車庫(kù)排煙口與排風(fēng)口的設(shè)計(jì)

發(fā)布人：http://www.hkcts.com.cn   發(fā)布時(shí)間：2017-05-25 16:33:52

由于煙氣密度比常溫空氣密度小，所以排煙口布置在車庫(kù)上方較合適。原因有四點(diǎn)

Because the smoke density is lower than the normal temperature air density, the smoke exhaust port is arranged above the garage. There are four reasons

1、汽車有害物的大部分，其中包括，一氧化碳的98%-99%，碳?xì)浠衔锏?5%-65%和氮氧化物的98%-99%都是從尾氣散發(fā)出來(lái)的，而尾氣的排放溫度高達(dá)500-550攝氏度，高溫的排風(fēng)氣流產(chǎn)生很大的浮力，很難設(shè)想尾氣會(huì)帶留在車庫(kù)下部。

1, the car most of the harmful substances, including carbon monoxide, 98%-99%, hydrocarbons and nitrogen oxides 55%-65% 98%-99% is emitted from the exhaust, and the exhaust temperature up to 500-550 degrees Celsius, the high temperature exhaust airflow has great buoyancy, it is difficult to imagine in the garage with lower exhaust.

2、還有部分污染物從曲軸箱排除，有10%-20%d 碳?xì)浠衔飶娜加拖到y(tǒng)排出，這兩部分排放物雖然溫度不像尾氣那么高，且氮氧化物也比空氣密度大些，但這些有害是在發(fā)動(dòng)機(jī)工作時(shí)才排放的，而發(fā)動(dòng)機(jī)工作時(shí)，汽車處于行駛狀態(tài)，車庫(kù)的氣流就隨著車子進(jìn)進(jìn)出出處于強(qiáng)烈擾動(dòng)與混合狀態(tài)，尾氣也處于汽車后部的渦流之中，所以排放物并不會(huì)沉積于車庫(kù)下方，而那些停穩(wěn)放好的汽車，其發(fā)動(dòng)機(jī)已經(jīng)關(guān)閉，沒(méi)有什么有害物排出了。

2, there are some pollutant removal from the crankcase, 10%-20%d hydrocarbons discharged from the fuel system, the two part temperature exhaust emissions although not so high, and nitrogen oxides than air density is bigger, but these are only harmful emissions during operation of the engine, and the engine when the car is in the running state. The air of the car into the garage and originated in the strong disturbance and mixed state, also in the vortex on the back of a car exhaust emissions, so not deposited in the garage below, while those who stop on a good car, the engine has been closed, not what the discharge of harmful substance.

3、有數(shù)據(jù)證明，用通風(fēng)換氣的辦法將汽車排出的CO稀釋到容許濃度時(shí) 有害物遠(yuǎn)遠(yuǎn)低于他們相應(yīng)的允許濃度。

3. Data show that when ventilation is used to dilute the CO emitted to the permissible concentration, the harmful substances are much lower than their corresponding allowable concentrations.

4、高層建筑的地下車庫(kù)，一般只停放轎車、多是面包車設(shè)計(jì)的，車庫(kù)只有2.2-2.8M左右，將通風(fēng)管道口布置在車庫(kù)上部，則系統(tǒng)既能滿足火災(zāi)時(shí)的排煙要求，也能滿足日常排風(fēng)的要求。

4, high-rise building underground garage, parking cars, only is the largest van design of the garage is only about 2.2-2.8M, the ventilation pipe opening is arranged on the upper garage, the system can meet the requirements of fire smoke, can meet the daily requirements of air exhaust.