通风管道的两种通风方式是什么？

发布人：http://www.sftfgd.com   发布时间：2022-07-20 13:52:15

通风管道的在建筑中起到通风换气，保持室内空气新鲜，保持室内湿度的一种必要装置，下面是小编介绍的两种通风方式，一起来看一下它们都有哪些特点。

Ventilation duct is a necessary device for ventilation in buildings to keep indoor air fresh and indoor humidity. The following are the two ventilation methods . Let's take a look at their characteristics.

稀释通风：稀释通风又称混合通风，即送人比室内污染物浓度低的空气与室内空气混合，以此降低室内污染物的浓度，达到卫生标难。

Dilution ventilation: dilution ventilation is also called mixed ventilation, which means that the air with lower concentration of indoor pollutants is sent to mix with indoor air, so as to reduce the concentration of indoor pollutants and meet the health standard.

置换通风：在置换通风系统中，新鲜冷空气由房间底部以很低的速度(o．03—o．59t／s)送人，送风温差仅为2—4Y。送入的新鲜空气因密度大而像水一样弥漫整个房间的底部，热源引起的热对流气流使室内产生垂直的温度禅度，气流缓慢上升，脱离工作区，将余热和污染物推向房间顶部，由设在顶棚上或房间顶部的排风口直接排出。

Displacement ventilation: in the displacement ventilation system, fresh cold air is sent from the bottom of the room at a very low speed (o.03-o.59t / s), and the temperature difference of the air supply is only 2-4y. The incoming fresh air is as dense as water at the bottom of the whole room. The hot convection air flow caused by the heat source makes the room produce vertical temperature Zen. The air flow rises slowly and leaves the working area, pushing the waste heat and pollutants to the top of the room, which is directly discharged by the exhaust outlet set on the ceiling or on the top of the room.

室内空气近似活塞状流动。使污染物随空气流动从房间顶部排出，工作区基本处于送入空气中，即工作区污染物浓度约等于送人空气的浓度，这是置换通风与传统的稀释全方面通风的区别。

Indoor air flows like a piston. The pollutants are discharged from the top of the room with the air flow, and the working area is basically in the incoming air, that is, the pollutant concentration in the working area is about equal to the concentration of the incoming air, which is the difference between displacement ventilation and traditional dilution all-round ventilation.

两种通风方式有略微的差异，通风排污效果相比之下，置换通风效果要好一点，我们要根据室内的实际通风情况进行设置。

There are slight differences between the two ventilation methods. Compared with the effect of ventilation and sewage discharge, the effect of displacement ventilation is better. We should set it according to the actual indoor ventilation.