厨房燃烧废气系统污染传播规律研究

Research on the Pollution Propagation of Exhaust-gas System from Cooking

以三种评价方法考察设抽油烟机的封闭厨房内燃烧废气系统污染扩散的规律,分析灶具的安装位置、排烟机高度范围及运行档位对废气系统扩散的影响。运用 Data Fit 拟合实验数据,建立废气系统的浓度扩散和?及总?强度分布的数学模型,利用 VC++可视化编程技术,对模拟结果与实际测试结果进行比较。得出 CO2和 CO 浓度、?扩散模拟规律图表;废气扩散热、浓度总?强度变化图表、实测数据图表、模拟与实测比较图表。厨房废气系统扩散有其规律性和方向性,用 VC++编程对厨房液化气燃烧废气系统的总?强度进行数值模拟反映总污染传播的规律性是可行的。

In this paper, investigate and analyze the pollution diffusion of exhaust gas-liquefied in combustion condition in a closed kitchen with a range hood, the effects of the location of a kitchen-stove, the height of the range hood, and the gear of the range hood on the diffusion. With the least square-fit method and experimental data, establish the distribution mathematical models of the exhaust-gas concentration and the exergy. Make software with VC＋＋ visual programming techniques to simulate the pollution distribution laws, and compare the simulation results to actual test results. Finally, the authors present the pollution distribution figures and tables of simulation results and experimental test results for CO2 and CO concentration, exergy, and exergy intensity. The research shows that the exhaust-gas diffusion has laws, direction, and reverse gradient intensity to the origin point; and it is possible for us using VC＋＋ to simulate the diffusion laws numerically at certain boundary and certain conditions for a kitchen burning liquefied gas; the higher gear of the hood is effective than the lower. This research will be of an important meaning in the field of how to eliminate polluted gas from the kitchen.