某居住小區(qū)地下車庫(kù)自然通風(fēng)條件下氣體污染物特性研究
發(fā)布時(shí)間：2018-07-16 08:28
【摘要】：近年來(lái),隨著私人轎車保有量的快速增長(zhǎng)以及居住小區(qū)高層住宅的大量興建,地下車庫(kù)正成為居住小區(qū)停車場(chǎng)的重要形式,其中的空氣環(huán)境問(wèn)題也引起了廣泛的關(guān)注。本文選取哈爾濱市某小區(qū)地下車庫(kù)作為典型車庫(kù),以現(xiàn)場(chǎng)測(cè)試為基礎(chǔ),對(duì)自然通風(fēng)條件下CO、TVOC、HCHO及NH3等氣體污染物特性進(jìn)行研究。首先,本文對(duì)地下車庫(kù)的通風(fēng)量、溫濕度等條件進(jìn)行了測(cè)試,對(duì)出、入車流量進(jìn)行了統(tǒng)計(jì),并對(duì)其變化規(guī)律進(jìn)行了分析總結(jié)。選取中心測(cè)點(diǎn)作為CO、TVOC、HCHO及NH3濃度變化的測(cè)點(diǎn),五點(diǎn)法選取作為水平分布測(cè)點(diǎn),對(duì)中心測(cè)點(diǎn)的0.3m、1.5m、2.5m高度進(jìn)行垂直分布測(cè)試。其次,本文給出了污染物濃度的時(shí)空分布特性。討論了污染物濃度在水平方向以及垂直方向上的分布特性,結(jié)果表明出車集中側(cè)及排放側(cè)污染物濃度高,而垂直方向上不存在分層現(xiàn)象。分析了不同污染物的日變化特性及周期間變化特性,論述了工作日與休息日日變化規(guī)律的周期間相似性,指出冬季工況下CO、TVOC超標(biāo)嚴(yán)重。通過(guò)相關(guān)系數(shù)分析得到污染物間相關(guān)性的周期間變化,指出冬季工況下CO、TVOC及HCHO間線性擬合程度較高,并計(jì)算得到當(dāng)CO濃度達(dá)到25ppm時(shí),TVOC濃度已達(dá)到1.0ppm以上。采用偏相關(guān)系數(shù)法以及灰色關(guān)聯(lián)度法,對(duì)各個(gè)周期以及全周期進(jìn)行了影響因素分析,其中CO、TVOC、HCHO濃度變化最主要的影響因素為出車流量。最后,本文以通風(fēng)稀釋方程為基礎(chǔ),建立了污染物濃度計(jì)算模型,確定了模型的適用條件,給出了擬合參數(shù)的物理意義。提出換氣次數(shù)需求的概念,說(shuō)明所選典型車庫(kù)自然通風(fēng)能夠滿足CO濃度限值要求,并得到使CO濃度滿足要求的自然通風(fēng)控制策略。
[Abstract]:In recent years, with the rapid growth of private car ownership and the construction of a large number of high-rise residential buildings, underground garage is becoming an important form of residential parking area, among which the air environment problem has attracted extensive attention. In this paper, the underground garage of a small district in Harbin is selected as the typical garage. Based on the field test, the characteristics of COTVOCU HCHO and NH3 under natural ventilation are studied. First of all, this paper tests the ventilation, temperature and humidity of underground garage, and makes statistics on the flow rate and analyzes the law of change. The center measuring point is chosen as the measuring point of HCHO and NH 3 concentration change of COTVOCU, and the five point method is selected as horizontal distribution point. The vertical distribution of the center measuring point is measured at a height of 0.3 m or 1.5 m ~ (2.5 m). Secondly, the temporal and spatial distribution characteristics of pollutant concentration are given. The distribution characteristics of pollutant concentration in horizontal and vertical directions are discussed. The results show that the concentration of pollutants in the concentrated side and discharge side of the vehicle is high, but there is no stratification in the vertical direction. This paper analyzes the diurnal variation characteristics of different pollutants and the variation characteristics during the week, discusses the similarity of the variation law between the weekday and the rest day, and points out that the COTV-OC exceeds the standard seriously under the winter working condition. The variation of correlation between pollutants during the week was obtained by correlation coefficient analysis. It was pointed out that the degree of linear fitting between COTOC and HCHO was higher under winter conditions, and it was calculated that when CO concentration reached 25ppm, the concentration of TOC was above 1.0ppm. The influence factors of each cycle and the whole period were analyzed by using the partial correlation coefficient method and the grey correlation degree method. The main influence factor of HCHO concentration change of COTVOCU was the traffic flow. Finally, based on the ventilation dilution equation, the model of pollutant concentration calculation is established, the applicable conditions of the model are determined, and the physical meaning of fitting parameters is given. The concept of air exchange times is put forward, which shows that the natural ventilation of the typical garage can meet the limit of CO concentration, and the natural ventilation control strategy is obtained to satisfy the requirement of CO concentration.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU962;X51
本文編號(hào)：2125825
[Abstract]:In recent years, with the rapid growth of private car ownership and the construction of a large number of high-rise residential buildings, underground garage is becoming an important form of residential parking area, among which the air environment problem has attracted extensive attention. In this paper, the underground garage of a small district in Harbin is selected as the typical garage. Based on the field test, the characteristics of COTVOCU HCHO and NH3 under natural ventilation are studied. First of all, this paper tests the ventilation, temperature and humidity of underground garage, and makes statistics on the flow rate and analyzes the law of change. The center measuring point is chosen as the measuring point of HCHO and NH 3 concentration change of COTVOCU, and the five point method is selected as horizontal distribution point. The vertical distribution of the center measuring point is measured at a height of 0.3 m or 1.5 m ~ (2.5 m). Secondly, the temporal and spatial distribution characteristics of pollutant concentration are given. The distribution characteristics of pollutant concentration in horizontal and vertical directions are discussed. The results show that the concentration of pollutants in the concentrated side and discharge side of the vehicle is high, but there is no stratification in the vertical direction. This paper analyzes the diurnal variation characteristics of different pollutants and the variation characteristics during the week, discusses the similarity of the variation law between the weekday and the rest day, and points out that the COTV-OC exceeds the standard seriously under the winter working condition. The variation of correlation between pollutants during the week was obtained by correlation coefficient analysis. It was pointed out that the degree of linear fitting between COTOC and HCHO was higher under winter conditions, and it was calculated that when CO concentration reached 25ppm, the concentration of TOC was above 1.0ppm. The influence factors of each cycle and the whole period were analyzed by using the partial correlation coefficient method and the grey correlation degree method. The main influence factor of HCHO concentration change of COTVOCU was the traffic flow. Finally, based on the ventilation dilution equation, the model of pollutant concentration calculation is established, the applicable conditions of the model are determined, and the physical meaning of fitting parameters is given. The concept of air exchange times is put forward, which shows that the natural ventilation of the typical garage can meet the limit of CO concentration, and the natural ventilation control strategy is obtained to satisfy the requirement of CO concentration.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU962;X51
【參考文獻(xiàn)】
相關(guān)期刊論文 前4條
1 鄂世業(yè);灰色關(guān)聯(lián)分析在地下水動(dòng)態(tài)分析中的應(yīng)用[J];北京水利;1996年02期
2 王月志;朱林;劉曄;葛鳳華;;北方城市地下停車庫(kù)通風(fēng)運(yùn)行現(xiàn)狀分析[J];吉林建筑工程學(xué)院學(xué)報(bào);2008年03期
3 張秦賡;牛魯燕;周永剛;;新形勢(shì)下對(duì)我國(guó)汽車尾氣污染的思考[J];環(huán)境科技;2011年S2期
4 范衛(wèi),王法弟,賈曉東,金復(fù)生,金錫鵬;近十年國(guó)內(nèi)有關(guān)甲醛的環(huán)境與職業(yè)危害調(diào)查研究[J];環(huán)境與職業(yè)醫(yī)學(xué);2004年02期
相關(guān)碩士學(xué)位論文 前2條
1 蘇曉峰;地下停車場(chǎng)污染物擴(kuò)散數(shù)值模擬與通風(fēng)系統(tǒng)優(yōu)化[D];重慶大學(xué);2012年
2 郝寅龍;嚴(yán)寒地區(qū)居民區(qū)地下停車場(chǎng)自然通風(fēng)可行性研究[D];哈爾濱工業(yè)大學(xué);2012年
，本文編號(hào)：2125825
本文鏈接：http://sikaile.net/kejilunwen/huanjinggongchenglunwen/2125825.html
最近更新
教材專著
