Subway cold knowledge What is the "cotton cotton" in the subway?

"Don't underestimate the layer of insulation outside the pipe, without it, the small environment in the subway would not be as comfortable and pleasant as it is now, warm in winter and cool in summer." The relevant person in charge of the facilities department of the operation branch of the Municipal Rail Company said.

In the daily work of the facilities department of the Municipal Rail Operation Branch, everyone habitually refers to the environmental control profession as "wind". Yes, it is the wind that we cannot do without in our daily lives. The environmental control maintenance major is mainly responsible for ensuring the normal operation and maintenance inspection of various ventilation and air conditioning equipment in the public area, payment area, equipment area and section tunnel in the subway station.

In order to allow the inbound passengers to have a comfortable riding environment in different seasons, the staff have wrapped glass fiber insulation cotton on the outside of the large and small system air pipes and air conditioning pipes, which will make the pipes more insulating, so that the subway station not only has fresh air but also a pleasant environment, so that it is really warm in winter and cool in summer.

"Glass fiber insulation cotton is an inorganic non-metallic material with excellent performance, the advantages are good insulation, strong heat resistance, good corrosion resistance, heat preservation, heat insulation, sound absorption, fire protection; but the disadvantage is brittleness, poor wear resistance." The staff said, "In the daily work, often encounter the problem of thermal insulation cracking and falling, when dealing with these failures, its brittleness, poor wear resistance shortcomings are magnified, each time after processing the fault can always get a body of cotton wool, which also means that every time you deal with a failure, you must wash your clothes." But sometimes it gets on the bare skin and makes people itchy. ”

Although the environmental control professional staff in the subway is called "wind", they can't blow off the "cotton" on their bodies, and it is precisely with these "winds" that we have a comfortable and pleasant subway environment.