chapter  5
92 Pages

Nuclear Power Plants

The conversion factor C can also be determined in the same framework (§3.3.2). According to the definitions of subsec. 3.3.3, we can write for thermal neutrons:

5.1.5 Thermal Reactor Reflectors

5.1.6 Advantages and Drawbacks of Enriched Uranium in Thermal Reactors

5.2 THERMOHYDRAULICS OF THE CORE

5.2.1 Introduction

5.2.2 Radial Distribution of Temperatures in the Fuel

The temperatures in the fuel are governed by the equation of thermal conduction. This equation follows, as we know, on the one hand from Fourier's law

(5.5)

+ A

w r T(r) = - _c ___ + A ln r + B

(5.6)

written:

whence, by considering equation (5.7):

(5.9)

(5.10)

5.2.3 Axial Temperature Distributions

t in W em " and the lengths z in em. ra es w1 We are thus led to solve the equation:

w1(z) dz (5.14)

FIGURE 5.7.