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ORNL-2106 - the Molten Salt Energy Technologies Web Site

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PERIOD ENDING JUNE 10, 1956<br />

TABLE 1.4.4. SUMMARY OF SMALL HEAT EXCHANGER TEST STAND OPERATION<br />

Hours of Total Number of<br />

Test Unitu Noniso<strong>the</strong>rmol Hours of Thermal Reason for Termination<br />

<strong>ORNL</strong> heat exchanger No. 1<br />

(type SHE-2)<br />

Process Engineering heat exchanger<br />

No. 1 (type SHE-2)<br />

York radiator No. 4<br />

(mod if ication 2)<br />

York radiator No. 7 (revised design)<br />

Circulating cold trap No. 1<br />

(4 in. in diameter)c<br />

Circulating cold trap No. 6<br />

(4 in. in diameter, modification 1)<br />

<strong>ORNL</strong> heat exchanger No. 2<br />

(type SHE-2)<br />

Stru<strong>the</strong>rs-Wells heat exchanger No. 1<br />

(type SHE-2)<br />

York radiator No. 5<br />

(modificotion 2)<br />

Circulating cold trap No. 4<br />

(4 in. in diameter)<br />

Optrat ion Operat i on' cycles<br />

Test Stand B<br />

104 1 207 1 36<br />

0 120<br />

748 1356 31<br />

0 120<br />

Test Stand C<br />

995<br />

216<br />

102 634 15<br />

4 280 2<br />

106 914 17<br />

ted during this report period.<br />

'For tests In progress <strong>the</strong> total operating time is shown os of May 15, 1956.<br />

CThis type of cold trap previously referred to as 80-gal system.<br />

diator No. 4 were rem0<br />

stand for metallurgical examination.<br />

Heat transfer data, fuel pressure d<br />

drop data for <strong>the</strong> heat exchanger<br />

ntial agreement with data previously<br />

d did not change throughout he test.<br />

r heat transfer data substantially agreed<br />

ata for <strong>ORNL</strong> radiator No. 3, and <strong>the</strong> air<br />

data substantially agreed with <strong>the</strong><br />

bridge radiators Nos. 1 ond 2, all<br />

previously reported.I0 The rpdiator NaK pressure<br />

drop increased approximately 30% during <strong>the</strong> test<br />

operation. Much of <strong>the</strong> test program on <strong>the</strong>se<br />

914<br />

Test completed<br />

Test continuing<br />

Test completed<br />

Test continuing<br />

Test completed<br />

Test continuing<br />

Removed when restriction<br />

to fuel flow developed<br />

Test terminated because<br />

of restriction to fuel flow<br />

Test continuing<br />

Replaced by new cold trap<br />

units consisted of <strong>the</strong>rmal cycling operations. A<br />

complete cycle consisted of 16 hr of power opera-<br />

tion, with maximum and minimum NaK temperatures<br />

of 1275 and 1005OF, respectively, and 8 hr of<br />

iso<strong>the</strong>rmal operation at 1285OF. The rate of NaK<br />

temperature change during <strong>the</strong> transition from one<br />

condition to <strong>the</strong> o<strong>the</strong>r was approximately 7OF/sec,<br />

The heat exchanger log-mean temperature difference<br />

changed from O°F during iso<strong>the</strong>rmal operation to<br />

74OF during power operation.<br />

York radiator No. 7 (Fig. 1.4.8) and Process<br />

Engineering Co. heat exchanger No. 1, type SHE-2,<br />

were installed in stand 6, and test operations were<br />

59

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