Old pile HCR operating temperatures [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1963.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 9 pages : digital, PDF file
- Additional Creators:
- General Electric Company
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- A study was made to determine operating temperatures of old pile HCR sheaths. The calculations were performed with the aid of a FORTRAN coded program for the IBM 7090. The difficulty of determining the correct value for the contact coefficient between the HCR and the graphite channel at any point in the channel length resulted in performing the calculations in a parametric style. The independent system parameters were varied during the calculations. These parameters are diametral spacing between the poison rings and the outer aluminum sheath, heat generation rate or reactor power level, the heat transfer contact coefficient between the rod and the graphite channel, and the cooling water temperature or cooling flow rate. For contact coefficients between 200 and 700 Btu/hr -- ft² -- °F and for diametral clearances around the poison of 5 mils to 20 mils, the maximum sheath temperature was calculated to vary between 350°F and 650°F. The dependence of sheath temperature upon the rod coolant temperature or coolant flow rate was found to be small enough to be neglected in the normal flow range of 12 gpm to 15 gpm. For a given increase of the average coolant temperature, the maximum sheath temperature increased about one half as much. Reversing the coolant flow in an HCR would not significantly reduce the maximum sheath temperature.
- Published through SciTech Connect.
- Type of Report and Period Covered Note:
- Topical; 10/01/1963 - 10/01/1963
- Funding Information:
View MARC record | catkey: 14371317