Nuclear SystemHydrogen Lab KAIST Chapter 2 Reactor Heat Generation Contents 21 Energy release and deposition 22 Fission energy generation after reactor scram 23 Decay heat generation ID: 396637
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Hee cheon NONuclear System/Hydrogen Lab.KAIST
Chapter 2: Reactor Heat GenerationSlide2
Contents 2.1 Energy release and deposition 2.2 Fission energy generation after reactor scram
2.3 Decay heat generation
A2.1 AppendixSlide3
2.1 Energy release and deposition Fission chain reaction: Slide4
2.1 Energy release and deposition Promp neutron life cycleSlide5
2.1 Energy release and deposition Forms of energy release
instanteneous release
delayed releaseSlide6
2.1 Energy release and deposition Fission energy release process
instanteneous release
delayed releaseSlide7
2.1 Energy release and deposition Instanteneous energy release from fission
Delayed energy release form fissionSlide8
2.1 Energy release and deposition Deposition of fission energySlide9
Prompt fission energy release
Example
2.2 Fission energy generation after reactor scramSlide10
2.2 Fission energy generation after reactor scram Delayed neutron precursors
Delayed neutron six-group constantsSlide11
2.2 Fission energy generation after reactor scram One-group approximation of six-group point kinetics equations
One group constants for U235:Slide12
2.2 Fission energy generation after reactor scram Fission energy generation rate after reactor scram
=>Slide13
2.2 Fission energy generation after reactor scram Solution of one-group approximation:
-0.05 reactivity withdrawl of solutions of one-group approximation with One group constants for U235:
promp jump=0.13Slide14
2.2 Fission energy generation after reactor scram+0.0015 reactivity insertion of solutions of one-group approximation with One group constants for U235:
promp jump=1.25Slide15
Total heat generation rate Total heat generation rate=Heat generation rate by fission(prompt+delayed neutrons) and Decay heat geenration rate HW#2: Chapt.2 #5+#6Slide16
2.3 Decay heat generation Decay energy release processSlide17
2.3 Decay heat generation Empirical Decay heat cuve of ANS-5 for U235 (Patterson-Schlitz)Slide18
2.3 Decay heat generation Simple Decay heat cuve of ANS-5 for U235(1968)
Glasstone's ANS-5.1(1971)Slide19
2.3 Decay heat generation Long-term (beyond 100yrs): decay heat cuveSlide20
2.3 Decay heat generation Long-term (beyond 100yrs): decay heat cuveSlide21
2.3 Decay heat generation Long-term (beyond 100yrs): Radioactivity