Many users of greenhouse intelligent ventilation fans are unaware of their negative pressure ventilation principle. So, what is the negative pressure ventilation principle, and what are its advantages and functions? Let Qingzhou Qizhou Greenhouse Engineering Co., Ltd. introduce it to you.

The smart ventilation fans installed on the walls of greenhouse greenhouses extract some of the air inside, causing the indoor air pressure to instantaneously become lower than atmospheric pressure, or lower than normal pressure. At this time, there is an intake vent opposite the smart ventilation fan, and the outside air enters the space automatically under the atmospheric pressure. Therefore, a directional and stable airflow band is formed within the space. This type of ventilation is commonly referred to as negative pressure ventilation.

The negative pressure ventilation is characterized by directional and stable airflow, which is connected to the outside rather than circulating within the space. If there is a cooling water curtain installed opposite the smart ventilation fan in the greenhouse, then as the outside air passes through the damp water curtain, it undergoes heat exchange with the water, resulting in a significant drop in temperature and an effective cooling effect on the space.