本文選題：住宅 + 室內(nèi)空氣污染�。� 參考：《青島理工大學(xué)》2009年碩士論文

【摘要】：人的一生至少有80%以上的時間實在室內(nèi)度過的,室內(nèi)環(huán)境對人們的身體健康及工作效率有極大影響。目前城市地區(qū)普遍存在較為嚴重的室內(nèi)空氣污染問題。自然通風(fēng)方法驅(qū)除室內(nèi)空氣污染物效果好、能耗低,正日益受到重視。數(shù)值模擬方法尤其是大渦模擬省時省力,可對自然通風(fēng)過程進行較為準確的模擬,已被用于對自然通風(fēng)的研究。目前尚缺乏對整套住宅整體自然通風(fēng)的大渦模擬研究,此類過程中污染物排放的具體規(guī)律尚未被完全認識。 本文采用大渦模擬方法針對整套住宅,對其在不同條件下的自然通風(fēng)及室內(nèi)空氣污染物排放過程進行了三維大渦數(shù)值模擬,得到了詳細的流場的污染物濃度場數(shù)據(jù)。對計算結(jié)果的分析表明:自然通風(fēng)時流場中的大尺度渦是污染物積存的主要區(qū)域;不同的房間布置產(chǎn)生不同的流場,從而影響換氣效果,多開口房間污染物稀釋速度為單開口房間的2—10倍,將單開口房間變?yōu)槎嚅_口房問,減小、破壞多開口房間回流區(qū)可有效提高換氣效果;一般情況下污染物排放速度與外界風(fēng)速成正比;污染物排放主要受對流作用影響,擴散作用影響可以忽略,因而不同的污染物具有極為相似的排放規(guī)律。這些結(jié)論對于自然通風(fēng)研究有一定參考價值,可用于指導(dǎo)實際建筑通風(fēng)方式的設(shè)計工作。
[Abstract]:At least 80% of the time is spent indoors, and the indoor environment has a great impact on people's health and work efficiency. At present, there are serious indoor air pollution problems in urban areas. Natural ventilation method has been paid more and more attention because of its good effect and low energy consumption. The numerical simulation method, especially the large eddy simulation method, saves time and labor, and can simulate the natural ventilation process accurately. It has been used in the study of natural ventilation. At present, there is no large eddy simulation study on the whole house natural ventilation, and the specific rules of pollutant emission in this process have not been fully understood. In this paper, the large eddy simulation method is used to simulate the natural ventilation and indoor air pollutant emission process under different conditions, and the detailed data of pollutant concentration field in the flow field are obtained. The analysis of the calculated results shows that the large scale vortex in the flow field is the main area of pollutant accumulation in natural ventilation, and that different room arrangement produces different flow field, which affects the effect of air exchange. The dilution rate of pollutants in the multi-opening room is 2-10 times of that in the single-opening room, and the ventilation effect can be improved effectively by changing the single-opening room into a multi-open room, reducing the volume of pollutants and destroying the backflow zone of the multi-opening room. In general, the pollutant emission velocity is proportional to the external wind speed, and the pollutant discharge is mainly affected by convection, but the diffusion effect can be neglected, so different pollutants have very similar emission law. These conclusions have some reference value for the study of natural ventilation and can be used to guide the design of ventilation mode in practical buildings.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2009
【分類號】：X51

【參考文獻】

相關(guān)期刊論文 前6條

1 陳中穎,余剛,張彭義,蔣展鵬,徐湛坤;碳黑改性TiO_2薄膜光催化劑的研制[J];環(huán)境污染與防治;2002年03期

2 張國強,余躍濱,韓杰;建筑裝飾材料污染物散發(fā)影響因素研究[J];湖南大學(xué)學(xué)報(自然科學(xué)版);2004年06期

3 郝俊紅,鄢道華,劉建龍,韓杰,張國強;住宅室內(nèi)空氣污染調(diào)查與防治[J];建筑熱能通風(fēng)空調(diào);2004年01期

4 成通寶,徐瑛,江億,張寅平;建筑裝飾材料揮發(fā)性有機物的散發(fā)模型[J];暖通空調(diào);2003年04期

5 陳洪偉,李攻科,李核,張展霞,王伯光,李拓,羅海鯤;大氣環(huán)境中揮發(fā)性有機化合物的測定[J];色譜;2001年06期

6 黃廷磊,鄭剛,王乃寧;室內(nèi)空氣中顆粒狀污染物的計數(shù)技術(shù)[J];應(yīng)用光學(xué);2000年02期

，

本文編號：1904439