热源厂房不同通风方式的比较研究

发布时间：2018-09-07 10:36

【摘要】：随着我国工业化进程和新型工业化道路的不断深入,工业厂房的设计和研究越来越被得到重视。以往对工业厂房的功能设计主要是为了满足生产工艺的要求,对人体舒适度的考虑略显不足,但越来越多的研究表明,人体所在的工作环境和舒适好坏度直接影响到生产过程的效率和人体自身的健康状况。在经济飞速发展的今天,我们要更多的关注人们生活品质和劳动健康的保证。而特别对于工业厂房来说,为了尽快排出室内的废热和污染物,最有效改善室内空气品质的方法应是室内通风换气。针对以上问题,目前研究界提出了多种适合工业厂房的通风方式。本文选取了其中主要的三种自然通风方式,基于FLUENT软件、通过分别改变三种通风方式下的模型参数,得出了每种通风方式下的最优化设计。结果显示,只上下开窗的通风模式下,进风口高度在2m-3.5m范围内变化内通风效果基本成线性增加；进风口距地面高度在0.m-0.5m范围内通风效果变化较大,在0.5m-1.3m范围内通风效果增强不明显；室外风速0.5m/s时对沿厂房垂直高度6m以下的区域有较好的降温效果,在高于6m区域降温效果明显不如1m/s-2m/s时的室外风速。在改进通风模式后的厂房模型中,自然通风器模型和太阳能烟囱模型都能很好的使室内舒适度增加,自然通风器模型厂房在室外Y向风速为0.5m/s下的热舒适性最高；太阳能烟囱模型下载宽度2m、高度7m、日照强度800W情况下的室内热舒适性最高。从室内热舒适性评价来看,使用自然通风器模型能降低的平均PMV差值为0.59、使用太阳能烟囱模型能降低的平均差值为0.16。比较自然通风器模型和太阳能烟囱模型,前者比后者的平均PMV差值为0.325。综上所述,本文模型条件下采用自然通风器模型比其他自然通风模式具有更好的换气效果。但考虑到中国气候的多变性,本文定性地给出了从区域适用性上运用何种通风方式更佳
[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.
【学位授予单位】：东华大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU834

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