Vol 2 Chapter 1061: To eat or to make oxygen?

Seeing that everyone here understands why the Infinite Gravity Group has the confidence to allow this behemoth to fly nearly 80 million kilometers in just 98 days. Such a combination of acceleration and propulsion is more than relying on inertia or ion thrusters. The aircraft is much faster!
While everyone was still discussing it, Jiang Tzuyu had already taken everyone to the last cabin that can be made public on the space station. She opened the cabin door and laughed: "I don’t need to say that everyone knows what this is for. Right?
Yes, this is our space oxygen bar for a long time in the future. Every day we have a fixed time to come here to absorb natural oxygen. Although our air circulation system is very powerful, synthetic air certainly does not have this natural energy. More comfortable!
And it can also play a role in relaxing the nerves. If we don’t see any green plants throughout the mission cycle, even those of us who have been rigorously trained and have very good psychological qualities will be easily anxious and emotionally easy. Out of control.
Except for the flowers, the rest are all vegetables. Growing vegetables, anyway, we Chinese people will never give up anywhere, after all, this is a talent!
Let’s just think about it. When we eat hot pot in space, it’s the fresh vegetables we grow ourselves, not the dehydrated vegetables in vacuum packaging. I think the taste and other aspects will be different. Right?
Think about it, is it more homely? And there are 3 floors in total, and the total vegetable area has reached 220 square meters. According to the traditional saying of our Huaxia people, it is planted on one-acre three-part land!
The planting area of ​​our cabin has exceeded the standard of 200 square meters for a three-quarter plot. This planting area is enough for us to eat all kinds of vegetables frequently when we perform tasks. Look at the watery cabbage and tomatoes. Tonight’s Eat them for hot pot!
It has been 4 months since this cabin was launched. Obviously, our artificial intelligence system and robots have taken care of them very well, so that we can eat ripe vegetables as soon as we arrive!
Of course, this cabin is also an experiment to explore the self-sustainability of spacecraft in the long-distance voyage in the future, not just for us to be able to eat fresh vegetables! "
"Will this cabin also provide enough oxygen for your astronauts?" A highlighted question was projected. Obviously there were many people asking this question, so the system automatically screened the first message.
Seeing this question, Jiang Ziyu smiled, she said with a smile: "Of course it is impossible! Even if we use the multi-layer planting technology to make perfect use of the entire cabin space, the oxygen provided by all the plants in this cabin, At most, it can only be used for the daily breathing of one of us.
Let me make a simple science popularization for everyone! Assuming that in a perfect situation, how many plants does a person need to survive in a confined space?
We know that most temperate plants only produce oxygen during the day. Plants will absorb oxygen and release carbon dioxide at night, so ideally, the lights in the room need to be turned on 24 hours a day, so that the plants will always produce oxygen. Of course, this also needs to take into account that the way plants work is different. .
On average, we humans need to breathe about 7-8 liters of air per minute. At the end of the day, about 10,000 to 11,000 liters of air are needed, but it will only consume 5% of the oxygen content. It consumes 550 liters of pure oxygen.
Generally, the amount of oxygen that a mature plant can produce per day is very limited. Take a potted flower in our laboratory for example. There are about 40 leaves on average, which can produce about 0.8 liters of pure oxygen per day.
If calculated according to this number, a total of about 687 plants are required for various calculations. For safety, we will round to 700.
In other words, there are at least 700 mature indoor plants in this confined space. They all grow in relatively humid areas. There must be light 24 hours a day, so that it is possible for a person to survive. Under perfect circumstances, you can even rely on this Breathe for a few years.
But in a longer time frame, you must start to worry about other changes in the room.
The bacteria in the soil absorb oxygen to produce carbon dioxide, and the carbon dioxide combines with the soil to react with the coagulated foundation to produce calcium carbonate and water. This means that part of the carbon dioxide is not absorbed by plants and is not converted into oxygen.
And even if half of the plants in our cabin are grown through hydroponics, there will always be some unexpected reactions and cycles, which will consume oxygen to dangerous levels. For example, plants will die of old age or disease. It is inevitable, and if this kind of situation occurs on a large scale, can you imagine its danger?
You can use the above figure to compare the number of plants in our cabin. Although the number of plants here is far more than 700, many vegetables do not have as many leaves as 40, and the oxygen production capacity of various plants It is also not the same.
So if one of us wants to breathe by the plants here, we have to inject oxygen into it. It can be seen that this cabin is also suitable for us to relax and provide us with fresh vegetables. Important features!
And although we carry a lot of oxygen~EbookFREE.me~ and we can also get more oxygen by electrolyzing water, but we usually use more than this oxygen, we also have another one specially used to make natural Of the oxygen compartment. "
Seeing that everyone was curious about this question, Jiang Tzuyu smiled and said: "Let's go, seeing your curiosity is so heavy, then I will take you to the oxygen preparation laboratory to have a look!"
After opening the closed door of the next compartment, she smiled at the camera and introduced: "Is it shocked by the dense green glass jars inside? This is our oxygen preparation laboratory, the green stuff in these glass jars? All are various cyanobacteria.
The cyanobacteria can be found everywhere on the earth. Their existence makes the earth what it is now, so their ability to produce oxygen is beyond doubt.
Biological reactions will form carbon-carbon bonds, using carbon dioxide as a raw material, using sunlight to provide energy to react, which is photosynthesis. Cyanobacteria have lived on the earth in this way for more than 3 billion years.
Its development enabled the entire earth's atmosphere to develop from an anaerobic state to an aerobic state, which gave birth to the evolution and development of all aerobic organisms. "
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