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��Home>>China Travelling
Reliable oxygen supply on Qinghai-Tibet train
www.chinanews.cn 2006-06-30 15:39:16
Chinanews, Beijing, June 30 - In these two days, many travelers went to
the Beijing railway station to buy Qinghai-Tibet railway tickets. They
would like to experience the fresh feeling of entering Tibet on board a
train, but fear that there is no sufficient oxygen supply up on the
Qinghai-Tibet Plateau. Relevant experts indicated that adequate
preparation had been made in this area. The train has a reliable oxygen
supply system. Toxic gases would not be generated during the process of
producing the oxygen, and the amount of oxygen in the railway carriages
would not be affected significantly when the train door is opened as the
train pulls in at a station.
Experts stated that in order to deal with the oxygen deficiency problem
in the high altitude environment, Qinghai-Tibet trains are specially
equipped with oxygen supply systems, with two sets in every compartment.
One set provides oxygen supply through the method of diffusion. It mixes
the high-oxygen air produced by oxygen generators and those from air
conditioning systems and sends them to every corner in the compartments
through delivery conduits. In this way, the oxygen content in each
compartment reaches 23.5%, and could go as high as 25% when needed. The
other set is a centralized oxygen supply system. Every passenger is able
to directly breathe in high-concentration oxygen through special openings
and oxygen masks. It is designed to satisfy special passengers' demands
for high-concentration oxygen in the oxygen-deficient environment up on
the plateau.
Experts specifically pointed out that when passengers get in and out of
the train at the plateau area, loss of some oxygen is inevitable due to
the fact that the carriage doors are open and there is a concentration
differential for the oxygen inside and outside the train. However, there
is no need to be overly worried about this problem. When the doors are
closed, the oxygen concentration inside the train would return to the
original level in less than half an hour, because the oxygen supply
system keeps working all the time.
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