Study on Ventilation Heat Transfer Performance of the Reactor Head Package Based on the High-temperature Resistant CRDM
To study the ventilation heat transfer performance of the reactor head package with high temperature resistant CRDM and without forced ventilation,the computational fluid dynamics(CFD)method is used based on the coupling principle of heat conduction and convection with the internal heat source.According to the analysis of natural convection,auxiliary ventilation,setting enclosure or not,the flow field of reactor head package and heat transfer effects of CRDM coils are studied.The results show that when the auxiliary ventilation mode of the reactor cavity is adopted,the ventilation and heat transfer performance is obviously better than the natural convection cooling mode,and the coil temperature is obviously reduced.When the enclosure device is added,more cooling air can be constrained within the enclosure,resulting in the"chimney effect",and the effect of ventilation heat transfer is better.Auxiliary ventilation can effectively improve the design margin of the high-temperature resistant CRDM and the feasibility of the integrated reactor head package.
High temperature resistant CRDMReactor head packageAuxiliary ventilation
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