Doomsday Bunker Upgrade Chapter 84: Mo Qingyan’s oxygen generator

　　 It is really unnecessary to make the corridor into a floor door. After all, the first two doors have been broken through. It is not very meaningful to make the corridor into a concealed door. Can someone else come in and still find a door?

　　 And the door is made into a floor door. After changing the structure of the corridor, it seems that it will become inconvenient to carry materials.

　　Since I don’t plan to move anywhere else, the blueprint for this gate is ready.

　　 Looking at the CAD design drawing done on the computer, Chen Xin couldn't help feeling a moment. This was the skill he learned when he got his first job when he just graduated from university. After so many years, he hasn't drawn a drawing for a long time. .

　　 Chen Xin originally thought that after the end, he would no longer draw drawings, but he didn't expect to use this skill again so soon.

　　 But reality is always more bizarre and complicated than we imagined. Maybe destiny will give you an unexpected surprise.

　　 Chen Xin couldn’t tell whether it was a surprise or a fright. He turned off the laptop again, put it on the bedside, checked the pistol in the bedside table and placed it in the most convenient place for him, Chen Xin Only then did the light in the bedroom be extinguished, covered with the quilt and closed his eyes.

　　 Tomorrow, he will have to upgrade the door and build an oxygen generator for Mo Qingyan. There are still a lot of things.

　　 But this feeling of fulfillment is not bad for Chen Xin.

　　When Chen Xin fell asleep, there was still a dim green light in the bedroom. That was the algae oxygen generator in the corner working.

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　　 Chen Xin, who woke up early, is already sitting in front of the workbench. He plans to prepare the oxygen generator for Mo Qingyan first.

　　The materials sent by Ding Ning are quite sufficient, and the oxygen generator is enough. The only trouble is that although the glass she brought is guaranteed to be in one piece as much as possible, there are still a lot of broken glass that need to be cut and spliced. .

　　 In fact, if there is a melting furnace to melt the glass and remake it into the required shape, it is the best use of the broken glass, rather than using glass glue to glue them together.

　　 But for Chen Xin, he only needs glass as a raw material. With the help of the system, he can easily process the glass into whatever he wants.

　　 Next to the workbench at this time, the original broken glass has been reshaped into a tall circular straight tube, and Chen Xin is making the base.

　　 This kind of microalgae oxygen generator base is the key. The glass straight tube is just a container relatively speaking. It doesn't really matter what shape it is made of, but the circular straight tube is relatively efficient in using light.

　　 Pipes and vacuum pumps need to be installed on the 　　 base to charge carbon dioxide into the circular straight cylinder to stimulate photosynthesis of microalgae.

　　 Therefore, the chassis should be laid with a ring-shaped pipe, and the air pump should be used to pump carbon dioxide into the pipe, so that the carbon dioxide can enter the ring-shaped straight cylinder from the small opening in the pipe.

　　 However, the preparation of high-purity carbon dioxide is more troublesome, and it also has a certain degree of danger. Therefore, Chen Xin directly uses ordinary air here, allowing the chassis to directly absorb the surrounding air.

　　 As for the fill light, it is installed on the top cover, because the ring-shaped straight tube is placed upright, the dead algae will be deposited to the bottom, relatively speaking, the light transmission will not be so good.

　　 There are various tools on the workbench and the upgraded oxygen generator in the bedroom as a reference. The oxygen generator for Mo Qingyan was made quickly.

　　 After all, the structure itself is very simple, and the technology is relatively uncomplicated. With the help of the system, Chen Xin quickly completed everything and assembled it together.

　　 Compared with the upgraded oxygen generator in the bedroom, the one made by Chen Xin by hand looks rougher, but there is not much difference other than that, for Mo Qingyan It is already enough.

　　 So after finishing the oxygen concentrator, Chen Xin did not spend survival points to upgrade the oxygen concentrator, so he planned to hand it over to Mo Qingyan.

　　 put the finished oxygen generator aside, Chen Xin checked the time, and planned to have lunch first, take a break, and upgrade the door in the afternoon.

　　 Although it was just to confirm the upgrade, Chen Xin didn't plan to finish it eagerly.

　　 There is not much to do every day in the shelter itself. Chen Xin doesn't want to finish everything at once, and then become idle to play games.

　　 Of course, Chen Xin is not really nothing. The daily maintenance of the planting greenhouse cannot be saved.

　　 It’s just that as the crop enters the growing season, he only needs to ensure the water supply and light to maintain the operation of the planting greenhouse.

　　 As for the prevention and control of various diseases and insect pests that are common in general greenhouses or planting greenhouses, Chen Xin is naturally also very concerned.

　　 But I don’t know if the seeds I bought are good, or the planting greenhouse with upgraded system has black technology. At least so far, Chen Xin has not encountered any crop diseases and insect pests, and all the crops are growing very healthy.

　　The upland rice he planted has now entered the long-earing stage~IndoMTL.com~ From the young ears to the heading development, this process will last about 30 days. According to the growth cycle, these upland rice should enter in a few days At the fruiting stage, the ears are beginning to come out.

　　 I have to say that Chen Xin has never planted fields before. After he really started to grow dry rice, he realized that the so-called dry rice is planted twice a year because the environment and climate do not allow it.

　　If you are in a planting greenhouse, let alone two seasons a year, he can plant three seasons a year.

　　 In this way, Chen Xin discovered that after he expanded the planting greenhouse to the current 200 square meters, if he uses half of the land to grow upland rice, he can harvest 600 catties of rice a year. Although not a lot, it is a staple food. It is enough to eat at least Chen Xin's consumption.

　　 Even if Chen Xin upgrades the planting greenhouse again, he upgrades the current single-layer hydroponic planting to multi-layer hydroponic planting, all of which is used to grow vegetables, and the land is used to grow upland rice, his output can even be more affordable One or two people.

　　 As for the further upgrade, the fish-vegetable symbiosis cycle system and animal breeding are created. Simply raise some fish or poultry such as chickens and rabbits to maintain more people's survival needs.

　　 And more importantly, Chen Xin can now exchange vegetables for food from the SWAT team.

　　 Although the food in the shelters that Qin Lan brought before tastes uncomfortable in terms of taste or texture, at least it is food, it is edible, and it is still considered good food nowadays. .

　　 Speaking of food, after Chen Xin thought about it, he decided to eat the roasted mouse meat with mushrooms that Qin Lan brought at noon today. As for the canned meat that I bought from Mo Qingyan, I can keep it and eat it slowly.

　　 After all, rat meat can be eaten now, but pork is not sure when it will be eaten again.