[1B08-14] Boiling and Condensation

[1B08] Study on Boilling Heat Transfer Characteristics in Debris Beds

1st: Dryout Heat Flux for Bottom Heated Debris Beds

*Keishi Sakurada¹, Taira Kawakami¹, Hiroto Sakashita¹, Ayako Ono², Hiroyuki Yoshida² (1. Hokkaido University, 2. Japan Atomic Energy Agency)

Keywords:Severe accident, Debris beds, Boiling heat transfer, Critical heat flux

This study measured the dryout heat fluxes for bottom heated debris beds, where small spherical particles were placed on a 75mm diameter heating surface. The data were obtained by varying the particle size in the range of 3 to 10mm, and compared with the predicted results with the one dimensional model proposed by Lipinski.