About ventilation system Ventilation pipe construction Knowledge points of
Ventilation engineering Construction ventilation is a kind of building environment control technology to control the spread and harm of air pollutants and achieve indoor and outdoor air environment quality assurance by means of ventilation dilution or ventilation elimination. Ventilation system is a complete set of devices to realize the function of ventilation, including air inlet, air outlet, air supply duct, fan, cooling and heating, filter, control system and other auxiliary equipment.
The ventilation method improves the air environment of the workshop. In local locations or the whole workshop, the dirty air that does not meet the health standards is discharged to the outside, which is called exhaust air. The fresh air or purified air that meets the sanitary requirements is sent into the room, which is called air intake. If only exhaust or supply air to local places, that is, local ventilation; If the whole workshop is ventilated or supplied with air, it is fully ventilated. Generally, ventilation can be divided into local ventilation, general ventilation and emergency ventilation according to the different scope of action of the ventilation system. The local ventilation system can be divided into two categories: local air inlet and local air exhaust. Both of them make use of local air flow to prevent local work sites from being polluted by harmful substances and create a good air environment.
The characteristics of the local ventilation system: local exhaust. In the local places where harmful substances are produced in a concentrated way, a catch device is set to discharge the harmful substances, so as to control the spread of harmful substances indoors. This ventilation method is called local exhaust. This is an effective ventilation method for poison prevention and dust removal. Another feature is local air supply, which supplies air to local work sites, creating a good air environment in local areas. For the workshop with large area and few operators, it is difficult, uneconomical and unnecessary to improve the air environment of the whole workshop by means of comprehensive ventilation.
The article comes from the network, if you have any questions, please contact us!
