γ-ray Test void ratio of gas-liquid two-phase flow and its error analysis in evaporative cooling generator

In the study of gas-liquid two-phase flow and heat transfer of evaporative cooling generator, has important significance to test the accuracy of void ratio. This paper first introduces the principle of ray testing, should pay attention to the selection of γ-ray source. The ray test two-phase flow void ratio of the experimental platform is established. The test data and drift model, one-dimensional model and volumetric gas rate numerical calculation for comparison, analysis of the law of the void ratio of ray test. The error of the test is mainly studied, and the maximum error formula of measuring the void ratio is deduced, and the cause of the error is analyzed. That the ray test evaporative cooling generator gas-liquid void ratio has higher accuracy, is an effective means of testing.