Pressure Coefficient
المؤلف:
U.S. Department of Commerce, National Technical Information Service, 1993
المصدر:
The Nuclear Physics and Reactor Theory Handbook
الجزء والصفحة:
p 27
18-4-2017
2080
Pressure Coefficient
The reactivity in a reactor core can be affected by the system pressure. The pressure coefficient of reactivity is defined as the change in reactivity per unit change in pressure. The pressure coefficient of reactivity for the reactor is the result of the effect of pressure on the density of the moderator. For this reason, it is sometimes referred to as the moderator density reactivity coefficient. As pressure increases, density correspondingly increases, which increases the moderator-to-fuel ratio in the core. In the typical under moderated core the increase in the moderator-to-fuel ratio will result in a positive reactivity addition. In reactors that use water as a moderator, the absolute value of the pressure reactivity coefficient is seldom a major factor because it is very small compared to the moderator temperature coefficient of reactivity.
الاكثر قراءة في مواضيع عامة في الفيزياء النووية
اخر الاخبار
اخبار العتبة العباسية المقدسة
