Analysis And Optimization Of Labor Environment Characteristics In Industrial Buildings With High Pollution Emission

With the development of China’s industrialization,the area of industrial buildings has increased greatly,and it is now in the forefront of the world.But at the same time,the pollution caused by production is becoming more and more serious.The quality of working environment in industrial buildings is related to the health of workers,which is the focus of social attention.At present,the industrial buildings are mainly used the combination of mechanical exhaust and natural exhaust.However,the high-pollution-emitting industrial buildings are different from general industrial buildings in that they have high heat emissions and large pollutant concentration emissions.The characteristics of the labor environment are affected by factors such as different intensity heat sources and pollutant emission characteristics in the plant.At present,there are few studies on this problem.Therefore,this paper discusses the temperature characteristics and pollutant emission characteristics of the working environment in industrial buildings with high pollution emission under different ventilation modes;Through the response surface optimization experiment design,the most optimized labor environment characteristics are obtained.In this study,an experimental device model with heat source and mechanical exhaust device was built for industrial buildings with high pollution emission.It is found that the temperature efficiency and pollutant discharge efficiency are affected by the mechanical exhaust speed,and there is an optimal exhaust speed to maximize the temperature efficiency and pollutant discharge efficiency.It is found that the intensity of heat source and exhaust air volume affect the diffusion and removal of gas pollutants,while the prevention and control of dust pollution need to reduce the violent flow of low-level air caused by exhaust air.Further,on the basis of experimental research,the Central Combination Design CCD and Box Behnken Design BBD response surface analysis methods were used to study the influence of four factors of heat source intensity,mechanical exhaust volume,mechanical exhaust speed and compound ventilation mode on the working area temperature and temperature efficiency.The impact of pollution discharge efficiency and capture efficiency,aiming to obtain a better working environment exhaust condition setting.The test results show that within the parameter change range,the actual measured value of the working zone temperature varies from 1.14 to2.67°C,the temperature efficiency varies from 3.32 to 9.76,the sewage efficiency varies from 3.12 to 5.52,and the collection efficiency varies.It is 64.3%～94.5%.The optimization model of each response surface index is in line with the secondary optimization model.Through the analysis of the interactive influence of the parameters on the index,it is found that the intensity of the heat source and the compound ventilation mode,the intensity of the heat source and the mechanical exhaust volume,the intensity of the heat source and the mechanical exhaust speed,and the mechanical exhaust The amount and mechanical exhaust speed,mechanical exhaust speed and compound ventilation mode have a significant interaction on the labor environment temperature field and pollutant emission response indicators;for the optimization of the labor environment temperature field,when the heat source intensity is 245.96W and the mechanical exhaust When the air volume is 75.98m~3/h,the mechanical exhaust speed is 0.81m/s,and the compound ventilation mode is mode 5,the working area temperature and temperature efficiency reach the optimal values,1.03°C and 12.86 respectively;optimized for labor environmental pollutants,When the heat source intensity is 299.48W,the mechanical exhaust volume is70.55m~3/h,the mechanical exhaust speed is 1.24m/s,and the compound ventilation mode is mode 4,the pollution discharge efficiency and capture efficiency reach the optimal values,which are 5.76 And 94.87%.This study reveals the characteristics of labor environment in industrial buildings with high emission of pollutants under different combination forms,which has certain significance and application value for improving the thermal environment and increasing the emission rate of pollutants.