The sniper starts from the bright sword escape period

Chapter 247 How Long Can A Cubic Air Be Used For?

At this time, Wu Wanli was not when he first joined the army, so unless he was returning home, Wu Wanli would be called by his professional title in the team.

Wu Qianli glanced at Wu Wanli before saying:

"Naturally, I have encountered something very happy!"

While talking, Wu Qianli paused for a while, thought for a while and said:
"I left home earlier, and you have only been away for a year. Do you know if there is any place in our house that is suitable for diving training and there is no one around?"

When Wu Wanli heard Wu Qianli's words, he was also very surprised, so he asked very puzzled:

"Brother, why are you asking this! Could it be that this battle is over, do you want to go home and practice diving? But brother, just give up! I am not your opponent on the shore, but neither of you is me in the water opponent's!"

Seeing Wu Wanli's proud look, Wu Qianli nodded and admitted:
"That's right, this time the higher ups have given us a very special mission for the Interlude Battalion. This mission requires us to conduct underwater combat, and in order to achieve a concealed and sudden effect, we'd better do it quietly during our training to prevent being caught by the secret agents." Found."

After Wu Wanli heard what Wu Qianli said, he understood almost instantly that the higher-ups were planning to attack the fleet of the Mi Army. Although Wu Wanli had never heard of the record of the Yidali frogmen, this could not stop Wu Wanli imagination!

After all, when he was not a soldier and was still in his hometown, Wu Wanli offended him. Wu Wanli would not only throw stones at him, but also dive into the water. Man, Wu Wanli was able to become the king of children in his hometown not only because of his accurate throwing of stones, but also because of his underwater skills.

So Wu Wanli, who understood, immediately lowered his voice and said to Wu Qianli:
"Brother, is this the higher-ups planning to attack the warships of the Mi Army?"

Wu Qianli heard Wu Wanli's whispered words, and immediately replied in a low voice:
"Okay! It's fine if you know it. Don't talk nonsense, let Mi Jun hear that it's not good to be prepared! Now we are leaving for the interlude camp. Before you go home, you have to think of a good training place! "

"Brother, don't worry, I have already decided that it is suitable for our interspersed battalion to conduct underwater training. When the time comes, I will be the coach and promise to train every soldier in our interspersed battalion to become an underwater dragon."

So the next day, Wu Qianli took his interlude battalion to the Yalu River, and then took the train back to his hometown.

But Bai Lixiu didn't pass through, and got off the train in Sijiu City.

"Good! Good! That's it, stop!"

In an unremarkable mechanical processing workshop in Sijiu City, Bai Lixiu was directing several master craftsmen to cast an aluminum bottle with a sand mold.

After a while, Bai Lixiu scraped away the sand, took out the poured aluminum bottle that had already been shaped, and nodded in satisfaction.

That's right, the aluminum bottle that Bai Lixiu got was intended to store high-pressure gas for underwater breathing.

Of course, if it was in the era before Bailixiu crossed over, it would not be so troublesome for Bailixiu to get diving equipment. Just place an online order for a maximum of 2000 yuan, and you can get it done.

But in this generation, Bai Lixiu had no choice but to set out on her own to get enough food and clothing.

Fortunately, Bailixiu knows the structure of high-pressure gas cylinders and constant pressure valves. After all, Bailixiu was also a diving enthusiast before crossing.

Dreaming of finding a sunken ship or something in the water that day is a big fortune. As for why Bai Lixiu had such an idea, it was naturally caused by reading a certain novel.

However, Bai Lixiu, who has dived hundreds of times, gave up this unrealistic idea after seeing nothing but sand at the bottom of the water.

This time, the high-pressure gas cylinder that Bailixiu poured out of melted aluminum water has a large capacity, about three liters, which is about the same as the largest large Coke bottle that Bailixiu drank before crossing.

If the high-pressure gas is filled according to the standard pressure of [-] MPa in the aluminum bottle before crossing, then the aluminum bottle with a capacity of three liters can hold about one cubic meter of air.

According to the normal air consumption of ordinary people, one cubic air is generally consumed in about two hours.

Of course, the compressed air carried on the back when diving is different from the air consumed in a confined space.

When diving, the compressed air in the inhalation tank is sucked into the lungs and then spit out into the water, and will not be spit back into the compressed air cylinder.

But it is different in a confined space, the exhaled carbon dioxide will stay in the confined space, and then increase the concentration of carbon dioxide in the confined air.

So the final result is the agreed air capacity. In a confined space, the final result is not death from lack of oxygen, but death from carbon dioxide poisoning.

However, this one cubic meter of air cannot be used for divers to dive for such a long time. After all, diving underwater is a physical activity that consumes a lot of energy.

So according to Bailixiu's diving experience before crossing, if you save a cubic meter of air, you can use it for an hour if the diving depth is not too deep.

In the world before Bailixiu crossed, the gas cylinders used for diving were generally AL80 aluminum cylinders with a volume of about 11 liters, and the gas cylinders filled with an air compressor were 200 MPa, that is, 2200L*[-]= [-]L compressed air.

How long a bottle of gas can be used underwater is determined by the depth of the dive.The deeper the depth, the greater the pressure, the denser the air and the faster it will be consumed.That is to say, for the same bottle of gas, the use time at 30 meters is less than that at 20 meters.As for how much less!

Then you must first understand what is the air consumption on the water surface. Simply put, it is the amount of air consumed when breathing on the water surface.The average water surface air consumption of an adult is about 14L/min.

Of course, this number is only for reference, and the air consumption is also affected by factors such as diver experience, diving environment and diving status.

You should know that every time the depth of water increases by ten meters, one atmospheric pressure will increase. The water surface is one pressure unit, and 1 meters is two pressure units. How long?
2200/14 L*2 ata = 78 minutes, 10 meters gas consumption is twice that of the water surface.

Similarly at 20 meters: 2200/14 L*3 ata =52 minutes
Similarly at 30 meters: 2200/14 L*4 ata =39 minutes
Of course, in the actual process of blowing up the ship, although the bomb should be installed on the bottom of the ship, that is, at a water depth of about ten meters.

But how deep to dive in the process of diving close to the battleship aircraft carrier depends on the visibility of the sea water and the time at that time.

After all, if the light is not good at night, let alone diving, you may not be able to find it even upstream of the water surface, but if it is sunny and the sea is clear, it is estimated that diving 30 meters is useless.

But Bailixiu would not be so stupid, he would choose sunny days and good lighting conditions to take the frogman special forces to blow up the battleship aircraft carrier.

Of course, it is only the beginning to get the aluminum cylinder right now, and the matching constant pressure valve must be used.

(End of this chapter)