"Multi-layer composite? The ceramic layer is used as a buffer, and the carbon nanomaterials are used for rapid heat dissipation......"

The nuclear fusion experts and materials experts present were all in deep thought, this plan seems to be feasible.

"It's still a cliché, the higher the temperature, the more active the substance, and the first inner wall needs to face the plasma, and the operating temperature is 2000 to 3000, which is completely different from the less than 1000 degrees Celsius that has been blocked and weakened by Max Planck Labs.

Whether the higher temperature will cause the carbon nanomaterials to be more active and react with hydrogen will need to be determined through practical experiments. ”

A materials expert raised the question, adding ceramic materials to form a composite structure for temperature buffer, carbon nanomaterials have met the conditions for the application of carbon nanomaterials to the first inner wall, and it can even be said that compared with other materials in the world, carbon nanomaterials are the most suitable.

High temperature resistance, relatively good neutron penetration, thermal conductivity against the sky, anti-neutron irradiation resistance, coupled with the self-repair of the material itself, the little neutron irradiation can be completed by its own repair.

However, the phenomenon of hydrocarbon incompatibility reaction to generate methane, which must be determined by actual tests, if the increase in working temperature leads to this phenomenon, it is undoubtedly unqualified for carbon nanomaterials to do the first inner wall.

"Even if this phenomenon still exists, wouldn't it be okay to use the nano-ceramic material as the first inner wall material and prevent the discrete hydrogen elements in the plasma from coming into contact with the carbon nanomaterial layer?"

Zhang Qing raised the notebook in his hand and said confidently: "I don't know if you have any impression of the comb-like structure of the heat dissipation component of the computer cooling system.

Our industrial level is not up to the level of weaving ceramic materials as silk as in Germany, but it is still no problem to process ceramic materials into properties like tight combs.

The ceramic material is processed into a comb-like structure, and the carbon nanomaterial is reversely processed into an inverted shape, and the two are merged to form a tight fit between the materials and the materials, so that the carbon nanomaterials with good thermal conductivity can continuously take away the energy on the ceramic materials.

For the thermal conductivity of carbon nanomaterials, the thermal conductivity of ceramic materials, and the high temperature resistance coefficient of ceramic materials, Professor Lin and I have just built a mathematical model for analysis.

Through data modeling, as long as the thickness of the nano-ceramic material layer facing the plasma is less than 0.87 cm, and the zigzag structure of the rear comb can expand the surface area of heat dissipation by more than 6.8 times, then the operating temperature of the ceramic material layer can be stably maintained between 2200 and 2400 degrees Celsius by relying on the tightly bonded carbon nanomaterials to help dissipate heat.

I think there is still a long way to go from the melting point of nano-ceramic materials, and if the thickness of the nano-ceramic layer facing the plasma is reduced and the surface area of heat dissipation continues to be increased, then this temperature can be pressed down a little further.

According to the current material technology and the performance of nano-ceramics, the discrete hydrogen element of the plasma is not allowed to penetrate through the ceramic layer and react with the carbon nanomaterials behind it, and the thickness of this should not be 0.2 cm.

The requirement of 6.8 times the surface area for heat dissipation is even simpler, and the structure is designed with several rows of combs, not to mention 6.8 times and 68 times. ”

After Zhang Qing finished speaking, the material experts and nuclear fusion experts present couldn't help but swallow their saliva, and their eyes seemed to be as if the dawn of nuclear fusion was already in front of them.

Looking at Zhang Qing, who was flying with confidence, the corners of Lu Yi's mouth couldn't help but show a smile, and it felt like his home-raised scientist had finally grown up.

"Professor Zhang Qing, the discrete deuterium nuclei, tritium nuclei, and helium nuclei generated by the reaction in the plasma will cause irradiant corrosion and low-energy bombardment of the first inner wall material.

The first expert sitting opposite Zhang Qing and Lu Yi stopped the pen in his hand and said with a solemn expression: "If the ceramic material is really used as the first inner wall, once the reactor reaches the commercial energy density, it will take about 1 to 2 years for the surface of the ceramic material to be corroded and blistered, and the fragments will fall off into the plasma and cause a safety accident." ”

"Ahem, ahem!"

Lu Yi, who originally thought that the structural plan conceived by Zhang Qing had some major flaws, was accidentally choked when he heard this, and the other people in the conference hall also reacted, and couldn't help but smile on their faces.

Just now, we were discussing how to solve the difficulties encountered in the test reactor, but now that we are considering commercial applications, this is too advanced.

"Professor Huang, I think a fusion reactor that can operate 24 hours a day for more than a year has commercial value."

Lu Yi calmed down his cough and said: "Of course, as a nuclear reactor, it is indeed a bit unreasonable to shut down the reactor for core maintenance after only operating for more than a year.

The only solution to this problem is to increase the strength of the confined magnetic field, and the strength of the magnetic field increases, and the deuterium nuclei, tritium nuclei, and the helium nuclei formed by the reaction discretely cross the edge of the magnetic field, and the intensity and quantity of radiation on the first inner wall will decrease exponentially. ”

"Professor Lu, if you are looking for an industrial preparation method of superconducting graphene wire to be applied to the stellarator, how long can this time be reached?"

At this time, except for Lu Yi who spoke when he came in, the old man who had been silent suddenly asked.

Since he planned to concentrate on the commercialization process of nuclear fusion, the old man who had taken the rare time to listen to this meeting still had a certain understanding of the recent movements of Lu Yi's laboratory.

As Lu Yi said, in the hearts of the elderly, it is indeed a bit inappropriate for a nuclear reactor to be maintained after more than a year of operation.

After all, this kind of project has a core maintenance of at least ten days and half a month, and the subsequent real commercial application, the nuclear fusion reactor must shoulder a huge power generation task, so that it will be stopped for half a month for more than a year, which is a great pressure on the power grid regulation.

"According to the performance of superconducting graphene, if the copper oxide superconducting coil on tomorrow's stellar simulator is replaced with a superconducting graphene wire, the persistence time of the first inner wall ceramic material can be conservatively estimated to be increased to more than 4 years."

Lu Yi turned his head and communicated with Lin Meng, and after getting accurate data from the mathematician, he replied with a serious face.

"Okay."

The old man nodded, stood up and said: "I still have a meeting, and the next meeting will be presided over by Minister Hu, and everyone can put forward any difficulties in the nuclear fusion project, and if there is any need for the support and help of the state, they can put it forward, and do their best to realize the commercial application of nuclear fusion before other countries." ”

"Yes."

Lu Yi and the others and Academician Wang stood up and responded, I don't know if it was Lu Yi's delusion, he felt that the old man's pace now seemed to be brisker than what he saw on the news.

Is this happy?