地下停车库通风设计要求都有哪些方面？

发布人：http://www.sftfgd.com   发布时间：2020-04-03 14:16:35

　　随着城市现代化建设的不断发展,城市土地越来越紧张,越来越多的私人汽车满足停车的需要,大型地下停车场,建设大型地下停车场,如何有效地解决地下车库的通风和排烟控制问题是一个重要的问题在地下停车场的设计,本文总结了大型地下停车场(大于2000)在设计中存在的一些问题。

　　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).

　　地下车库排风量计算

　　Calculation of exhaust air volume of underground garage

　　CO.卫生标准[7]的更大允许浓度为30 mg/ m3，但在操作时间较短时可以放宽。1小时内运行时间为50mg / m3;半小时100 mg/ m3;20分钟是200毫克/立方米。但在上述条件下重复操作时，两次操作间隔应大于2小时。在计算中，数值变化很大，有的取C=100 mg/ m3;有的服用C=100PPM (125 mg/ m3)，有的服用200 mg/ m3。进口风中CO的浓度。有的值为C0=2.5~3.5 mg/ m3，有的值为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。排烟计算

　　II. Smoke exhaust calculation

　　根据《汽车库、修车库、停车场设计防火规范》计算的烟尘量应按通风次数不少于6次/小时计算，一般取6次/小时。

　　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.

　　通风配风设计

　　Ventilation and air distribution design

　　根据5.3.11条为采暖通风和空调设计代码,当分散气体的密度比空气重的显热建筑并不足以形成一个稳定的上升气流和沉积在较低的地区,建议从低排放总量的2/3排气面积和排气上总面积的1/3。因此排气口的布置应满足排气口下部面积为排气口上部面积的2倍，且排气口位置应均匀，尽量靠近汽车后部。

　　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.

　　排烟气流组织设计

　　Design of smoke exhaust and air distribution

　　(1)根据两者中更大的计算系统风道尺寸。

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

　　(2)根据地下停车库的风量计算，换气次数一般为5~7次/h，排烟量一般为6次/h。笔者认为，只要根据风量和排烟量，两者中更大的可以选择单速风机，使用双速风机意义不大，有时甚不能满足通风要求。

　　(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)根据通风体积的1/3建立上层通风,通风体积建立低2/3的发泄,然后根据烟雾排放体积检查上层通风是否满足烟排放要求,否则调整的面积上发泄,所有的排气阀都是装备,为了控制的上部和下部区域排气体积。而下风口则装有电动葫芦，在发生火灾时，即可就地或远程启闭风口，满足排烟要求。

　　(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.

　　以上就是济南黑白铁加工对车库管道的设计要求的详细介绍，想要了解更多请点进官网http://www.sftfgd.com

　　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.sftfgd.com