高层住宅厨房集中排烟系统的模拟与优化研究
发布时间：2018-07-23 07:52
【摘要】：近年，高层建筑已是城市住宅的普遍形式，而厨房是住宅的重要组成部分，且室内空气品质也越来越受到人们的关注。目前高层住宅厨房烟道主要采用的是共用竖井的集中排烟系统，这种排烟方式存在底部油烟无法完全排出，楼层之间串烟、倒灌等问题；在整个排烟道系统中，排烟不均匀；这些现象使得油烟等有害气体大量存在于厨房中，对人体健康造成很大的危害。 本文是在国内外有关研究的基础上，对高层住宅厨房集中排烟气系统中存在的问题进行了进一步的探讨、分析与研究。主要是通过实验测试和利用计算机进行数值模拟的方法，分析研究高层住宅厨房排烟道系统，探求解决烟气无法完全排出、串烟、倒灌等问题的方法。 本文通过对33层两种不同截面排烟道系统的实验测试，并对实测数据进行分析、对比总结和分析了烟道内烟气的流动特性，以及烟道排烟效果差等的原因。在实验研究的基础上，对不同高度楼层（33、24、18、12、9、6层）的排烟道进行不同截面尺寸的数值模拟，最终确定了不同高度楼层排烟道的适合的截面尺寸。 在上述研究基础上，结合两次实验的排烟道系统模型，分别对两次实验模型进行了数值模拟，分析排烟量不足、排烟气不均匀等问题的原因。并利用数值模拟对两次实验模型进行了不同形式的优化，即烟道内部静压的竖向分区、改变烟道内部导流构件的形式等，优化方案对存在的问题有了一定程度的改善。 结合33层排烟道系统的分析方法，及优化的导流结构模型，，本文对目前常见高度的楼层24层、18层、12层、9层、6层也进行了计算机数值模拟，验证了优化导流结构模型的适用性，为以后的烟道设计和实验研究提供了一定的参考依据。
[Abstract]:In recent years, high-rise buildings have become a common form of urban housing, and kitchen is an important part of housing, and the indoor air quality has been paid more and more attention. At present, the kitchen flue of high-rise residence mainly adopts the centralized smoke exhaust system of common shaft, which has problems such as the bottom oil fume can not be completely discharged, the series of smoke between the floors, pouring back and so on, and in the whole flue system, the exhaust smoke is not uniform. These phenomena make smoke and other harmful gases exist in the kitchen, causing great harm to human health. On the basis of domestic and international research, this paper further discusses, analyzes and studies the problems existing in the centralized exhaust gas system of high-rise residential kitchen. By means of experimental test and numerical simulation with computer, this paper analyzes and studies the smoke discharge system in the kitchen of high-rise residence, and explores the methods to solve the problems such as the smoke can not be completely discharged, the smoke string and the pouring back and so on. In this paper, two kinds of flue discharge systems with different sections in 33 layers are tested, and the measured data are analyzed. The characteristics of flue gas flow in the flue and the reasons for the poor smoke exhaust effect are compared and analyzed. On the basis of the experimental study, the numerical simulation of different cross section sizes of flue on different height floors (33n24 / 1818 / 129 / 6) has been carried out, and the appropriate cross section size of flue drain with different height has been determined. On the basis of the above research, combined with the smoke exhaust system model of the two experiments, the numerical simulation of the two experimental models was carried out, and the reasons for the problems such as insufficient exhaust volume and uneven exhaust gas were analyzed. The numerical simulation is used to optimize the two experimental models in different forms, that is, the vertical partition of the static pressure in the flue and the change of the form of the internal diversion components of the flue. The optimization scheme improves the existing problems to a certain extent. Combined with the analysis method of 33 floor flue system and the optimized diversion structure model, this paper also carries on the computer numerical simulation to the 24 / 18 / 12 / 12 / 9 / 9 / 6 floor of common floor at present, which verifies the applicability of the optimized diversion structure model. It provides a certain reference for the design and experimental study of flue in the future.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU241.8;TU976.9
本文编号：2138712
[Abstract]:In recent years, high-rise buildings have become a common form of urban housing, and kitchen is an important part of housing, and the indoor air quality has been paid more and more attention. At present, the kitchen flue of high-rise residence mainly adopts the centralized smoke exhaust system of common shaft, which has problems such as the bottom oil fume can not be completely discharged, the series of smoke between the floors, pouring back and so on, and in the whole flue system, the exhaust smoke is not uniform. These phenomena make smoke and other harmful gases exist in the kitchen, causing great harm to human health. On the basis of domestic and international research, this paper further discusses, analyzes and studies the problems existing in the centralized exhaust gas system of high-rise residential kitchen. By means of experimental test and numerical simulation with computer, this paper analyzes and studies the smoke discharge system in the kitchen of high-rise residence, and explores the methods to solve the problems such as the smoke can not be completely discharged, the smoke string and the pouring back and so on. In this paper, two kinds of flue discharge systems with different sections in 33 layers are tested, and the measured data are analyzed. The characteristics of flue gas flow in the flue and the reasons for the poor smoke exhaust effect are compared and analyzed. On the basis of the experimental study, the numerical simulation of different cross section sizes of flue on different height floors (33n24 / 1818 / 129 / 6) has been carried out, and the appropriate cross section size of flue drain with different height has been determined. On the basis of the above research, combined with the smoke exhaust system model of the two experiments, the numerical simulation of the two experimental models was carried out, and the reasons for the problems such as insufficient exhaust volume and uneven exhaust gas were analyzed. The numerical simulation is used to optimize the two experimental models in different forms, that is, the vertical partition of the static pressure in the flue and the change of the form of the internal diversion components of the flue. The optimization scheme improves the existing problems to a certain extent. Combined with the analysis method of 33 floor flue system and the optimized diversion structure model, this paper also carries on the computer numerical simulation to the 24 / 18 / 12 / 12 / 9 / 9 / 6 floor of common floor at present, which verifies the applicability of the optimized diversion structure model. It provides a certain reference for the design and experimental study of flue in the future.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU241.8;TU976.9
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本文编号：2138712
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