本文關鍵詞： 建筑廚房 補風方式 氣流組織 數(shù)值模擬 節(jié)能分析　出處：《沈陽建筑大學》2013年碩士論文　論文類型：學位論文

【摘要】：隨著近年來經濟改革的深入,人們的生活質量不斷提高,對身體的健康和生活品質的要求也越來越高,身體健康不僅僅限于沒有疾病的困擾,更廣泛的表示健康沒有受到威脅。室內空氣品質與其均有聯(lián)系,所以受到了廣泛的關注。廚房對于人們的生活必不可少,在烹飪的過程中所產生的污染物和廢熱嚴重影響著室內的環(huán)境。單獨采用油煙機排風時,在室內外壓差的作用下,需要向廚房內補充氣體,由于季節(jié)氣候自然通風受到限制。在門窗關閉的情況下,由門窗的縫隙向廚房內補風,補充的風量很大。導致氣流組織不合理,使室內環(huán)境受到污染甚至二次污染。 本文利用CFD——luent軟件對居住建筑廚房內設置單獨的補風口,在不同的工況下進行模擬研究。室內空氣流動為湍流,采用結構型網格和非結構型網格的結合應用的網格劃分方法,污染物的設定采用的是空氣與碳氧化合物的組合,選用壓力基求解器求解控制方程。 本課題探討在操作臺上，灶臺四周(抽油煙機的正下方)增設條縫型補風口對廚房進行補風。運用CFD——luent模擬軟件對居住建筑廚房是否增設補風口狀態(tài)下的氣流組織進行模擬分析,得出在不同工況狀態(tài),廚房內的速度分布、溫度分布、污染物濃度分布的模擬態(tài)勢,分析得到較理想的工況。運用實驗的方法,對某一用戶的廚房進行測試,得到一些真實有效的數(shù)據，，分析推斷出各參數(shù)的變化趨勢。利用測得數(shù)據與模擬結果對比分析,望得到真實地、有效地、具有普遍性的結果。 在建筑中增設補風風道,在不占用太多建筑面積的前提下,廚房增設補風口后,不但油煙機的排煙效果可以得到提升,而且公共排煙道可以從原設計的面積為0.24m2,減小至0.215m。。補風風道的面積為0.129m2。在建筑中只增加了0.104m2的補風風道。效果卻大大的不同。 經研究發(fā)現(xiàn),在灶臺的四周設置補風口,對廚房進行補風,能提供在油煙機工作時,廚房所需補充的風量及時的補風,減少了門窗縫隙的滲透量,間接地減少內耗,達到節(jié)能的目的。另外,從室外引進新鮮空氣,提供了燃燒時所需要的氧氣,促進了燃燒。在鍋口處形成了垂直向上的空氣幕,控制污染物的擴散,提高油煙機的排煙效率。對廚房內污染物的防治和合理的氣流組織研究具有指導意義。
[Abstract]:With the deepening of economic reform in recent years, the quality of life of people is constantly improving, and the requirements of health and quality of life are becoming higher and higher. Physical health is not limited to the absence of disease. More broadly, health is not threatened. Indoor air quality is linked to it, so it has received widespread attention. Kitchens are essential to people's lives. In the cooking process of pollutants and waste heat seriously affect the indoor environment. The use of fume machine exhaust air, in the indoor and outdoor pressure difference, need to supply gas to the kitchen. Natural ventilation is restricted by seasonal climate. When doors and windows are closed, the gap between the doors and windows is used to replenish the air in the kitchen, and the amount of additional air is very large, which results in unreasonable airflow organization. Make indoor environment be polluted even secondary pollution. In this paper, CFD--luent software is used to set up a separate air supply outlet in the kitchen of residential building, and the simulation study is carried out under different working conditions. The indoor air flow is turbulent. In this paper, the combination of structured grid and non-structural grid is used to solve the problem. The air and carboxylic compounds are combined to set the pollutant, and the pressure base solver is used to solve the governing equation. This topic is discussed on the platform. Around the stove (directly below the range hood). The CFD--luent simulation software is used to simulate the airflow organization in the residential building kitchen. The simulation situation of the velocity distribution, temperature distribution and pollutant concentration distribution in the kitchen under different working conditions was obtained. The ideal working conditions were analyzed and the kitchen of a certain user was tested by the method of experiment. Some real and effective data are obtained, and the variation trend of each parameter is analyzed and inferred. By comparing the measured data with the simulation results, we hope to get the true, effective and universal results. In addition in the building air supply duct, in the premise of not occupying too much building area, the kitchen after the addition of tuyere, not only the smoke exhaust effect can be improved. And the public flue can be designed from the original area of 0.24m2. The area of the air supply duct is 0.129 m ~ 2. Only 0.104 m ~ 2 is added to the building, but the effect is very different. Through the study, it is found that the installation of a supplementary air vent around the stove can provide a timely supply of air in the kitchen when the fume machine is working, thus reducing the infiltration of the gap between the doors and windows. Indirectly reduce internal friction to achieve the purpose of energy saving. In addition, the introduction of fresh air from the outside provides the oxygen needed for combustion and promotes combustion. A vertical upward air curtain is formed at the orifice of the pan. It is of great significance to control the diffusion of pollutants and improve the efficiency of soot exhaust, which is of great significance to the prevention and control of pollutants in kitchen and the study of reasonable airflow organization.
【學位授予單位】：沈陽建筑大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU834

【相似文獻】

相關期刊論文 前10條

1 陳國文,李麗;淺論可持續(xù)發(fā)展形勢下的居住建筑創(chuàng)作[J];糧食流通技術;2003年06期

2 楊莉,張文華;居住建筑設置自動噴水滅火系統(tǒng)的探討[J];給水排水;2004年11期

3 陳v

本文編號：1445150