functions and exchange heat in the steam generator. Cooling removes heat that is not converted into electricity.
The formulas, with their conditions.
Q̇ = ṁ ΔhQ̇: W; ṁ: kg/s; Δh: J/kg.
Use when: Simplified assessment of an exchanger in steady state, losses neglected.
Where is this principle used?
Nuclear power plant
Produce electricity and manage heat exchanges.
Energy systems engineering
Study turbines, exchangers and energy balances.
What to observe in the experiment
Follow the energy path between reactor, steam generator, turbine and alternator. Distinguish this path from that of each fluid.
References and readings
This sheet explains the principles and their assumptions. Educational simulation can simplify the process; an industrial model requires suitable data and validation.
Have you understood the essentials?
Only one correct answer per question. Answer all three questions, then view the answer key.
Intu Lab · Understanding sheet · Kimba Christian