Accession Number : ADA321903

Title :   Heat Transfer and Pressure Loss in Proposed Orr Fuel Assemblies,

Corporate Author : OAK RIDGE NATIONAL LAB TN

Personal Author(s) : Sanders, J. P.

PDF Url : ADA321903

Report Date : 11 MAR 1954

Pagination or Media Count : 38

Abstract : In an investigation of the cooling system for the ORNL Research Reactor, calculations have been made to relate the pressure loss in the assemblies with the flow rate. In addition an expression was developed and evaluated to give the maximum temperature of the surface in contact with the water as a function of flow rate, inlet water temperature, and maximum heat flux. After this maximum heat flux has been determined and a maximum permissible surface temperature selected, the corresponding minimum flow rate and its associated pressure loss can be found for any inlet water temperature by the methods illustrated in this report. Examples of such results are shown in Table V. As a by-product of the pressure loss calculations, certain recommendations have been made pursuant to the reduction of pressure loss in the assemblies. This recommendation is that the inlet and exit flow areas be made rectangular in cross section, thereby increasing the flow area and eliminating any sudden change from circular to rectangular cross section.

Descriptors :   *HEAT TRANSFER, *FUELS, *PRESSURE, *COOLING AND VENTILATING EQUIPMENT, *LOSSES, COMPUTATIONS, WATER, REDUCTION, FLOW RATE, CROSS SECTIONS, RECTANGULAR BODIES, HEAT FLUX, SURFACE TEMPERATURE, EXITS, INLETS, REACTOR OPERATION.

Subject Categories : Fuels
      Physical Chemistry
      Nuclear Power Plants and Fission Reactor Eng
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE