On the morning of May 30th, Lu Chen got up and began to prepare to manufacture a biological oxygen generator, which is different from industrial oxygen production equipment, industrial oxygen production is the use of physical methods to produce oxygen, and biological oxygen generator is the use of algae to produce oxygen, we know that the oxygen on the planet is produced by the photosynthesis of plants, and plants and cyanobacteria can produce oxygen,

Tropical rainforests are called the lungs of the planet, but the organic matter produced by tropical rainforests is quickly consumed, producing large amounts of carbon dioxide, so the oxygen production of tropical rainforests is about the same as the consumption; The organic matter of plants in the cold zone will not be consumed in large quantities because of the cold, and the carbon dioxide released will be less, which will provide us with more oxygen, and the ocean, which occupies 70% of the surface of the planet, is distributed in which algae provide us with a large amount of oxygen, so the biological oxygen generator is to use the ability of algae to produce oxygen (personal understanding, if it is not right, it should be a parallel world, and the biological laws are different).

Subsequently, Lu Chen came to the workshop, first made a large box with a length, width and height of one meter, and then put five layers of partition board inside, and then a piece of glass was sealed on the partition board, and the cover of the water tank was a blower, and a sun lamp was hung on the inside, and then Lu Chen came out of the shelter to a river, fetched a basin of water, returned to the shelter and poured it into the box, and then poured the water inside the shelter, and then covered the cover, in which there was a pipe on each side of the upper part of the box, This is used to access the ventilation system of the shelter, while inputting air, while outing, the section of the air outlet is connected to the air conditioning ventilation system, through the fan while inhaling the air inside the shelter, while through the pipe into the air conditioning system and then blowing into the shelter, forming an internal small circulation, because they have no medium, they can only use the substances in the water for algae cultivation, so the water needs to be changed regularly.

Lu Chen used the nano core to calculate, if the algae in the biological oxygen generator are completely cultivated, then the oxygen needs inside a shelter for 10 people can be guaranteed, as long as the water is changed once a week, if you can make the medium yourself, then you can directly add the nutrient solution to it, and the water does not need to be changed.

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At the same time, when Lu Chen was making a biological oxygen concentrator, the official was also in action, with the efforts of manufacturing plants around the country, a large piece of equipment was transported to the shelter and began to be installed under the guidance of technical personnel, this equipment is a large-scale industrial oxygen production equipment manufactured by the government, after being transported into the shelter and installed, as long as the power is sufficient, then one such large equipment can ensure the oxygen supply of 50,000 people inside the shelter, after all, the oxygen content in the atmosphere is only reduced a little, There are also cold zone plants in charge of oxygen supply, and at the same time as installing this equipment, the government has also used resources to start cultivating cold-tolerant plants, and preparing for a large number of transplants around the shelter after the plants are successfully cultivated.

After all, the current daytime is not the kind of point where you can't see your fingers, it is equivalent to a cloudy day, but it is much darker than a cloudy day, which leads to a much shorter daytime every day, shorter photosynthesis of plants, coupled with lower temperatures, the death of many tropical plants, and large-scale forest fires caused by volcanic eruptions, which will lead to a decrease in oxygen content.

When the official installation of large-scale oxygen production equipment, it is also equipped with biological oxygen production equipment in various breeding bases, and they are all large-scale equipment, select some non-toxic and harmless algae for cultivation, through the cultivation and reproduction of algae, provide water and carbon dioxide, produce oxygen, when there are many algae, the excess algae is dried to make livestock feed for feeding, and animal manure can be made into fertilizer to fertilize the planting base, forming a circular chain to ensure a part of the ration and meat supply.

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Here, Lu Chen looked at the finished biological oxygen concentrator, and after turning on the power, he turned on the sun lamp and let the algae inside multiply on their own, and it was estimated that it would be almost usable on the day of the transaction.

Then Lu Chen boarded the forum, contacted Xu Jian, and asked him if he wanted oxygen production equipment, Xu Jian also knew about the decline in oxygen in the past few days, and was worried, but he didn't expect Lu Chen to make oxygen production equipment, and he was immediately overjoyed, and after some bargaining with Lu Chen, Xu Jian paid 1 ton of sand and gravel, 500kg of cement, and 1 ton of metal materials in exchange.

After the deal was confirmed, Lu Chen came to the workshop to finish the second biological oxygen concentrator, then looked at the nano core, and found that the high-energy battery had been deduced, Lu Chen began to check the high-energy battery deduced this time, and found that the deduced was a graphene lithium-ion battery, with the addition of graphene technology, the charging time is 1000 times faster than that of ordinary lithium-ion batteries, and the energy density is five times higher than the original lithium-ion battery.

"Sure enough, when it was suggested that only two hundred points of energy were needed, I should have thought that there would not be such a big improvement."

Lu Chen felt that he should be mentally prepared when he started to deduce at that time, as long as two hundred points, but at present, the graphene battery is enough, after all, he is only active in this city, and he can study it again when he has enough energy in the future.

Subsequently, Lu Chen looked at the manufacturing technology of the battery and found that there are many equipment in the following introduction, including the initial input of raw materials, to the final battery packaging, and the technical principles and equipment have a detailed introduction, including the manufacturing technology of the production equipment.

Lu Chen continued to look and found that nanocores could be used to make it, and if you directly use energy, it would take about 100 points of energy to make a battery, Lu Chen looked at the data

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Graphene lithium-ion batteries

Crafting Requirements: 100 energy

Manufacturing time: 15 minutes

Dimensions: length 20cm, width 10cm, thickness 5cm

Weight: 5kg

Energy density: 100 degrees

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Lu Chen found that this density is still okay, after all, the battery of Tesla's electric car has almost 60 to 70 degrees of electricity, the energy density of this battery is larger than this, and the volume has also decreased, and the charging speed is fast, Lu Chen estimates that the power of this battery is enough for more than five hours of activity in protective clothing, and when the time comes, it will be enough for his own activities for a day, and the weight of the two batteries is only 20 catties, which is still drizzle in terms of the ability of the mechanical assistance device in the protective suit

Lu Chen saw that the nano core already had more than 400 points of energy, and immediately used 100 points of energy to make a battery, fifteen minutes later, Lu Chen looked at the freshly baked graphene battery in his hand and felt the greatness of technology, such a small battery can store so much power, it is incredible.

Then Lu Chen began to use the workshop equipment and nano core to manufacture protective clothing, using mechanical assistance devices as the skeleton, plus high-strength carbon fiber fabrics, to create the main body of the protective clothing, and then added a device on the side of the protective clothing, which can be used to store small oxygen cylinders, and also added a micro oxygen generator at the waist of the back of the protective clothing, using physical adsorption to provide oxygen, as long as the power is sufficient, the supply of oxygen can be guaranteed, and the oxygen cylinders on the side are used as a backup measure. In case you can't return to the shelter in time because of some delays, then these two oxygen cylinders are a lifesaver to ensure your survival.

The batteries are located on the back of the suit and are detachable and modular, so that if the battery runs out, it can be removed and a second battery can be installed.

Finally, the position of the head mask, after Lu Chen manufactured the head mask, he added a night vision function, and a display board function, this display board can see the overall status of the protective clothing in real time, including the pressure in the protective clothing, oxygen content, temperature, etc., to avoid accidents, and finally, after Lu Chen completed the manufacturing, he spent a total of 150 points of energy and several materials, and finally spent another 50 points of energy to optimize the overall protective clothing, In the end, what appeared in front of Lu Chen's eyes was similar to the protective clothing in the wandering planet.

However, Lu Chen's is more advanced than in the movie, first of all, the mechanical assistance can make Lu Chen lift heavier objects, and the ultimate force has reached 500kg, and secondly, the built-in buffer device greatly reduces the damage of falling from a height, and the protective fabric is a high-strength material, so it is difficult to cut through ordinary knives.

In the end, Lu Chen looked at the remaining 100 points of energy, gritted his teeth, and made a battery again, and then the two batteries were installed on the protective suit, and then Lu Chen walked out of the shelter in the protective suit, and began to experiment with the performance of the protective suit around the shelter,

I saw that on a highway, a red figure was moving rapidly, the speed reached 50 kilometers per hour, and from time to time it jumped, a jump can have a height of four or five meters, sometimes there is a car on the side of the road, you can see this figure directly overturned the car, looking very easy.

This figure is our protagonist Lu Chen, after more than an hour of high-intensity testing, Lu Chen returned to the shelter, looking at the remaining power displayed by the protective clothing is only 70%, if the previous exercise intensity, it is estimated that it can be used for more than three hours, so this protective clothing can maintain 10 hours of survival in normal conditions, but once it is in high-intensity operation, it can only support 4 hours, so Lu Chen is wondering if to add two more batteries, after all, this battery is not large, It's okay to put four pieces in the back position.

Then Lu Chen thought that when he was testing just now, when he was moving fast, a lot of surrounding information could not be processed, and sometimes when an obstacle suddenly appeared on the side of the road, it would be too late to reflect, so he had to build a computer.

"But not only on the protective clothing, but also in other parts of the shelter can be controlled by computers, and it is best to use artificial intelligence, but with my current knowledge reserves, I can't get artificial intelligence, but the general intelligent program is still no problem, and I have nanocores, which can make carbon-based chips, and it will be faster than silicon-based chips."

Thinking of this, Lu Chen looked at the time and saw that it was not too early, and he was ready to rest first and start his research tomorrow.