本文關(guān)鍵詞： 地鐵活塞效應(yīng) 活塞風(fēng)井設(shè)置模式 地鐵車站空氣品質(zhì) 動網(wǎng)格計(jì)算方法 評價指標(biāo)　出處：《北京工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：對于非全封閉站臺門系統(tǒng)的地鐵,列車高速行駛產(chǎn)生的活塞風(fēng)直接影響地鐵區(qū)間隧道、車站站臺、站廳各區(qū)域空氣流動特性及其環(huán)境特性。如果能通過優(yōu)化地鐵區(qū)間隧道內(nèi)活塞風(fēng)井的設(shè)置模式,在列車駛?cè)胲囌緯r,將隧道內(nèi)廢熱(氣)在隧道中盡可能通過通風(fēng)豎井排走;在列車駛離車站時,將室外空氣盡可能通過地鐵車站地面出入口、人行通道、站廳、站臺的路徑吸入并分配到各個站內(nèi)區(qū)域,就有可能達(dá)到有效利用活塞效應(yīng)減少地鐵通風(fēng)空調(diào)系統(tǒng)能耗的目的。為此,本研究以有效利用地鐵活塞效應(yīng)改善地鐵車站空氣質(zhì)量并減少地鐵空調(diào)通風(fēng)系統(tǒng)能耗為設(shè)計(jì)理念,以北京非全封閉站臺門地鐵車站為研究對象,結(jié)合計(jì)算流體力學(xué)軟件動網(wǎng)格模型與組分運(yùn)輸模型的數(shù)值計(jì)算方法和現(xiàn)場實(shí)測方法,開展了關(guān)于地鐵車站區(qū)間隧道活塞風(fēng)井設(shè)置模式對地鐵系統(tǒng)空氣流動及環(huán)境特性的影響工作。定量分析了活塞風(fēng)井設(shè)置模式對地鐵車站有效利用地鐵活塞效應(yīng)改善其各區(qū)域空氣流動與質(zhì)交換的影響規(guī)律;并構(gòu)建了相應(yīng)基于地鐵活塞效應(yīng)下,地鐵車站通風(fēng)及空氣質(zhì)量的評價指標(biāo)體系(活塞風(fēng)井排風(fēng)率、地面出入口進(jìn)風(fēng)率、空氣稀釋率、等價新風(fēng)換氣次數(shù))。研究結(jié)果表明:(1)應(yīng)用動網(wǎng)格模型和組分運(yùn)輸模型可分析地鐵活塞風(fēng)的流動特性以及與地鐵車站空氣的質(zhì)交換狀況;(2)在地鐵區(qū)間隧道的車站站臺進(jìn)站端設(shè)置風(fēng)井的單活塞風(fēng)井設(shè)置模式,在一個發(fā)車間隔內(nèi)(250s),可從地鐵車站地面出入口引入室外空氣5126m3、占總引入風(fēng)量的52%,是雙活塞風(fēng)井模式的2倍;(3)單活塞風(fēng)井設(shè)置模式,不僅占用土地資源少,而且利用地鐵活塞效應(yīng)從地鐵車站地面出入口引入的室外空氣,可在車站通道、站廳、站臺等區(qū)域分別產(chǎn)生29.4次/h、32.0次/h、7.3次/h的等價新風(fēng)換氣次數(shù),稀釋了相應(yīng)區(qū)域空氣CO2濃度。研究結(jié)果可為地鐵活塞效應(yīng)有效利用、地鐵通風(fēng)豎井節(jié)能優(yōu)化設(shè)計(jì)提供方法參考。
[Abstract]:For the non closed platform door system of subway, train piston wind generated directly affect the subway tunnel, station, station hall of the regional air flow characteristics and environmental characteristics. If through the optimization of the piston air shaft in metro tunnel settings mode, into the train station, the tunnel waste heat (gas) in the tunnel as far as possible through the ventilation shaft discharge; in the train left the station, the outdoor air ground as far as possible through the subway station entrance, pedestrian channel, station hall, platform path inhalation and assigned to each station within the region, it is possible to achieve the effective use of piston effect to reduce the energy consumption of the air conditioning system of subway ventilation purposes. Therefore, the research on the effective use of the piston effect to improve air quality and reduce the energy consumption of subway station ventilation system of subway air conditioning design in Beijing, non closed platform door Subway station as the research object, method and field measurement method combined with numerical dynamic mesh model and component transport model of computational fluid dynamics software, to carry out the work on the influence of subway station tunnel piston wind shaft set mode to flow and environmental characteristics of subway system air. Quantitative analysis of the influence of the piston air shaft setting mode of subway station the effective use of piston effect in subway to improve the regional air flow and mass transfer; and constructed based on the piston effect in subway, subway station ventilation and air quality evaluation index system (piston air shaft ventilation rate, ground entrances into air rate, air dilution rate, the equivalent number of fresh air ventilation). The results show that: (1) the flow characteristics using the dynamic mesh model and group analysis of the piston wind can be divided into transportation model with the subway station and the air mass exchange condition; (2) in the subway The station platform tunnel in single piston air shaft end is provided in the air shaft setting mode, a departure interval (250s), from the subway station entrance into the outdoor air ground 5126m3, the total volume of the introduction of 52%, is 2 times the double piston air shaft mode; (3) single piston shaft setting mode, not only occupy less land resources, and the use of the subway piston effect from outdoor air to ground into the subway station entrance, at the station channel, station hall, platform and other areas have 29.4 /h, 32 /h, 7.3 times the number of /h is equivalent to the fresh air, the dilution of the corresponding regional air CO2 concentration. The results can be used for subway the piston effect of effective use of reference for the energy-saving optimization design of subway ventilation shaft.

【學(xué)位授予單位】：北京工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU962

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 郝娜;;地鐵隧道通風(fēng)系統(tǒng)活塞風(fēng)井布置探討[J];城市軌道交通研究;2012年08期

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本文編號：1538245