地下停車庫通風設計要求都有哪些方面？

發布人：http://www.bnlfans.net   發布時間：2020-04-03 14:16:35

　　隨著城市現代化建設的不斷發展,城市土地越來越緊張,越來越多的私人汽車滿足停車的需要,大型地下停車場,建設大型地下停車場,如何有效地解決地下車庫的通風和排煙控制問題是一個重要的問題在地下停車場的設計,本文總結了大型地下停車場(大于2000)在設計中存在的一些問題。

　　With the continuous development of urban modernization, urban land is becoming more and more tense, more and more private cars meet the needs of parking, large-scale underground parking lot, construction of large-scale underground parking lot, how to effectively solve the problem of ventilation and smoke control of underground parking lot is an important problem in the design of underground parking lot, This paper summarizes some problems existing in the design of large-scale underground parking lot (more than 2000 square meters).

　　地下車庫排風量計算

　　Calculation of exhaust air volume of underground garage

　　CO.衛生標準[7]的更大允許濃度為30 mg/ m3，但在操作時間較短時可以放寬。1小時內運行時間為50mg / m3;半小時100 mg/ m3;20分鐘是200毫克/立方米。但在上述條件下重復操作時，兩次操作間隔應大于2小時。在計算中，數值變化很大，有的取C=100 mg/ m3;有的服用C=100PPM (125 mg/ m3)，有的服用200 mg/ m3。進口風中CO的濃度。有的值為C0=2.5~3.5 mg/ m3，有的值為C0=3PPM(3.75 mg/ m3)。有些是C0=100PPM (125 mg/ m3)。

　　The maximum allowable concentration of Co. in Chinese health standard [7] is 30 mg / m3, but it can be relaxed in a short time. The operation time within one hour is 50mg / m3; half an hour is 100mg / m3; 20 minutes is 200mg / m3. However, in case of repeated operation under the above conditions, the interval between the two operations shall be greater than 2 hours. In the calculation, the values vary greatly, some take C = 100 mg / m3, some take C = 100 ppm (125 mg / m3), some take 200 mg / m3. The concentration of CO in the inlet air. Some values are C0 = 2.5 ~ 3.5 mg / m3, while others are C0 = 3ppm (3.75 mg / m3). Some are C0 = 100 ppm (125 mg / m3).

　　二。排煙計算

　　II. Smoke exhaust calculation

　　根據《汽車庫、修車庫、停車場設計防火規范》計算的煙塵量應按通風次數不少于6次/小時計算，一般取6次/小時。

　　According to the code for fire protection design of garage, repair garage and parking lot, the amount of smoke and dust shall be calculated according to the ventilation times no less than 6 times / hour, generally 6 times / hour.

　　通風配風設計

　　Ventilation and air distribution design

　　根據5.3.11條為采暖通風和空調設計代碼,當分散氣體的密度比空氣重的顯熱建筑并不足以形成一個穩定的上升氣流和沉積在較低的地區,建議從低排放總量的2/3排氣面積和排氣上總面積的1/3。因此排氣口的布置應滿足排氣口下部面積為排氣口上部面積的2倍，且排氣口位置應均勻，盡量靠近汽車后部。

　　According to the design code for heating, ventilation and air conditioning in 5.3.11, when the sensible building with the density of the dispersed gas heavier than the air is not enough to form a stable updraft and deposit in the lower area, it is recommended to exhaust 2 / 3 of the total amount of low emission and 1 / 3 of the total area of exhaust. Therefore, the layout of the exhaust port should meet the requirement that the area of the lower part of the exhaust port is twice of the area of the upper part of the exhaust port, and the position of the exhaust port should be uniform, as close to the rear of the car as possible.

　　排煙氣流組織設計

　　Design of smoke exhaust and air distribution

　　(1)根據兩者中更大的計算系統風道尺寸。

　　(1) Calculate the system air duct size based on the largest of the two.

　　(2)根據地下停車庫的風量計算，換氣次數一般為5~7次/h，排煙量一般為6次/h。筆者認為，只要根據風量和排煙量，兩者中更大的可以選擇單速風機，使用雙速風機意義不大，有時甚不能滿足通風要求。

　　(2) According to the air volume calculation of underground parking garage, the air change frequency is generally 5-7 times / h, and the smoke exhaust volume is generally 6 times / h. The author thinks that the single speed fan can be selected as long as it is based on the air volume and smoke exhaust volume, and the use of two speed fan is of little significance, sometimes it can not even meet the ventilation requirements.

　　(3)根據通風體積的1/3建立上層通風,通風體積建立低2/3的發泄,然后根據煙霧排放體積檢查上層通風是否滿足煙排放要求,否則調整的面積上發泄,所有的排氣閥都是裝備,為了控制的上部和下部區域排氣體積。而下風口則裝有電動葫蘆，在發生火災時，即可就地或遠程啟閉風口，滿足排煙要求。

　　(3) According to 1 / 3 of the ventilation volume, the upper ventilation is established, and the ventilation volume is 2 / 3 lower. Then, check whether the upper ventilation meets the smoke emission requirements according to the smoke emission volume. Otherwise, vent on the adjusted area, all the exhaust valves are equipped to control the exhaust volume of the upper and lower areas. In case of fire, the air outlet can be opened and closed locally or remotely to meet the smoke exhaust requirements.

　　以上就是濟南黑白鐵加工對車庫管道的設計要求的詳細介紹，想要了解更多請點進官網http://www.bnlfans.net

　　The above is a detailed introduction to the design requirements of Jinan black and white iron processing for garage pipes. For more information, please click http://www.bnlfans.net