Technicians are cleaning and maintaining the train 188bet sports betting app download conditioning system. Photo by Xinhua News Agency reporter Yang Qing
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◎Component Liu Mingda Reporter of this newspaper Han Rong
Recently, many places in my country have encountered high temperatures. When people step into the high-speed rail car from the waiting platform, they are instantly wrapped in cool air, and the heat dissipates, making them feel more comfortable. How to create a comfortable environment for passengers with EMU air conditioners? A reporter from Science and Technology Daily recently went to the Taiyuan Vehicle Depot of 188bet sports betting app download Taiyuan Bureau Group Co., Ltd. to explore the mystery.
Zhang Liguo, head of the EMU Section of Taiyuan Vehicle Depot of 188bet sports betting app download Taiyuan Bureau Group Co., Ltd., introduced that the EMU air conditioning unit located on the roof is mainly composed of key components such as compressors, condensers, and evaporators. It is like an efficient "air conditioner factory", operating with the help of electric-driven compressors, allowing special refrigerants to circulate in closed pipes. The refrigerant absorbs heat at the evaporator, reduces the temperature of the surrounding air, releases heat at the condenser, "carries" the heat into the outside atmosphere, and continuously circulates to reduce the temperature in the car.
"The power of EMU 188bet sports betting app download conditioners is not only in the refrigeration function, but also in the ability to intelligently adjust according to different environments and needs." Zhang Liguo introduced that during the operation of EMUs, the external ambient temperature, humidity, sunshine intensity, and the number of passengers in the car will change at any time, which will affect the heat in the car. In order to ensure a comfortable ride environment, the EMU 188bet sports betting app download conditioning control system will monitor the temperature, humidity, carbon dioxide concentration and other parameters inside and outside the car in real time.
When the train passes through an area with higher temperatures, or the increase in the number of passengers in the car increases heat, the control system will automatically adjust the working frequency of the compressor, the speed of the fan, and the flow of the refrigerant to accurately control the refrigerant. Zhang Liguo gave an example. When the train drove from a cool mountainous area to a hot plain area, the EMU 188bet sports betting app download conditioner could quickly sense the changes in the ambient temperature and automatically increase the refrigeration capacity to ensure the stability of the temperature in the car.
In addition to adjusting the temperature, the EMU 188bet sports betting app download conditioner also shoulders the heavy responsibility of 188bet sports betting app download purification and circulation.
"The car is a relatively closed space. If the 188bet sports betting app download does not circulate for a long time, it is easy to lead to an increase in the internal carbon dioxide concentration and the breeding of odors." Zhang Liguo told reporters that in order to solve this problem, the EMU 188bet sports betting app download conditioner adopts a "fresh 188bet sports betting app download + return 188bet sports betting app download" mixture mode: on the one hand, an appropriate amount of fresh 188bet sports betting app download is introduced to ensure sufficient oxygen in the car; on the other hand, part of the 188bet sports betting app download in the car is recycled, filtered, purified and then sent to the car.
In order to ensure that the train "breathes" and the circulating 188bet sports betting app download is fresh and clean, when the EMU "returns home", the EMU mechanic will provide it with "washing, inspection and blowing" services. Staff will regularly clean the heat dissipation fins of the 188bet sports betting app download conditioner unit, use high-pressure 188bet sports betting app download ducts to blow dust on the equipment, and remove long-term accumulated dust and debris. At the same time, staff will replace the brand new 188bet sports betting app download conditioning filter to ensure that the filter can work efficiently.
In addition, after the operation is completed, the staff will also check the 188bet sports betting app download conditioner of the car to check the 188bet sports betting app download supply temperature, return 188bet sports betting app download temperature and the operating status of various electrical appliances.
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