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缩小比例的单项和整体性试验台架对研究和开发大型先进压水堆核电站及其分析验证程序都具有重要意义,而由缩比引入的相关现象的失真又直接影响了对台架的设计和试验结果的理解。本文以等效换热系数的形式对非能动安全壳冷却系统(PCS)壳内液膜冷凝在试验台架上的缩比失真进行分析,结合H2TS比例分析方法,系统评价了这种失真对模拟台架中壳内压力响应的作用。结果表明,台架缩比对壳内冷凝液膜换热的影响是保守的。
Reduced proportions of single and unitary test benches are important for the research and development of large advanced PWR nuclear power plants and their analysis and verification procedures, and the distortions associated with the introduction of scaling directly affect the design and / Understanding of test results. In this paper, the shrinkage distortion of the liquid film condensation in the passive containment cooling system (PCS) shell on the test bench is analyzed in the form of equivalent heat transfer coefficient. Combined with the H2TS ratio analysis method, The role of the pressure response inside the gantry. The results show that the influence of bench shrinkage on the heat transfer of condensate film in the shell is conservative.