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Fouling of a finned-tube diesel flue-gas heat recuperator: Test Cycle I final report

Technical Report ·
OSTI ID:5325237
A finned-tube, cross-counter flow, heat recuperator was operated on the exhaust stack of a large diesel generator. Temperature data was continuously monitored to assess the effects of fouling on the heat transfer coefficient. Although relatively clean No. 2 diesel fuel was used, the fins accumulated a layer of sooty deposit over a period of several days. When the experiment was terminated at the end of 12 days, the heat transfer coefficient had been reduced nearly 50%; the reduction of heat transfer had begun to level off, although steady state had not been achieved. Examination of the deposits showed a variation from tarry deposits on the upstream tubes to fluffy soot on the downstream tubes. Although the fin gap on the downstream tubes was greatly reduced by the deposits, no bridging of the fins occurred.
Research Organization:
EG and G Idaho, Inc., Idaho Falls (USA)
DOE Contract Number:
AC07-76ID01570
OSTI ID:
5325237
Report Number(s):
EGG-FM-5768; ON: DE82013805
Country of Publication:
United States
Language:
English