Holding the hammer he took from the workbench, Chen Xin hammered at the ice in the bunker, gasping from exhaustion.
Leaning on his waist, Chen Xin leaned against the wall in the bunker and took a deep breath. Although the oxygen content in the shelter was not low due to the presence of an oxygen generator and a greenhouse, this location could actually be considered the outside world. In Chen Xin's case, After the fresh ice removal, he couldn't help but feel short of breath and out of breath.
He reached into his pocket and took out an oxygen bottle, opened the protective mask on his face, and took a few breaths into his mouth and nose. After feeling much better, Chen Xin put on the protective mask again and straightened up.
"Huh, how long will it take for this to end!" Chen Xin couldn't help but sigh. After the ice accumulated thickly, it was impossible for the small hammer in his hand to break it. If he hit it hard, he would only knock out some ice slag. .
This can't help but make him feel a little frustrated. De-icing is not an easy job. It's not like shoveling snow. How can you clean it with a shovel
But ice, especially frozen ice, is very difficult to clean. In the past, if it was frozen in many places, the snow and ice would not melt until spring began.
But now it was no longer possible for Chen Xin to wait until the temperature rose and the flowers bloomed in spring. The ice had melted on its own. He had to find a way to clear away the ice that was at least thirty centimeters thick in front of him.
To be honest, he had expected that there would be ice accumulation, and he also knew that the ice accumulation would be more serious if he was not there for a few days, but he did not expect that the ice would already be a foot thick.
Such thick ice is difficult to clean even with a professional ice pick, iron fiber, or a sledgehammer, not to mention that Chen Xin only has a small hammer in his hand.
I took the hammer and hit the ice a few more times, but it seemed to have no effect. Apart from a few broken ice shards, there were no cracks on the ice.
This made Chen Xin frustrated and lamented in his heart. It would be great if there was any way to solve the ice accumulation problem at once. It would be even better if the ice accumulation problem in the vents could be further and completely solved.
How can it be so easy to just solve the problem? Chen Xin smiled bitterly and hit the ice again with a hammer.
While smashing, Chen Xin was also thinking about how to solve the problem of ice accumulation.
The main reason for ice accumulation is that the air blown out from the shelter by the vents contains water vapor, which quickly condenses and sinks when it encounters cold. It freezes into ice before it even flies out, and then accumulates here.
This can be seen from the fact that Chen Xin knocked ice cubes for a long time and ice formed on the surface of his protective clothing.
After patting off the ice on the surface of the protective suit, Chen Xin sighed. Although he knew the principle, removing moisture from the air blown out of the vents was not a matter of upgrading the ventilation system.
If he wants to remove moisture from the air, Chen Xin does know how to do it, and that is air drying. However, this is mainly a technology used in industrial production. It is too wasteful and consumes a lot of money to use it for ventilation and exhaust in shelters. .
So in Chen Xin's idea, it is enough not to freeze in the small bunker.
In this case, improving the ventilation form of the exhaust vents, or adjusting the structure of the small bunker and moving the vents to the outside can also solve the problem.
But Chen Xin is a little reluctant to move the vent to the outside, because in that case, the temperature of the air blown out of the vent will be significantly higher than the ambient temperature. Although it cannot be seen with the naked eye, with an infrared telescope, the vent will be the same as the ambient temperature. Searchlights are as conspicuous in the dark night.
And although the vents are not so big that someone can crawl in like those in European and American movies, it will still cause a lot of problems if someone discovers them.
Now put it in a small bunker. Although there is a possibility of being discovered, the risk is still much smaller.
Therefore, to solve the problem, it is best to find a way to prevent the water vapor from freezing in the small bunker.
Chen Xin was thinking hard, and suddenly he hit it with a hammer, and an idea suddenly came to his mind.
"I'm really stupid. I'm done with the system upgrade!" Chen Xin slapped himself on the forehead, secretly annoyed that his mind was so confused after staying at Qin Lan's these days that he didn't even remember that he could still use it. System upgrade to solve the problem.
Chen Xin called out the system interface, took a look at the four-digit survival points accumulated on it, and felt confident.
These survival points were prepared by Chen Xin in order to upgrade the shelter as a whole. He used some points when building a ground source heat pump, but he has been away from home for the past few days, and he has gained quite a lot of survival points every day, nearly 40 survival points every day. The point income allows him to easily use the survival points to transform and upgrade the small bunker.
"Rudimentary observation room"
"Upgrade Plan 1: Increase the area of the observation room, improve the building structure, increase concealment and breathability, enhance the shortwave antenna signal reception capability, and upgrade the required 700 survival points."
"Upgrade Plan 2: Improve the defense capability of the observation room, improve the building strength, increase the heat insulation protection performance, increase the protection of the observation port, and upgrade the required survival points to 1100"
Both upgrade plans are not very cheap, and the emphasis is still different. However, due to the limited availability of building materials and the fact that the existing materials are all prepared for the overall upgrade of the shelter, Chen Xin did not use both. way to upgrade.
After comparing the two options, he chose to spend 700 points to upgrade the first option, which was an option to enhance the concealment and ventilation performance of this small bunker. It could also improve the shortwave antenna he installed here. signal reception capability.
Although Chen Xin also wanted the second option, the survival points could not be consumed too much. After hesitating for a moment, he gave up on this upgrade option, which was obviously to evolve the small bunker into a bunker.
After the upgrade, the area of the small bunker has increased a bit, and the overall shape is a perfect circle, but it has not expanded too much. The observation port is still the same as before and has not changed.
It’s just that the original vents in the room have become ventilation ducts buried in the wall, and ventilation will be provided through the outer wall facade of the small bunker.
This obviously perfectly solves the problem of ice accumulation in the vents in the room, and because the ventilation ducts run from the outer wall of the observation room, the air coming out of the vents will first lower its temperature in the ventilation ducts before being discharged. From an infrared perspective, it is not so obvious.
Regarding this point, after the upgrade was completed, Chen Xin came out of the door of the shelter and used the infrared vision function of the tactical eyepiece to observe the location of the observation room. Indeed, he could no longer see much traces of the air exhausted from the vents. . (End of chapter)