Fuel Elements
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Exercise:
The nuclear power station in Leibstadt has an average output power of PeO at an efficiency of about etO. abcliste abc Calculate the mass equivalent to the thermal energy converted to electric energy per day. How does this mass “disappear”? abc The fuel elements become lighter even when they are contained in a gas-tight container. Give a reason for this phenomenon. Can this effect be measured? abcliste
Solution:
abcliste abc The input energy is sscEin fracsscEouteta fracsscPel Delta teta It follows for the equivalent mass m fracsscEinc^ mF fracPe times tet times ncc^ fracPe times tset times ncc^ m resultmgP The mass is equivalent to the change in nuclear binding energies for the nuclear reactions in the reactor. The energy is converted to kinetic energy of the reaction products observed as thermal motion and electromagnetic radiation. abc The energy released in the nuclear reactions is transferred to the water surrounding the fuel elements heat conduction radiation. The decrease in mass is measurable although there are practical issues. abcliste
The nuclear power station in Leibstadt has an average output power of PeO at an efficiency of about etO. abcliste abc Calculate the mass equivalent to the thermal energy converted to electric energy per day. How does this mass “disappear”? abc The fuel elements become lighter even when they are contained in a gas-tight container. Give a reason for this phenomenon. Can this effect be measured? abcliste
Solution:
abcliste abc The input energy is sscEin fracsscEouteta fracsscPel Delta teta It follows for the equivalent mass m fracsscEinc^ mF fracPe times tet times ncc^ fracPe times tset times ncc^ m resultmgP The mass is equivalent to the change in nuclear binding energies for the nuclear reactions in the reactor. The energy is converted to kinetic energy of the reaction products observed as thermal motion and electromagnetic radiation. abc The energy released in the nuclear reactions is transferred to the water surrounding the fuel elements heat conduction radiation. The decrease in mass is measurable although there are practical issues. abcliste