Abstract
With the enhancement of people's awareness of environmental protection and the improvement of environmental quality requirements, it is necessary to evaluate the effect of kitchen smoke exhaust on the environment. We introduced the structural definition of the parameters involved in the centralized exhaust flue and the range hood model in the centralized flue exhaust system. The iterative function calculation flow of the smoke output is clarified and the convergence of the iterative function was verified. To ensure the accuracy of parameters in the control equation which include the combined resistance coefficient of the pipeline's inner wall, we used CFD to solve resistance coefficients in the flue model of this smoke exhaust system. This solution was later verified experimentally. We deployed C# language for parametric programming, which allowed us to accommodate changes in different conditions. These include the number or height of layers, flue size, hood model, branch pipe length and type, valve angle, check valve type, and operating rate, among others. The results show that different pipe structures and smoke exhaust conditions are represented as a whole by parameters, which can be quickly calculated and displayed visually visualization program of flow changes in various layers inside the centralized exhaust flue. Lastly, we utilized the model to simulate a scenario, following which we evaluated the impact of the centralized exhaust flue in that scenario. The results of this study can guide the modeling of centralized flue systems and the evaluation of the effect of the exhaust pipe.