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    Hot Exhibition Hall Installs Sprayer To Adjust Air Humidity

    2010/6/23 16:11:00 22

    World Expo

     


    At 10:30 on June 22nd, Shanghai

    World Expo

    When the French Pavilion closed, a group of technicians entered the greenhouse in front of the queuing area. They would install sprayers for the French Pavilion overnight to cool down the summer for tourists queuing here.


    Reporters from the installation company learned that, since entering the hot summer, some popular pavilions have come to ask them to install spray cooling device.

    "During the day, visitors will have to visit, only to work overtime at night to help install."

    Zhao Weisen, the company's chief technology officer, said that from late last night to last night, they had helped visitors in Holland, Brazil, France, the United States, Canada and other exhibition areas to install spray devices. "There are dozens of hot pavilions waiting for us."


    Water spray should be regulated by air humidity.


    June 22nd is a hot weather with the highest temperature reaching 33 degrees Celsius.

    During the hot noon, many tourists did not dare to queue up at the gates of each exhibition hall, but to avoid the summer holidays under the shady Expo Axis or elevated trails.


    The viaduct covered the sun for tourists, and what the tourists enjoyed was that all the sprayers under the viaduct were all open.

    Reporters yesterday in the park viaduct underneath experience, from the hot sun into the bridge, suddenly entered the air-conditioned room, the temperature below the bridge deck 4 degrees to 5 degrees; fine mist spray on people's faces, cool and comfortable.

    The droplets of these spray droplets can be calculated in micron size, as fine as hair. Because the droplets are very small in diameter and will soon evaporate in the air, tourists will not even be wet with clothes.


      

    World Expo

    The most famous spray cooling building in the park is the World Meteorological Museum, which looks exactly like "water droplets in the clouds".

    According to Zhao Weisen, for the World Meteorological museum to earn enough eyeballs, "cloud droplets" is actually a landscape formed by simultaneous atomization of 4100 nozzles.

    The special nozzles are installed on the curtain walls of the meteorological Museum, which generate high pressure through 3 custom units. The water is pported to the nozzle at the speed of 92.9 M / sec. The tap water is ejected under the high pressure to hit the firing pin of the nozzle, resulting in the diameter of only 4 microns, which is finally sprayed into the air under the action of the fan.


    The cooling function of the World Meteorological museum can be realized in two aspects. One is the cooling of the building itself, the other is the cooling of the tourist areas in the gymnasium. It has achieved better environmental protection and low carbon cooling effect. Therefore, standing in the World Meteorological Museum and the outdoor queuing area, it is obvious that the water mist brings cool and cool. People standing in it can have cool coolness, but not wet clatter, too. The cooling function of the World Meteorological museum is cool in the two place.


    Since the humidity of the air in Shanghai is relatively large, how can it ensure that there is no wet feeling to the human body after the water mist is ejected?


    Technicians said that the system research and development department made a very precise calculation, and the size of the spray volume will be adjusted according to the humidity of the air in the rest area. If the air humidity is large, the water volume will be smaller. The aim is to ensure the comfort after spraying to the tourist's face.


    Dozens of exhibition venues booking installation


    The outdoor area of the Expo site using spray devices mainly includes viaducts, the entrance and exit of Expo Park, and the queuing passages of the exhibition halls.

    It is understood that a total of 16 outdoor areas were equipped with spray devices, and the technology and installation of these facilities involved about four companies. Among them, the "fog doctor" built a 2/3 area.


    According to Zhao Weisen, there were not many spray channels installed in the exhibition hall. Besides the World Meteorological Museum, there were Expo Park Pudong entry and exit, Expo Park, South Korean Pavilion, Zhejiang Pavilion, China Aviation Museum, Vanke hall, China private enterprise joint Hall, SAIC General Motors Pavilion and so on.

    "After the summer, on the one hand, the weather became hot. At the same time, the organizers of World Expo and the exhibition hall gradually felt that the spray device could play a very good cooling effect, so more and more hot pavilions were added to the installation appointment."

    Zhao Weisen said that at present, they have received dozens of installation projects for queuing channels in the exhibition hall. "We only have to work overtime overnight, all of our technicians and workers are put in, and we can install two to three pavilions every night."


    According to the introduction, the spray device adopts a completely physical way, taking water as raw material, and does not generate two pollution at the same time. It is suitable for outdoor cooling and is in line with the concept of low carbon energy conservation and environmental protection advocated by the state.

    Chen Jiangxi, the technician of the installation company, said that the cooling rate of the spray device was generally around 6 degrees Celsius, and the extreme cooling rate was 14 degrees Celsius.

    "Because the negative ion content of man-made fog is 2000-5000 times that of ordinary city air, it can greatly enhance the comfort of human body."

    Chen Jiang said in detail.


    Zhao Weisen compared the difference between the traditional fan and the spray device. "In the hot outdoor, it is very difficult for the fan to cool down, because the hot air is blowing out, and in terms of power consumption, the same area of the spray device compared with the fan, the power consumption is about 1/4 to 1/2 or so."

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