Chapter 150: Observation room upgrade

"I can upgrade the shelter ( to find the latest chapter!
Holding the hammer taken from the workbench, Chen Xin hammered the ice in the bunker, panting with exhaustion.
Leaning on his waist, Chen Xin leaned against the wall in the bunker and took a deep breath. Although the refuge has an oxygen generator and planting greenhouse, the oxygen content has not been low, but this position can actually be regarded as the outside world. After Xin's deicing just now, he couldn't help feeling short of breath and unable to breathe.
Reaching out his hand, took out an oxygen cylinder from his pocket, opened the protective mask on his face, and took a few breaths into his mouth and nose. Chen Xin felt better then put on the protective mask again and straightened his waist.
"Huh, when does it have to hit the head!" Chen Xin couldn't help feeling, after the ice accumulates thick, it is not the small hammer in his hand that can strike it, and when it hits it hard, it will knock some ice down. .
This inevitably made him feel a little frustrated. Deicing is not an easy job. It is not like shoveling snow, how can it be cleaned up with a shovel.
But ice, especially frozen ice, is very difficult to clean up. If frozen in many places in the past, the ice would not melt until the beginning of spring to melt the snow.
But now it is impossible for Chen Xin to wait until the temperature rises and the spring blossoms, and the ice accumulates on its own. He must find a way to remove the ice accretion that is at least 30 centimeters thick.
To be honest, he originally expected ice accumulation, and knew that it would be more serious if it didn't accumulate for a few days, but he didn't expect that the ice would have frozen a foot thick.
Such a thick ice accumulates, even with a professional ice axe or iron fiber, it is difficult to clean it up with a sledgehammer, not to mention that Chen Xin only has a small hammer in his hand.
I smashed a few more hammers on the ice with a hammer, but it seemed to have a chat, except for a little broken ice slag, there were no cracks on the ice.
This made Chen Xin frustrated and sighed in his heart that there would be no way to solve these ice accumulations at one time, and it would be even better if the ice accumulation in the vents could be solved further.
How can it be so easy to just want to solve the problem? Chen Xin smiled bitterly, and smashed the ice with a hammer.
While hitting it, Chen Xin was also thinking about how to solve the problem of ice accumulation.
The main reason for the occurrence of ice accumulation is that the air blown from the refuge from the vent contains water vapor, which quickly condenses and sinks when it is cold. It has frozen into ice before flying out, and then accumulated here.
This can be seen from the fact that Chen Xin hit the ice block for a long time, and the surface of the protective clothing on his body was frozen.
Chen Xin sighed after patted off the ice on the surface of the protective clothing. Although he knew the principle, it was not a matter of upgrading the ventilation system to remove the moisture from the air blowing from the vent.
To remove the moisture in the air, Chen Xin really knows the method, which is to dry the air, but this is mainly the technology used in industrial production. It is too wasteful to use in the ventilation and exhaust of the refuge, and it consumes too much. .
Therefore, in Chen Xin's vision, 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 to change the vents to the outside can also solve the problem.
But Chen Xin is reluctant to change 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 is invisible to the naked eye, with an infrared telescope, the vent will be The searchlights in the night are as conspicuous.
And although the vents are not as easy to climb in as in European and American movies, they can still cause many problems if they are discovered.
Now put it in a small bunker, although it may be discovered by others, it is still much less dangerous.
Therefore, to solve the problem, it is best to find a way to make the water vapor not freeze into the small bunker.
Chen Xinming thought hard, and suddenly a hammer fell, and a flash of light in his mind finally opened up.
"I'm so stupid, I can't finish upgrading with the system!" Chen Xin suddenly slapped himself on the forehead, annoyed that the brains he was staying with Qin Lan these days were so confused, he didn't even think that he could still use it. System upgrade to solve the problem.
Chen Xin called out the system interface, glanced at the four-digit survival points accumulated on it, and had enough confidence in his heart.
These survival points were prepared by Chen Xin in order to upgrade the refuge as a whole. He used some points when he made the ground source heat pump, but he was not at home for a few days, but his daily survival points were not low, nearly 40 points of survival every day. The point income makes it easy for him to come up with the survival points of transforming and upgrading the small bunker.
"Shabby Observation Room"
"Upgrade plan 1: Increase the area of ​​the observation room, improve the structure of the building, increase concealment and air permeability, and enhance the shortwave antenna signal reception capacity ~ EbookFREE.me ~ 700 survival points required for upgrade"
"Upgrading Plan 2: Improve the defense capability of the observation room, improve the strength of the building, increase the performance of thermal insulation, increase the protection of the observation port, and upgrade the required survival point of 1100"
The two upgrade plans are not very cheap, and the emphasis is still different. However, because of the lack of construction materials and the existing materials are prepared for the overall upgrade of the shelter, Chen Xin did not adopt both. Way to upgrade.
After comparing the two plans, he chose to spend 700 points to upgrade the first plan, which is the option to enhance the concealment and ventilation performance of this small bunker. At the same time, he can also improve the shortwave antenna installed here. The signal receiving ability.
Although Chen Xin wanted the second plan very much, his survival points could not be consumed too much. After hesitating for a while, he gave up this upgrade option which was obviously an evolution of the small bunker towards the 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 been expanded too much. The observation port is still the same as before, and there is no change.
It's just that the original vent in the room has become a ventilation duct buried in the wall, which will be ventilated through the facade of the small bunker.
This obviously solves the problem of ice accumulating in the room with the vent perfectly, and because the vent pipe runs from the outer wall of the observation room, the air exiting from the vent will first reduce the temperature in the vent pipe before being discharged. In the infrared viewing angle, it is not so obvious.
Regarding this point, after the upgrade was completed, Chen Xin came out of the door of the refuge, and used the infrared vision function of the tactical eyepiece to observe the position of the observation room. It is indeed hard to see the traces of the air discharged from the vent. Up.