Environmental air-conditioning (wet curtain cooling fan) Wet curtain (also known as wet film) humidification system is a major component of the wet film, which is adding special chemical raw materials made of plant fiber or glass fiber, has good moisture absorption and wet stiff. recently successfully developed aluminum wet film wet film has a special shape, by designing special corrugation angle and cross structure, between the air and water offer a huge contact area. When evenly pour water to wet Most screens level sufficient contact to achieve maximum water evaporation. vapor away into the wind humidified space required, to achieve the purpose of humidification, while water evaporates, and absorbs latent heat of the air, so as to achieve the purpose of cooling.

Shanghai ventilation equipment manufacturers wet curtain fan cooling system consists of wet screens, fans, water circulation system and control device. It is the principle of evaporative cooling using water, wet curtain and fan were installed in enclosed premises of the gable ends, when the fan ventilation, causing indoor negative pressure, forcing the outdoor air flowing through the porous moist wet curtain surface is not saturated, causing evaporation, so that the indoor air temperature is reduced (4 ~ 10 ℃). The system is currently a large area of ​​agricultural production building the most cost-effective sunstroke, cooling facilities. It can be widely used in animal building, greenhouses and high-temperature workshops, especially while cooling and humidification needs a place, the effect is more significant. Its power consumption is equivalent to 1/10 of air conditioning equipment, apparatus fee equivalent to 1/7 of air conditioning equipment. Wet curtain thickness of 100 to 200 mm, the heat transfer area of ​​370 m 2 / m 3, the heat transfer efficiency of 75% to 85%, the resistance loss of 10 to 20 Pa. 9FJ series of low pressure high flow fan diameter of 560 to 1400 ghost meter, fan static pressure of 20 to 30 Pa, flow 8000 ~ 5600 m 3 / hour, 0.25 to 1.5 kilowatts installed power, noise ≤ 70 分贝 (A). 16 microcomputer-controlled device by the constitution, data acquisition, display, recording, control and alarm. The system overall technology has reached the international advanced level, in Shaanxi Province, the World Bank loan in the international tender and took first place in the country in a leading position. The technology has been transferred nationwide more than 10 manufacturers, since 1988, cumulative sales of wet curtain 9000 m 3, more than 50,000 fans, has been applied to more than 20 provinces and municipalities. Manufacturers and users total new value of 220 million yuan, the new S 000 million yuan in profits and taxes, saving 50 million kwh, benefit is significant.

Environmental air-conditioning wet curtain fan cooling system consists of special paper porous wet curtain water circulation system and low pressure high flow energy-saving fan components. Pad and fan were installed in both sides of the gable enclosed premises. The fan ventilation, causing indoor vacuum, forcing air through the outdoor unsaturated porous moist wet curtain surface, causing evaporation draw a lot of latent heat, thus reducing the temperature of the air itself. Wet curtain fan cooling system is running, the steady flow of cold air evaporative cooling after the introduction of indoor cooling. In the same cooling capacity, the cost of equipment wet curtain fan cooling system is only one-fifth of the air conditioning unit, operating costs only one-tenth of the air conditioning unit. Because of wet curtain fan cooling system equipment is simple, inexpensive an investment and operating costs, high cooling load capacity, more than 20 provinces and cities nationwide greenhouse, animal building, tissue culture domesticated room, among other high-temperature fermentation and workshops and other get a wide range of promotion and application. Shanghai ventilation equipment manufacturers of low voltage and high axial flow of the system using the world's advanced energy-saving fan torsional deflection of the airfoil surface, in the same amount of exhaust wall, exhaust fan wall than our current energy-saving 50 to 60% . Wet curtain fan cooling system, in Beijing, Wuhan, Changsha, Nanchang, Shanghai, Chongqing, Guangzhou and other places of the house used in the summer egg production rate of 5 to 6 percent, the mortality rate dropped by 3 to 5 percent, while improving feed conversion fertilization rate, the general year to recover the investment, benefit is significant.