Hand rubbing nuclear fusion live in the wilderness

Chapter 467 How to use thermal energy in controlled nuclear fusion to generate electricity

Chapter 470: How to use thermal energy in controlled nuclear fusion to generate electricity
The audience in the live broadcast room is interested, and experts from various countries are even more interested.

An engine that has something to do with gravity, what kind of engine?And what technology is used?What are the theories and principles behind it?
These things scratch the ear and the heart are generally unstoppable.

But this time, no matter how they asked rhythmically in the live broadcast room, the other party just didn't say anything.

This is a pain in the ass.

In the simulation space, Han Yuan smiled and shook his head watching the various bullet screens, and turned his attention to the assembly of the main mirror.

The main mirror assembled now is only in a rudimentary form, and it is for debugging.

This infrared space telescope is assembled from eighteen pieces of beryllium-iridium alloy mirrors, which are somewhat similar in shape to the Webb telescope.

In fact, he actually designed this infrared telescope with reference to the Webb telescope.

It's just that it is more powerful than the Webb telescope in terms of various parameters and performance.

Because the processing equipment and materials in his hands are better.

For example, the material used for the mirror, Weber is beryllium metal, but he uses beryllium-iridium alloy, the latter is better than the former in terms of hardness and thermal expansion coefficient.

In terms of grinding and polishing technology, Weber has a polishing roughness of [-] nanometers, and he uses a [-]-nanometer level, and the third-level steering mirror and fine steering mirror are even lower, and the surface roughness can reach the [-]-nanometer level.

In addition, there are mirror thermal energy sensing modules and near-Earth observation modules that are not equipped on the Webb telescope, and he has also equipped them.

It can be said that for this space telescope, he piled his technology to the top of the pyramid.

Basically, everything that can be used is piled up.

And they are all the best ones.

The assembled main mirror needs to be debugged. It is assembled from 18-element mirrors, so there must be gaps between the mirrors.

What Won has to do is to eliminate these gaps as much as possible during the debugging process, and make sure that the infrared light reflected by the primary mirror is all concentrated on the secondary mirror.

These two steps are the key debugging steps of the primary mirror.

The narrower the gap between the mirrors, the clearer the sea of ​​stars it can capture.

Whether the infrared light from the primary mirror can be fully reflected to the secondary mirror is related to the curvature of the mirror surface.

This is the purpose of polishing the mirror surface into a slight curvature before.

The radian of the mirror surface is a problem in detail. Even if he entered every piece of data into the computer through mathematical calculations, it could not be perfect.

After all, data accuracy is just data accuracy, and in the process of grinding and polishing, there may be mirror radian errors due to some other problems, such as the wear of the polishing disc, thermal errors and other issues.

Although it is known from previous tests that these errors are not very large, they still need to be corrected.

The basis for the correction is the detailed data obtained after the assembly test.

This step doesn't even require him to do the calculations himself. The artificial intelligence in the central computer can easily calculate the data that needs to be corrected through the arc error in each place, and the calculation speed is much faster than his manual calculation.

After observing the assembly and testing process of the main mirror, Han Yuan turned around and left the CNC factory, and rode his beloved little electric donkey to the controllable nuclear fusion park.

It's been more than two months, and it's time for him to see how the building is doing here. Although he can see the changes through the monitoring data every day, what he sees from the monitoring is still not worth coming to see with his own eyes. .

Soon, in the silky rolling of the small eDonkey, South Korean won once again came to the controllable nuclear fusion park.

Upon seeing it, the audience in the live broadcast room became amazed.

Compared with the scene of a busy construction site two months ago, after two months, most of the buildings in this construction park have basically completed construction.

[I haven't seen you for two months, this has changed a lot. 】

[Anchor, are you sure you came to the right place? 】

[The last time I saw this park, all the buildings were still under construction, but this time Nima has already been completed! 】

[Not only is the construction completed, but even the surrounding wall on the edge of the park has been built. The construction efficiency is impressive. 】

[Not to mention the fence, the turf on the edge of the fence has already been paved, and it is still green, and it looks like it has been sprinkled with gold. 】

[Speaking of Jin Kela, I think of the anchor's vegetable garden and granary. The vegetable garden blooms and bears fruit all year round, and the granary is full of various grains. I am so envious.I would like to ask, what kind of fertilizer do you use as the anchor, can you live broadcast how to configure it?I am so envious. 】

[Upstairs, the fertilizer was broadcast live a long time ago. I remember that the anchor made it during the first or second live broadcast. You can go to the previous recordings and broadcasts, and it is very easy to make. 】

[One thing to say, the building in the middle looks really tall, the height, at least a hundred meters, right? 】

[What kind of eyes do you have? This can be seen as hundreds of meters?Up to 30 meters. 】

[30 meters, it is estimated that even the controllable nuclear fusion reactor can't fit, what a mess. 】

Han Yuan smiled and said, "The height of the reactor building in the central area is 56 meters above ground. If the underground space of nearly 20 meters underground is included, its total height is 77 meters."

"The reason why it is built so high has something to do with its power generation method."

After a pause, Han Yuan came to the reactor building in the central area, looking up at the huge concrete wall.

"Everyone is very interested in controlled nuclear fusion, and we all know that controlled nuclear fusion can produce tens of millions of degrees of high temperature."

"So do you know how to convert these high temperatures into electricity?"

Looking at the wall of the reactor building, Han Yuan suddenly pulled the camera to ask a question.

For this question, the audience who have followed him for so long still have some understanding.

As a result, various power generation methods such as boiling water, turbine units, and magnetic fluid power generation have appeared on the barrage.

Looking at these bullet screens, Han Yuan smiled and asked again: "These power generation methods are too general."

"It can be said that how to use the ultra-high temperature of a controllable nuclear fusion reactor is actually quite difficult."

"First of all, you can't directly export the ultra-high temperature plasma in the controllable nuclear fusion reactor to generate electricity, which will destroy the balance inside and cause the reactor to go out quickly."

"Even if it doesn't extinguish the reactor, it will cause the external magnetic field control system to lose control of the plasma turbulence inside."

"So it is not feasible to directly use or export the ultra-high temperature plasma in a controllable nuclear fusion reactor for power generation."

"In addition, using ultra-high temperature nuclear waste and neutron irradiation to generate electricity involves issues related to the first wall material."

Hearing this, the audience and experts in the live broadcast room immediately became interested, sat up straight and listened carefully with their ears up.

"In a controllable nuclear fusion reactor, the fusion reaction of atomic nuclei is going on all the time."

"In the reaction process of deuterium-tritium fusion, although a large amount of energy is produced, more than 70% of the energy produced is dangerous neutron radiation."

"So how to control neutrons to hit Li to make tritium self-sustaining and use it is the most troublesome thing in the whole controllable nuclear fusion."

"Because these neutrons not only take away most of the energy, but also cause a lot of trouble for radiation protection."

After a pause, Han Yuan continued: "We have thought of many ways to solve this problem."

"For example, use a material with high radiation resistance and stable performance as the material for the first wall, which can effectively prevent neutron radiation from damaging external equipment."

"But in doing so, a new problem arises."

"That is, even the most stable material will produce surface sputtering when it is irradiated by neutrons, allowing the heavy elements in the material to enter the plasma turbulence."

"These heavy elements sputtered from the first wall material not only cannot generate energy for fusion, but also dilute the concentration of deuterium-tritium plasma turbulence, and lose heat through thermal radiation, making subsequent deuterium-tritium fusion more difficult."

"If we solve this problem, at first we thought about filtering out the heavy elements through a filter, such as a mass spectrometer."

"After all, the movement of a charged object will be deflected in a magnetic field. The more charges an object carries, the stronger the deflection force, and the greater the mass, the greater its inertia, and the stronger its ability to resist deflection."

"So, it is often the charge/mass ratio that determines the deflection trajectory. In this regard, heavy elements will have a greater mass than the turbulent flow of deuterium-tritium plasma, so there is a basis for exclusion."

"However, this would necessitate adding a divertor at the bottom of the reactor."

"The appearance of the divertor will cause the magnetic field control system at the bottom of the reactor to gradually lose control of the internal plasma turbulence."

"Of course, the process of getting out of control did not happen at the beginning, it actually happened under the erosion of plasma turbulence slowly."

"It's like flooding eroding a levee."

"And once the plasma turbulence gets out of control, even if it's only a small part, you can imagine the consequences."

Hearing this, the heartbeat of the experts from the ITER International Thermonuclear Experimental Reactor Program Laboratory squatting in the live broadcast room suddenly missed half a beat.

Because the method that the person in the live broadcast room said is exactly the way they are currently talking about.

No matter the material of the first wall, and how to solve the influence of heavy elements sputtered from the first wall material on the plasma turbulence.

It can be said that they are almost exactly the same.

That's exactly what they do.

But now, the anchor in front of him can be said to have directly sentenced this road to death.

No one knows better than they what happens when plasma turbulence in a tokamak fusion plant gets out of control.

Even if it's just a small part.

If the plasma turbulence in the tokamak nuclear fusion device is out of control, then what they have built is not controllable nuclear fusion, but a fusion bomb.

The power can damage the tokamak nuclear fusion device at the slightest level, or blow up the entire reactor building to the sky.

Moreover, the anchor also specifically pointed out that this out-of-control process will not happen immediately, but will appear over time.

From this point of view, they haven't discovered this problem yet because they haven't had enough time to activate the tokamak nuclear fusion device for fusion.

This made the experts in the ITER International Thermonuclear Experimental Reactor Project Laboratory feel inexplicably relieved.

If they discover this problem by themselves, they may destroy the entire tokamak nuclear fusion device. If it is serious, it may cause certain casualties.

The anchor's reminder can be said to be that the ITER International Thermonuclear Experimental Reactor project avoided a super big pit, which made them happy, but it seemed to directly kill the road of the tokamak nuclear fusion device.

This made them very unwilling. Could it be that the road of tokamak is really impossible?
In the simulation space, while explaining how to control the use of seed irradiation, Han Yuan entered the nuclear reactor building and took the repaired elevator to the top floor
Standing in the corridor on the top floor, Han Yuan leaned on the handrail and looked at the huge hollow in the central area.

Looking down from a height of more than 70 meters, the huge drop almost didn't scare the hearts of viewers with fear of heights in the live broadcast room.

[Damn it, it's so high!Almost scared my old lady to death! 】

【Tsk tsk, if this falls, won't it be smashed into meat?Anchor, are you not afraid? 】

【I'm a person with fear of heights, I'm going to die Σ(°△°|||)︴, I'll wipe it!so high! Σ() woo woo woo woo woo... Mom, save me! (╥╯﹏╰╥)】

[I was so scared that I immediately supported my penis, relying on its support to keep it from falling. 】

[I was so scared that I ejaculated (=ω=)]

[Is it so beautiful upstairs? 】

[I regret turning on this live broadcast while I was in the toilet,... Now Chrysanthemum is so scared that I can't pull it out. 】

【I was lying on the bed, my legs were so soft and sore. 】

【Stop driving! ! ! ! 】

【Look!It doesn't matter, but the obsessive-compulsive disorder patient said: Why don't you fall down, anchor?How about I go up and give it a push? 】

[Fear of heights is rubbish, the anchor should continue to talk about controllable nuclear fusion, I am more interested in this. 】

Han Yuan glanced at the barrage, ignored the barrage, and continued: "Since the neutron irradiation cannot be controlled through the first wall material, we thought of another way."

"That is to control other radiation, while neutron radiation allows it to pass through the past. Behind the first wall, another Li layer is arranged to solve the problem of tritium's self-sustainability."

"In this way, the problem of damage to the material of the first wall can be solved, and the self-sustainment of tritium will not be affected. In addition, the energy brought out by neutron irradiation can also be used."

"This idea is very good. After the theory is constructed, it is to find a magnetic field control system that can control other radiation and allow neutron radiation to pass through without affecting the external magnetic field."

"As for the material to solve this problem, I have talked about it many times before, and everyone knows what it is."

(End of this chapter)