Changsha Metro Line 6 leaks?A response is here

"Only when it was opened, the facilities were not installed in place?" On July 4, some netizens posted a photo. The photo can be seen on the photo of Changsha Metro Line 6 Changfeng Station. Suspecting that there is water leakage in the subway. What is the fact? On July 5, the reporter went to Changsha Metro Line 6 for investigation.

Live: There is no stagnant water in the platform, there is no water mist on the shielding door, but there is a trace of water stains

On July 5th, the reporter visited the three stations: Southern Railway Station of Changsha Metro Line 6, Xiangya Hospital Station and Wenchang Pavilion Station. No obvious accumulation of water was found on the ground floor of the three platforms, and the sides of the shielded door were also dry. However, at the Wenchang Pavilion Station, the reporter found traces of wired water stains inside the shielded door.

The reporter reflected the situation of the shielded door shot by netizens to the staff of the platform No. 6 of Changsha Metro. The staff explained that this is not the water leakage of the subway, but because the subway tunnel is more humid in the rainy season. In addition, the platform is opened because the platform is opened. The air conditioner and fresh air equipment cause different temperatures and humidity on the sides of the shield door. Therefore, the tunnel side with higher temperature of the shield door will appear fog or even condense water droplets, and passengers can still rest assured to take the subway.

Principle: Fog knot exposure is actually very common

In fact, in our lives, we often encounter the foggy or condensed water droplets in the windows of the windows, most of which occur in the rainy season or winter in the summer. When there is a certain temperature difference and humidity difference inside and outside the car, a higher temperature and a large humidity will fog, that is, when high -temperature water vapor encounters low -temperature objects, water vapor will form a small on the surface of the low -temperature object to form a small ones on the surface of the low -temperature object. Water droplets are the principle of forming water droplets with hot water on the surface of the glass.

The reporter inquired about the relevant information and found that the temperature of the exposed phenomenon was called the dew point temperature, referred to as "dew point" for short. The essence of the exposed phenomenon is that the environmental temperature or the surface temperature of the object is lower than the dew point temperature causes the water vapor in the air to condense. The larger the temperature difference, the greater the humidity of the air, and the heavier the fog.

In the rainy season in the summer, when the citizens take the subway, there must be a clear feeling, that is, the subway station is cooler and more dry than the outdoor. Therefore, water mist condensation on the side of the subway shield door tunnel is not the leakage of the subway. subway.

Source | Sanxiang Metropolis Daily · New Hunan Client

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