OMRE FUEL PLATE SURFACE TEMPERATURE MEASUREMENT
The surface temperatures of OMRE fuel-elements were measured with chromel-alumel thermocouple assemblies attached to the fuel plate surface. Surface temperature measurements were found to be subject to error as a result of a disturbance to the temperature field produced by the temperature measuring assembly due, in part. to the transfer of heat from this assembly to the coolant. Experimental determinations were made of the extent of perturbation of the true surface temperature. At OMRE operating conditions of 750 deg F true fuel-plate surface temperature and 600 deg F bulk coolant temperature. the observed surface temperature was lower than the true surface temperature by 30% of the difference between the true surface and the bulk coolant temperatures, a temperatare depression of 45 deg F. At reactor operating conditions of 750 deg F true fuel- plate surface temperatare and 500 deg F bulk coolant temperature, the observed surface temperature was lower than the true temperature by 35% of the true surface-bulk coolant temperature difference, a temperature depression of 88 deg F. Factors for correction of observed OMRE surface temperature are presented. (auth)
- Research Organization:
- Atomics International Div., North American Aviation, Inc., Canoga Park, Calif.
- DOE Contract Number:
- AT(11-1)-GEN-8
- NSA Number:
- NSA-14-014564
- OSTI ID:
- 4170003
- Report Number(s):
- NAA-SR-4047
- Country of Publication:
- United States
- Language:
- English
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