The “supercritical CO2 heat removal system”, sCO2-HeRo, safely, reliably and efficiently removes residual heat from nuclear fuel without the requirement of external power sources. This system therefore can be considered as an excellent backup cooling system for the reactor core or the spent fuel storage in the case of a station blackout and loss of ultimate heat sink. sCO2-HeRo is a very innovative reactor safety concept and provides breakthrough options with scientific and practical maturity, which will be finally demonstrated and experimentally proven by reactor simulation studies in the unique glass model of the Gesellschaft für Simulatorschulung GfS.

Our main objective is to show the proof of the concept of the sCO2-HeRo system by:

  • Designing a compact heat exchanger to transport the decay heat to the supercritical CO2 cycle which energy is also used for driving the self-propellant cycle,
  • Designing a turbo-machine set which is self-propellant and self-launching,
  • Evaluating a sink heat exchanger to transport the decay heat from the supercritical CO2 cycle to the alternative ultimate heat sink (ambient air),
  • Ensuring quality assurance by individual component reviewing and testing the individual components in a supercritical CO2 loop to demonstrate the fulfilment of industrial standards,
  • Proofing the sCO2-HeRo system regarding safety, reliability and the possibilities for retrofitting by implementing the system into a unique glass model run by the Gesellschaft für Simulatorschulung (GfS)