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Ventilation
Ventilating is the process of changing the air in the room was contaminated
Ventilating is the process of changing the air in the room was new air pollution outdoors, the purpose of ventilation is: Discharge of toxic gas, excess heat and excess moisture outside, provide the necessary oxygen forthe human body
Ventilation has two forms of natural ventilation and forced ventilation:
+ Natural ventilation is the phenomenon of exchange of indoor and outdoor air in the column pressure difference
+ Forced draft ventilation process by external forces ie using ventilation fans
