Doomsday Bunker Upgrade Chapter 76: Oxygen production system in official shelters

"What are these?" In the central room of the air circulation duct of the police station shelter, Uncle Ding looked at the pieces on the shelf in front of him, and asked inexplicably, "Looks like glass plates?" /

　　A technician who was debugging these equipment heard Uncle Ding’s question and explained to him while continuing his work: "This is an algae cultivation tank. The standard name is the biological reaction facade..."

　　 Checking the condition of a bio-reactive facade, the technician continued: “Of course, in terms of materials, you can indeed call them glass plates. These are all made of plexiglass, and the facade is hollow. Yes, after filling the medium, water and carbon dioxide will be used to propagate the algae."

Seeing that there are thousands of pieces in front of them, and more biological reaction facades are being installed, the city police station manager with Uncle Ding asked, "Can they be used for oxygen supply? With these algae? "

"Yes, rely on these algae." The technician nodded and tapped a bio-reaction facade with his finger: "These algae will obtain the light required for photosynthesis under the illumination of the sun lamp. Yes, we fill it with carbon dioxide through the pipes at the lower end of the facade, so that the algae inside can perform photosynthesis, and the pipes at the top are responsible for collecting the oxygen released by these algae and supplying the air circulation system of the shelter for use.”

　　 "Rely on these...what is the facade of the creature?" Another manager also spoke, showing a strong suspicion and distrust: "Can these things be used by 20,000 people in this refuge?"

　　When the manager spoke, the managers of the city police department all showed the same look.

　　 It’s not that these managers don’t know how to pretend or look down on the technicians, but the thousands of glass panels installed here can supply the entire refuge’s oxygen consumption, which indeed makes people doubt it. Is it really possible.

　　"These biological facades use microalgae biological reaction oxygen production technology. The Germans have done a similar technical experiment in the past and built a residential building that uses this biological reaction to build the outer wall. After the reaction, the biomass produced by the bio-houses provides enough heat and electricity to supply the needs of the three surrounding houses.” The technicians were not surprised by this, and continued to explain to the managers of these municipal police stations.

After all, it is a matter of life and death for more than 20,000 people in this shelter, and the technicians also feel that they should explain it more clearly.

"We improved this technology. We originally planned to use it on submarines for experiments to see if it could be used as an oxygen supply system for submarines to increase the time that submarines stay underwater." The technicians did not conceal that it was originally for military use. The fact of the experimental technology, but continued: "The efficiency of algae producing oxygen is actually the highest among all living things on the earth. 70% of the oxygen on the earth comes from the marine ecosystem, so relying on algae to supply oxygen to the shelter is theoretically No problem at all.

As for whether the oxygen production can ensure the survival needs of 20,000 people, please don't worry about this. This system is designed to meet the needs of 30,000 people.

　　 And although the oxygen content in the outside air will decrease, it is not to the point where humans can't survive, but the oxygen content will decrease to a level similar to that of the plateau. This system is mainly to prevent oxygen. After the content dropped, carbon dioxide deposits and lack of oxygen inside the shelter due to underground structures. "

The technical staff's explanation reassured the managers a lot. After listening to the explanation, the staff in charge of logistics discussed something.

　　"Did you say that the oxygen content of the external environment will not drop to the point where humans cannot survive?" When the technicians mentioned the issue of external oxygen content, Uncle Ding was particularly concerned because the SWAT team is currently in the police station. He is very concerned about this problem in the department that goes out to work the most.

　　The technician seemed to be very interested in answering this question, and stopped the work at hand and explained: "The total amount of oxygen in the earth’s atmosphere is about one trillion tons, and a person breathes about 270 oxygen each year. about kilograms.

　　 Even if calculated at 0.3 tons, even if the earth’s 7 billion people are still there, it would take 550,000 years to consume the oxygen in the atmosphere, and it would take thousands of years to reduce the oxygen content by 1%. "

　　 said here, the technician laughed and added jokingly: "Of course, this is actually impossible. Even if the atmospheric environment drops by one or two percentage points, it is enough to cause human hypoxia. , If the oxygen content in the atmosphere is less than 15%, it is enough to cause serious consequences.

　　 The previous meteorite impacts and global fires have consumed a considerable part of the oxygen in the atmosphere. According to calculations, the oxygen content in the atmosphere has dropped by about 0.5 to 1%~IndoMTL.com~In addition, there is no sunlight, photosynthesis The effect is close to stagnation, no new oxygen is produced in the atmosphere, and the oxygen content of the external environment can still be maintained at about 18-15%, of course, it depends on the region and environment.

However, in the shelter, due to the problems of the underground building itself and the ventilation system alone, the oxygen content will be lower than the outside world. According to calculations, if there is no oxygen supplement inside the shelter, the oxygen content is It is likely to fall below 15% and form carbon dioxide deposits, leading to hypoxia. "

　　 Hearing the explanation from the technician, Uncle Ding nodded clearly, but his brows wrinkled.

　　 The external environment can survive and cannot survive, and the issues that the SWAT team needs to consider when going out on the field are completely different.

　　The external environment cannot survive, and the dangers in the external environment will mainly come from the harsh natural environment. This can be used to improve the protective equipment and safety measures of the field personnel to ensure the safety of the field personnel.

However, if the external environment can still survive, but the conditions are worse, then the danger will undoubtedly increase greatly for the field personnel who go out to perform tasks.

In the peaceful era, there were still many criminal acts such as two robbery and one theft. In the end of the world, with the weakening of the government's control over the city, there will be criminal acts even inside the shelter. Is it an area beyond reach?

　　 The technician seems to have seen Uncle Ding’s worry, and smiled and comforted him: "But this comrade, you don’t have to worry too much. In addition to hypoxia, the temperature in the wild will also severely restrict human beings in the wild. In addition to the low temperature of -tens of degrees below zero, coupled with the lack of oxygen, not many people can stay in the wild for a long time in this harsh environment."