کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8067129 | 1521082 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative neutronic study of homogeneous and heterogeneous thorium fuel based core design in a lead-cooled fast reactor
ترجمه فارسی عنوان
مطالعه نوترونی مقایسه ای از طراحی هسته مبتنی بر سوخت توریم همگن و ناهمگن در یک راکتور سریع سرب سرد
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
In the present work the utilization of thorium is investigated in a lead-cooled fast reactor. Two thorium fuel strategies were analyzed: a homogeneous and a heterogeneous mixture of 232Th were set in the European Lead-cooled Fast Reactor core model. For this, the Monte Carlo Serpent-2.27 code and the JEFF-3.1 cross section library were used to perform the calculations. Three neutronic parameters were analyzed for each fuel strategy: the effective neutron multiplication factor (keff) for a cycle of 900â¯days, the Doppler constant and the reactivity effect of coolant density. With the homogeneous mixture of 232Th the neutron multiplication factor increases during the whole operating cycle (900â¯days), allowing a longer fuel cycle, keeping negative values for the Doppler constant and the reactivity effect of coolant density, with â692â¯pcm and â148â¯pcm, respectively. On the other hand, the addition of 232Th heterogeneously in the core showed that there is the necessity to have a reactivity excess around 2.2% Îk to fulfill the same fuel operating cycle. Even when there is a ThO2 blanket zone, the 233U production is not enough to increase the keff value and to enlarge the fuel operating cycle. Otherwise, the Doppler constant and the reactivity effect of coolant density are also negative values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 114, April 2018, Pages 102-109
Journal: Annals of Nuclear Energy - Volume 114, April 2018, Pages 102-109
نویسندگان
Luis-Carlos Juárez-MartÃnez, Juan-Luis François,