The Model Test And Ventilation Optimization In Nuclear Power Plant Turbine Room

In global energy growing shortages of cases, it is not practical using of mechanical ventilation inlet, mechanical ventilation of this program in nuclear steam turbine engine room. In ensuring that meet the technical requirements, the rational introduction of natural wind, using natural and mechanical ventilation inlet combination of ventilation is of great significance.The layout and calorific value between Nuclear power station turbine room and coal-fired power plants have very big difference, its heat pipe and supporting system is more complex and the surface temperature is low. At present there is not yet relevant design rules in this area, so that designing works produced great confusion. In order to making the current and future projects having evidence-based,we establish the 1/20 of newly-compiled physical model test of Fuqing nuclear power plant turbine room. Experimental results show that the mathematical model of this topic and boundary conditions are right, then numerically simulates and optimizes the ventilation plan of fuqing nuclear power station turbine room and various types of influence factor.Basing on the basis of theoretical analysis, this paper deduced natural ventilation and mechanical exhaust model similarity criterion equation and various parameters of similar scale according to the flow of energy equation of fluid mechanics.With these formula, we can do natural ventilation and mechanical exhaust model test causing by hot-press effect in different altitude and different climates. This model test basing on other hydropower model test experience, we established FuQing nuclear physics model taking thr geometric scale of 1/20.There is little difference between the model test and model simulation on the temperature and volume, this shows that this topic selection of mathematical model and boundary conditions is correct and reasonable. The data between model simulation and prototype simulation is also basically identical, this shows that the simularity scale between archetypes and model is correct.Comparing prototype simulation,model simulation with model test, we verified the reliability model test and correctness of simularity scale, also proved that numerical model and numerical results are accurate in this paper.Model test has validated the correction of the model simulation. Then I can use the CFD simulation method to simulate primitive condition (natural ventilation, mechanical exhaust scheme)of fuqing nuclear steam turbine engine rooms:the temperature distribution of the lower flower meets the design requirements; the average face temperature of base layer and running layer meets the design requirements, but existing local high temperature area; the temperature distribution of oygen room doesn't basically meet the design requirements. Under the previous work of FengZhen brother,I put forward on the basis of optimized solutions, including total exhaust adjusting analysis; natural ventilation, natural wind feasibility analysis; adjustment analysis of the area of wind window; the combination of feasibility analysis of natural ventilation and mechanical ventilation, edible width adjustment analysis, induced fan set analysis.In this paper, the results can be directly applied not only specific projects, for similar power plants and similar buildings ventilation and structural parameters of the program formulation has important reference value...