来源： 日期：2020-10-21 发布人：gaoshitongferng
Ventilation is a kind of ventilation equipment, which uses mechanical or natural methods to send enough fresh air to the indoor space, while exhausting the dirty air which does not meet the sanitary requirements, so that the indoor air can meet the sanitary requirements and the needs of the production process. The ventilation pipe equipment has a very wide range of use.
Nowadays, the ventilation facilities in buildings are called ventilation pipe equipment. Ventilation duct equipment is divided into exhaust fan, ventilator, fan, industrial and household two kinds. And the fan is divided into high, medium, low, negative pressure and so on.
Jinan ventilation duct
1. Dilution ventilation
Dilution ventilation, also known as mixed ventilation, is to send air with lower concentration than indoor pollutants to mix with indoor air, so as to reduce the concentration of indoor pollutants and meet the health standards.
2. Displacement ventilation
In the displacement ventilation system, fresh cold air is fed from the bottom of the room at a very low speed, and the temperature difference of the air supply is only 2-4y. Because of the high density of the fresh air, it permeates the bottom of the room like water. The heat convection air flow caused by the heat source makes the room produce a vertical temperature Zen degree. The air flow rises slowly and leaves the working area. The waste heat and pollutants are pushed to the top of the room, and then directly discharged by the air outlet set on the ceiling or the top of the room.
Jinan ventilation duct manufacturers found that the indoor air flow is almost piston like, which makes the pollutants discharged from the top of the room with the air flow. The working area is basically in the air, that is, the concentration of pollutants in the working area is approximately equal to the concentration of the air sent to the air, which is a greater difference between displacement ventilation and traditional dilution full face ventilation. It is obvious that displacement ventilation is better than dilution ventilation in ventilation duct.
3. Local ventilation
Local ventilation is the use of local air flow, so that local sites are not polluted by harmful substances, resulting in a good air environment.
Local ventilation system can be divided into local air supply and local exhaust. Local exhaust is to collect and purify pollutants on the spot and then discharge them to the outdoor. Local air supply is to send the treated and qualified air to the local working place to ensure the air condition in the local area. As a technical measure to ensure the air quality of working and living environment and prevent indoor environmental pollution, local ventilation should be given priority. 上一篇：山东通风管道的安装质量该如何把控