熱源廠房不同通風方式的比較研究
[Abstract]:With the development of industrialization and new industrialization in China, more and more attention has been paid to the design and research of industrial plant. In the past, the functional design of industrial buildings was mainly to meet the requirements of the production process, and the consideration of human comfort was slightly inadequate, but more and more studies have shown that, The working environment and comfort of the human body directly affect the efficiency of the production process and the health of the human body itself. In the rapid economic development today, we should pay more attention to the quality of life and the guarantee of labor health. Especially for industrial buildings, indoor ventilation is the most effective way to improve indoor air quality in order to discharge indoor waste heat and pollutants as soon as possible. In view of the above problems, a variety of ventilation methods suitable for industrial buildings have been put forward. In this paper, three main natural ventilation methods are selected and the optimal design of each ventilation mode is obtained by changing the model parameters of each ventilation mode based on FLUENT software. The results show that the ventilation effect increases linearly in the range of 2m-3.5m with the ventilation mode with only upper and lower windows, and the ventilation effect between the inlet and ground height changes greatly in the range of 0.m-0.5m. In the range of 0.5m-1.3m, the ventilation effect is not obvious, the outdoor wind speed 0.5m/s has a better cooling effect on the area below 6m vertical height along the factory building, and the cooling effect in the area above 6m is obviously lower than the outdoor wind speed when 1m/s-2m/s is higher. In the improved ventilation model, the natural ventilator model and solar chimney model can make the indoor comfort increase very well, and the thermal comfort of the natural ventilator model factory building is the highest when the outdoor Y-direction wind speed is 0.5m/s. The solar chimney model has the highest indoor thermal comfort when the download width is 2 m, the height is 7 m, and the sunshine intensity is 800 W. From the evaluation of indoor thermal comfort, the average PMV difference can be reduced by using natural ventilator model is 0.59, and that by using solar chimney model is 0.16. Comparing the natural ventilator model with the solar chimney model, the average PMV difference between the former model and the solar chimney model is 0.325. In conclusion, the natural ventilator model has better ventilation effect than other natural ventilation models. However, considering the variability of climate in China, this paper qualitatively gives out which ventilation mode is better in terms of regional applicability.
【學位授予單位】:東華大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:TU834
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