Chapter 65 Power Station
Chen Mu and others returned indoors and asked Tang Jing to tell everyone what she thought. Although everyone did not understand it very well, they all raised their hands to express their agreement. Anyway, they would take a bath if they knew there would be water in the future. That's it.
Work quickly began to move forward.
In fact, the twelve people nowadays really don’t have much else to do.
The cleaning in the room has been done in an orderly manner, and some things that are too big that even Wei Dalei can't move can only be left to him temporarily.
Anyway, the space everyone needs is not that big.
"Let's start with something simple. Make the water tank." Tang Jing quickly stepped into the role of chief engineer.
"Material should be metal or plastic?"
"Both have advantages. Metal is more stable, but plastic is more practical and easier for you to control, right?" "Yeah.
" Chen Mu nodded.
"Also, it's easy to see the water level."
"Then, what's the thickness?"
"The side walls are 3 mm, the bottom is 4 mm, and the top is 2 mm."
After the experience of building a house last time, Chen Mu was not interested in this job. Strange, the only problem is that the scale of what we need to do this time is much larger.
the first thing.
It is to make a plastic plate with a length and width of 8 cm and a thickness of 4 mm.
This plastic board was spread out on the floor and it felt bigger than the previous room.
Fortunately, Chen Mu is already very good at controlling plastic. Although the size is a bit large, as long as he spends some time, there is no problem.
At this time, Wei Dalei was leading the boys to move out some raw materials from the cartons, most of which were disposable plastic spoons and the like.
While Chen Mu was working, he suddenly thought of a question: "I don't know how Qingbei people can solve the drinking water problem?"
Zhao Xiaoyan and other girls had no work at the moment, so they gathered around Tang Jing and Chen Mu. Around him, there were a lot of talking, pointing, and discussing various issues.
Hear Chen Mu's question.
Du Jiajia said: "Because there were many people attending the exchange meeting, there were a lot of bottled water on the playground, which should be enough for them to use for a long time." "
But why were Song Yu and the others still dirty when I saw them last time? He looks like we have not washed his face for a long time." "
Maybe there are so many of them that they don't dare to use it casually, so they just use it for drinking." "
There is a ready-made faucet over there at No. 1 Middle School, which solves the problem once and for all. Water problem." He Ying seemed to lament the other party's good luck.
However, Tang Jing suddenly smiled: "It's impossible to fix it once and for all. That faucet is probably no longer producing water." "
Why?"
"It should be said that almost all tap water has stopped now."
"Ah?" Everyone was stunned.
Chen Mu had never thought about this problem at first, but after Tang Jing reminded him, he suddenly said: "Because there is no electricity."
Tang Jing smiled and said: "Yes, although you call for tap water, you don't really get it yourself, it's all water." The factory water pumps enter the municipal pipe network, and then is transported through layers of branch pipes." "
Then why was it still there a few days ago?" He Ying was puzzled.
"Electricity in commercial cities generally comes from two sources. One is the thermal power station in our own city. The power generation meets 70% of the entire city's electricity consumption, while the other 30% comes from the Qin City next door. " Our
Shangshi thermal power station uses coal as fuel. Every eight hours, fuel must be added manually. So theoretically, after the end of the world, our city will only have electricity for eight hours at most." .
"However, nuclear power plants and hydropower stations are different. These two power plants have a higher degree of automation and can continue to operate automatically for a long time without people. Under ideal circumstances, China's largest Jiutian Hydropower Station It can run continuously for a whole year without human intervention."
"Is that an exaggeration?" Even Chen Mu, including Chen Mu, couldn't imagine such a thing.
Tang Jing smiled and said: "Of course, this is just a theory. No one knows what the actual situation will be, and no one dares to try it. But I estimate that it will not be a problem for some large hydropower stations to continue operating for a few weeks after humans disappear. "
The situation of the nuclear power plant is a little more complicated. It can also run on its own for a period of time, but after that, because the cooling system will shut down first, the temperature of the reactor will continue to rise. After a period of time, it will either be forced to stop by the system, Either that or...boom! "
Tang Jing spoke and made an explosive gesture with her hands.
"So, we were able to use tap water a few days ago, but when all the power was cut off, there was nothing left? "
In fact, it is not just a problem with power plants and water plants. Both water and electricity will be transferred during transportation. Water may be pressurized twice, and electricity also needs to be transformed. If there is a problem in any of these links, , our terminal here cannot be used. To be honest, it is a miracle that the faucets in the school are still in use.
"Then we can only use rainwater from now on? " "
Of course there are rivers, lakes and seas, but they are too dangerous and too far away to think about yet. However, there is still a water source that can be used in the short to medium term." "
Where? " “
Fire water pipe network. "
"Doesn't the water in there need a pump? "
The fire protection system will be more complicated. Normally, pressurizing equipment such as fire pumps and pressure regulator pumps are used to maintain the pressure of the pipe network. However, in addition, according to fire protection regulations, a building of the size of our school must Set up a high water tank.
"High water tank? " "
Well, it is usually installed on the roof of the tallest building. Its function is to maintain the pressure of the pipe network, solve the initial water volume of the fire, and prevent water pump failure to a certain extent. The scale of the fire water tank is very amazing. If you only consider the water volume, It can manage our lifetime water use. "
So, even if there is no power at all, the fire pipe network will still be filled with water, right?"
"Yes, of course, provided the entire pipe network remains watertight. "
"Can we use that water? "
"There are certainly no fire hydrants here, but there are fire hydrants in the cafeteria and teaching buildings. You can use them. "
"That's completely useless to us. "
"But this water is very important to those people in No. 1 Middle School. Without tap water, their water use will definitely be a problem. "
"I don't think they would have thought of it. " "
Du Jiajia muttered, because no ordinary student would know the fire protection system in the school so clearly. If Tang Jing hadn't said it, she would never have known this in her life.
"Maybe.
Tang Jing smiled: "In comparison, the water diversion project we built is more stable and long-lasting. The only problem is that if it doesn't rain for too long, the quality of the stored water will gradually deteriorate. "
"It's already pretty good. Nothing is perfect. " "
Chen Mu spoke without stopping his hands at all.
soon.
The first formed plastic sheet was laid flat on the ground.
"Your abilities have improved a lot." Tang Jing said with a smile.
Chen Mu looked at his results within a few minutes.
He smiled and said nothing.
(End of chapter)