Blowdown Heat Transfer Phenomena in the Scaled BWR Test System.

摘要

Experimental results from the Boiling Water Reactor (BWR) blowdown heat transfer program (BDHT),obtained in the BWR scaled-test apparatus,are used to provide a basis for evaluating BDHT phenomena. BWR loss-of-coolant accident (LOCA) analysis using the current BWR LOCA evaluation method,when applied to the test apparatus,shows a substantial margin in the prediction of peak cladding temperature. Observed thermal-hydraulic and heat transfer phenomena are evaluated and compared with the current method. Specific phenomenologically based model refinements are recommended for break flow,void distribution,and heat transfer. (ERA citation 01:013292)