关键词: 临界热负荷试验;二相流;沸腾汽化热

Abstract: This paper is experimentally and theoritically to investigate the critical heat flux of flow in pipes. From the analysis of the boiling mechanism and processing by means of the analogy principle of two-phase flow, we have been derived a criterion equation to express critical heat flux. Correlated with 6 different coolant, 355 experimental data,constant A and exponents K,m,n are obtained. With a dimensionless correction, term to calculate the effect on the variating sloted height of the cooling jacket, the previous equation will be a general equation to calculate the critical heat flux of flow in pipes.

Key words: Critical thermal load test;Two-Phase flow;Boiling;Gasification heat