如果你想实现
济南通风管道的多方面的通风，你可以使用机械通风或自然通风。根据系统不同，综合通风可分为综合送风、综合排风和综合送风排气三类。根据不同的制的不同，综合通风可分为稀释通风和置换通风。那么通风管道的机械通风原理是什么呢？让我们来看看通风管道。
If you want to achieve multiple ventilation of Jinan ventilation duct, you can use mechanical ventilation or natural ventilation. According to different systems, comprehensive ventilation can be divided into three categories: comprehensive air supply, comprehensive exhaust and comprehensive air supply and exhaust. According to different systems, comprehensive ventilation can be divided into dilution ventilation and displacement ventilation. So what is the mechanical ventilation principle of ventilation duct? Let's look at the ventilation duct.
1稀释通风
1 Dilution ventilation
稀释通风又称混合通风，即将低于室内污染物浓度的空气与室内空气混合，降低室内污染物浓度，达到卫生标准。
Dilution ventilation, also known as mixed ventilation, means that the air below the concentration of indoor pollutants is mixed with indoor air to reduce the concentration of indoor pollutants and meet the health standards.
2置换通风
2 Displacement ventilation
在更换通风系统中，新鲜冷空气以非常低的速度从房间底部输送，送风温差仅为2-4Y。由于密度高，新鲜空气像水一样扩散到整个房间的底部。热源引起的热对流气流使室内产生垂直的温度禅，气流缓慢上升，从工作区域分离，将余热和污染物推到房间顶部。天花板或房间顶部的排气口直接排出。
In the replacement ventilation system, fresh and cold air is transported from the bottom of the room at a very low speed, and the temperature difference of the air supply is only 2-4Y. Due to the high density, fresh air diffuses to the bottom of the whole room like water. The heat convection air flow caused by the heat source causes a vertical temperature rise in the room. The air flow slowly rises and separates from the working area, pushing the waste heat and pollutants to the top of the room. The exhaust from the ceiling or the top of the room is directly discharged.
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室内空气几乎像活塞一样流动，使污染物随空气流动从房间顶部排出，工作区基本进入空气，即工作区污染物浓度约等于空气浓度，是替代通风与传统稀释综合通风的Z大区别。在通风管道中，替代通风的通风效果明显优于稀释通风。
The indoor air flows almost like a piston, so that the pollutants are discharged from the top of the room with the air flow, and the working area basically enters the air, that is, the concentration of pollutants in the working area is about equal to the air concentration, which is the Z big difference between alternative ventilation and traditional dilution comprehensive ventilation. In the ventilation duct, the ventilation effect of alternative ventilation is obviously better than that of dilution ventilation.
3局部通风
3 Local ventilation
局部通风是利用局部气流，使局部位置不受有害物质污染，造成良好的空气环境。
Local ventilation is the use of local air flow to prevent local locations from being polluted by harmful substances and create a good air environment.
局部通风系统分为局部送风和局部排风两类。局部排风是将污染物就地收集。净化后排放到室外。局部送风处理。符合要求的空气送至当地工作场所，保证当地空气条件。当地通风作为保证工作和生活环境空气质量的一种方式应优先考虑防止室内环境污染的技术措施。
The local ventilation system is divided into local air supply and local exhaust. Local exhaust is to collect pollutants on site. After purification, put it outside. Local air supply treatment. The qualified air shall be sent to the local workplace to ensure the local air conditions. As a way to ensure the air quality of the working and living environment, local ventilation should give priority to technical measures to prevent indoor environmental pollution.
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