The Flow Instability Analysis for Steam Generator for China Experimental Fast Reactor (CEFR)

Abstract

Steam generator plays an important role in nuclear power plant, especially in a fast reactor. As a barrier to separate the high temperature sodium and high pressure water/steam, it is important to make sure the safety of the steam generator. For this purpose, it is necessary to guarantee that there is no flow instability happened in the tubes of the steam generator. In order to ensure that the steam generator is stable in all conditions, this paper uses the method of Khabenskii to calculate the minimum inlet resistance coefficient to prevent flow instability in China Experimental Fast Reactor (CEFR) steam generator. The needed inlet resistance coefficient calculated is 1001.2. In addition, this paper analysis the effect of mass flow rate, pressure, subcooling and thermal power on flow instability in steam generator of CEFR. The result demonstrates that the increase of flow rate, pressure and subcooling and the decrease of thermal power will stabilize the flow instability in CEFR steam generator.