Nowadays, ventilation pipes are installed in workshops, office buildings and other buildings. The function of ventilation duct is to exhaust air and dust, which is generally divided into comprehensive exhaust and local exhaust. Today, Tianjiao HVAC explains the basis of ventilation duct design from two aspects: overall ventilation and partial ventilation.
Full ventilation is usually installed on the external wall with a certain number of exhaust fans, which can form negative pressure in the room. When designing the ventilation duct, it is necessary to take into account the fresh air entering the room through doors and windows, so that the whole workshop can be ventilated and ventilated, and the concentration of harmful gases can be diluted to meet the requirements of health standards. The small edition of ventilation duct installation reminds us that when vapors of several solvents or several irritating gases are emitted into the air at the same time, the ventilation volume should be calculated according to the sum of the air volume needed to dilute to the maximum allowable concentration respectively.
When designing local exhaust ventilation pipeline, harmful gases, vapors and dust are dispersed in the workshop. Local exhaust system is mainly used to directly discharge outdoors from the source. Local exhaust system consists of local exhaust hood, ventilation duct, ventilator, dust or harmful gas purification equipment and exhaust device. When the harmful gas, vapor or dust produced is too large to be processed in the exhaust cabinet, one side of the exhaust hood can be open, the other side of the exhaust hood can be closed, or the other side of the exhaust hood can not be closed, or the upper exhaust umbrella hood, there are various forms of unilateral exhaust, bilateral exhaust and Blow-Suction slot side exhaust.
For more information on the processing of ventilation pipes in Shandong, please click on our official website: http://jzbxxh.com./