ORNL-TM-7207 - the Molten Salt Energy Technologies Web Site

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43
1 2 3 4 5 6 7 8
AXIAL POSITION (mi
Fig. 8. Core hot-channel linear power profiles.
for the latter a ~su~~ption; the present analysis is not detailed enough to
yield a better estimate.
As n~tgd previously, the hot-ckannd axial linear power profiles of
an interior and exterior channel are shown in Fig. 8. The hot channel oc-
curs (radially) at the boundary between zones A and B. The central loca-
tion of zone A (2.65 t~ 5.65 an) can be seen by the discontinuities in the
linear power curves. The curves reflect both heat generated within the
salt and heat transferred from the graphite to the salt.
Figure 9 S~QWS calculated temperatures in the interior and exterior
channels and the maximum temperature in the moderator as functions of ax-
ial position for the core hot channel. The highest moderator temperature
occurs at a position 3.0 rn above the core midplane. Isotherms in the 30"
moderator segment at this l~cati~n are shown in Pig. 10.
of RQ heat transfer within 15" ~f the contact point causes substantial
distortion of the isotherms near the outer surface. The calculated maxi-
mum graphite temperature is 741°C (1366"F), which is close t o the maximum
allowable temperature (-720°C.) for zero positive irradiation growth at a
total fluence of 3 x
1026 m-2-
The assumption