本文關(guān)鍵詞： 建筑廚房 補(bǔ)風(fēng)方式 氣流組織 數(shù)值模擬 節(jié)能分析　出處：《沈陽(yáng)建筑大學(xué)》2013年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：隨著近年來(lái)經(jīng)濟(jì)改革的深入,人們的生活質(zhì)量不斷提高,對(duì)身體的健康和生活品質(zhì)的要求也越來(lái)越高,身體健康不僅僅限于沒(méi)有疾病的困擾,更廣泛的表示健康沒(méi)有受到威脅。室內(nèi)空氣品質(zhì)與其均有聯(lián)系,所以受到了廣泛的關(guān)注。廚房對(duì)于人們的生活必不可少,在烹飪的過(guò)程中所產(chǎn)生的污染物和廢熱嚴(yán)重影響著室內(nèi)的環(huán)境。單獨(dú)采用油煙機(jī)排風(fēng)時(shí),在室內(nèi)外壓差的作用下,需要向廚房?jī)?nèi)補(bǔ)充氣體,由于季節(jié)氣候自然通風(fēng)受到限制。在門(mén)窗關(guān)閉的情況下,由門(mén)窗的縫隙向廚房?jī)?nèi)補(bǔ)風(fēng),補(bǔ)充的風(fēng)量很大。導(dǎo)致氣流組織不合理,使室內(nèi)環(huán)境受到污染甚至二次污染。 本文利用CFD——luent軟件對(duì)居住建筑廚房?jī)?nèi)設(shè)置單獨(dú)的補(bǔ)風(fēng)口,在不同的工況下進(jìn)行模擬研究。室內(nèi)空氣流動(dòng)為湍流,采用結(jié)構(gòu)型網(wǎng)格和非結(jié)構(gòu)型網(wǎng)格的結(jié)合應(yīng)用的網(wǎng)格劃分方法,污染物的設(shè)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(tái)上，灶臺(tái)四周(抽油煙機(jī)的正下方)增設(shè)條縫型補(bǔ)風(fēng)口對(duì)廚房進(jìn)行補(bǔ)風(fēng)。運(yùn)用CFD——luent模擬軟件對(duì)居住建筑廚房是否增設(shè)補(bǔ)風(fēng)口狀態(tài)下的氣流組織進(jìn)行模擬分析,得出在不同工況狀態(tài),廚房?jī)?nèi)的速度分布、溫度分布、污染物濃度分布的模擬態(tài)勢(shì),分析得到較理想的工況。運(yùn)用實(shí)驗(yàn)的方法,對(duì)某一用戶(hù)的廚房進(jìn)行測(cè)試,得到一些真實(shí)有效的數(shù)據(jù)，，分析推斷出各參數(shù)的變化趨勢(shì)。利用測(cè)得數(shù)據(jù)與模擬結(jié)果對(duì)比分析,望得到真實(shí)地、有效地、具有普遍性的結(jié)果。 在建筑中增設(shè)補(bǔ)風(fēng)風(fēng)道,在不占用太多建筑面積的前提下,廚房增設(shè)補(bǔ)風(fēng)口后,不但油煙機(jī)的排煙效果可以得到提升,而且公共排煙道可以從原設(shè)計(jì)的面積為0.24m2,減小至0.215m。。補(bǔ)風(fēng)風(fēng)道的面積為0.129m2。在建筑中只增加了0.104m2的補(bǔ)風(fēng)風(fēng)道。效果卻大大的不同。 經(jīng)研究發(fā)現(xiàn),在灶臺(tái)的四周設(shè)置補(bǔ)風(fēng)口,對(duì)廚房進(jìn)行補(bǔ)風(fēng),能提供在油煙機(jī)工作時(shí),廚房所需補(bǔ)充的風(fēng)量及時(shí)的補(bǔ)風(fēng),減少了門(mén)窗縫隙的滲透量,間接地減少內(nèi)耗,達(dá)到節(jié)能的目的。另外,從室外引進(jìn)新鮮空氣,提供了燃燒時(shí)所需要的氧氣,促進(jìn)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(kuò)散,提高油煙機(jī)的排煙效率。對(duì)廚房?jī)?nèi)污染物的防治和合理的氣流組織研究具有指導(dǎo)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(xué)位授予單位】：沈陽(yáng)建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TU834

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