Chapter 1049

Seeing this, everyone knows why the infinite gravitation group has the strength to let this giant fly over 80 million kilometers in a short period of 98 days. Such a combination of accelerated propulsion is much faster than an aircraft propelled by inertia or ion thruster!

While everyone was still in the heat of discussion, Jiang Ziyu had already taken everyone to the last cabin of the space station that could be opened. She opened the door of the cabin and said with a smile, "I don't think you all know what this is for, do you?

yes, this is our space oxygen bar for a long time. Every day we have fixed time to absorb the natural oxygen. Although our air circulation system is awesome, the synthetic air is naturally not more natural and comfortable.

And it can also play a role in relaxing nerves. If we can't see any green plants in the whole task cycle, even those of us who have been strictly trained and have very good psychological quality will easily get anxious and lose control of their emotions.

In addition to the flowers, the rest of them are vegetables. Anyway, we Chinese people will not give up anywhere. After all, this is a gift!

Besides, if you think about it, when we eat hot pot in space, we will rinse fresh vegetables grown by ourselves instead of dehydrated vegetables in vacuum packaging. I think it will be different in taste and other aspects?

Do you think it's more homey to eat like this? And this is a total of three layers, the total planting area of vegetables has reached 220 square meters, with our traditional Chinese saying is to plant it a mu of land!

The planting area of our cabin has exceeded the standard of 200 square meters in three parts. This planting area is enough for us to often eat various vegetables when we carry out tasks. Look at the water-saving cabbages and tomatoes, we will eat them in the hotpot tonight!

It has been four months since the launch of this module. Obviously, our artificial intelligence system and robots take good care of them, so that we can eat mature vegetables as soon as we come here!

Of course, this cabin is also an experiment to explore the self-reliance of future spaceships on long-distance voyage, not just for us to eat fresh vegetables! "

"Can this cabin also provide enough oxygen for your astronauts?" A highlighted question is projected out. Obviously, there are many people asking this question, so the system automatically selects the first message to ask.

Seeing this, Jiang Ziyu laughed, and she said with a smile, "of course, this is impossible! Even if we make perfect use of the whole cabin space through multi-layer planting technology, the oxygen provided by all the plants in this cabin can only supply one of us for daily breathing at most.

Let me give you a simple science popularization! Suppose in a perfect situation, how many plants does a person need to live in a confined space?

We know that most temperate plants produce oxygen only during the day. Plants absorb oxygen and release carbon dioxide at night, so ideally, the lights in the room need to be on 24 hours a day so that plants can produce oxygen all the time, taking into account the fact that plants work in different ways.

On average, we need to breathe about 7-8 liters of air per minute. At the end of a day, we need about 10000 to 11000 liters of air, but only 5% of the oxygen content will be consumed. In other words, human beings consume 550 liters of pure oxygen a day.

Generally, the amount of oxygen that mature plants can produce every day is very limited. Take a pot of flowers in our laboratory for example. There are about 40 leaves on average, which can produce about 0.8 liters of pure oxygen every day.

If we calculate according to this figure, it will take about 687 plants in total. For the sake of safety, we will round it to 700.

That is to say, there are at least 700 mature indoor plants in this confined space. They all grow in relatively humid areas and must have light 24 hours a day. Only in this way can a person live, and even breathe for several years under perfect conditions.

But over a longer period of time, you have to start worrying about other changes in the room.

Bacteria in the soil absorb oxygen to produce carbon dioxide, which combines with soil and reacts with concrete 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.

Moreover, even if half of the plants in our cabin are planted in hydroponic mode, there will always be some unexpected reactions and cycles, which will consume oxygen to dangerous levels. For example, plants will die of old age and die of death. This situation is inevitable. If this situation occurs in a large area, we can 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 plants, the leaves of many vegetables are not as many as 40, and the oxygen production capacity of various plants is not the same.

So if one of us depends on the plants here to breathe, we will have to inject oxygen into it. Thus, this cabin is suitable for us to relax and provide us with fresh vegetables, which are equally important functions!And although we carry a lot of oxygen, and we can get more oxygen by electrolyzing water, we usually use more than this oxygen. We also have another cabin dedicated to making natural oxygen

Seeing that everyone was curious about this question, Jiang Ziyu said with a smile: "let's go. If you are so curious, I'll take you to the oxygen preparation laboratory to have a look."

After opening the closed door of the cabin next door, she introduced with a smile to the camera, "were you shocked by the dense green glass cans inside? This is our oxygen preparation laboratory. The green things in these glass jars are all kinds of cyanobacteria.

Cyanobacteria are almost everywhere on the earth. Their existence has made the earth what it is now, so their ability to produce oxygen is beyond doubt.

Biological reactions will form carbon carbon bonds, carbon dioxide as raw material, using sunlight to provide energy to react, this is photosynthesis. Cyanobacteria have been living on earth in this way for more than 3 billion years.

Its development makes the whole earth's atmosphere develop from anaerobic state to aerobic state, thus breeding the evolution and development of all aerobic organisms

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