EQUILIBRIUM QUALITY AND MASS FLUX DISTRIBUTIONS IN AN ADIABATIC 3-SUBCHANNEL TEST SECTION

An experiment was designed to measure the fully developed quality and mass flux distributions in an adiabatic three-subchannel test section. The three subchannels had the geometrical characteristics of the corn er, side, and interior subchannels of a boiling wafer reactor (BWR-5) rod bundle. Data collected with Refrigerant-114 at pressures ranging f rom 7 to 14 bars, simulating operation with water in the range 55 to 1 03 bars are reported. The average mass flux and quality in the test se ction were in the ranges 1300 to 1750 kg/m(2) . s and -0.03 to 0.25, r espectively. The data are analyzed and presented in various forms.