The selection principle of wet curtain size is to make the wet curtain system achieve good effect. Usually 10 cm thick or 15 cm thick fiber wet curtain is often used in flower production greenhouse. The 10 cm thick fiber wet curtain works well when the air velocity passing through the wet curtain is 76 M / min. 15 cm thick paper wet curtain requires air speed of 122 M / min.
In addition to the geographical location and climatic conditions, the distance between the wet curtain and the fan and the sensitivity of flower crops to temperature should also be considered. If the distance between the fan and the wet curtain is larger (generally more than 32 meters), it is recommended to use 15 cm thick wet curtain; if the cultivated flowers are sensitive to greenhouse temperature and have poor tolerance to high temperature, it is recommended to use 15 cm thick wet curtain. On the contrary, if the distance between the wet curtain and the fan is small or the flowers are less sensitive to temperature, a 10 cm thick wet curtain can be used.
From an economic point of view, the price of 10 cm thick wet curtain is lower than that of 15 cm thick wet curtain, which is only 2 / 3 of its price.
In addition, the larger the size of the air inlet, the better. Because the size of the air inlet is too small, it will increase the static pressure, thus greatly reducing the efficiency of the fan and increasing the power consumption.
