Damp Curtain

In the hot weather, the thermal conduction and heat radiation can make the temperature in the greenhouse that hasn't been cooled down10-20degree higher than the external temperature. This will result the productive activity can't be carried through normally. So, adopting effective cooling measure id the unique approach to obtain high yield, high efficiency and stabilization in room temperature production. The long time experience can testify that even in the most hot weather, the "dampcurtain-ventilator" system installed well call all the same controls the temperature in greenhouse around 30degree. This will decrease the loss of production caused by hot weather to minimum. The cooling proceed of the damp curtain is finished in its core part Yanfeng paper pad. There is a thin water film on the moisture surface of the fiber paper, when the outside heat air is inhaled through the pad by the ventilator, the moisture on the water film will absorb the heat and be vaporized into vapor, so the cool and damp air will enter into the house. The temperature which the damp curtain can decrease is determined by the temperaturedifference between the wet-bulb and dry bulb and the efficiency of the damp curtain, their product if the decreased is fixed generally. We can see, the hotter the weather is the better the effect of the damp curtain will be.