Chapter 783 Hudong Shipyard’s trump card
After all the interviews, Chang Haonan finally decided to recruit Li Yabo under his name.
Firstly, after confirming the situation with Tang Lintian, I found that the young man was indeed very capable in all aspects, and secondly, he did have a good temper towards Chang Haonan.
Recruiting students is nothing more than three points.
Talent, ability, character.
No problem, the rest is just a matter of chance.
Of course, Yao Mengna was not without gains.
In the subsequent interview, she had a very interesting chat with a girl named Wan Chuanqing.
The latter majored in theoretical physics at Jinling University. Although he did not publish articles as an undergraduate like Li Yabo, his average score in professional courses was as high as a terrifying 97.3 points, and he also won the first prize in the national physics competition. It is only one step away from entering the International Olympiad training team.
Logically speaking, students with such great potential go to a strong science school like Jinling University. They usually either go abroad for further studies or continue their graduate studies at this school.
But Wan Chuanqing wanted to switch from science to engineering and enter a direction closer to application - in fact, this is also the choice of a large number of science majors when they study for graduate school.
That’s why I want to apply for Beijing Airlines, which has become famous in recent years.
As a new instructor, Yao Mengna also hopes that she can make some progress in theoretical basics.
So the needs of the two complemented each other perfectly, and they hit it off.
In addition to these two people, two other students expressed their willingness to join the Torch Laboratory as students of other tutors in the same research group without being recruited by Chang Haonan himself.
Chang Haonan kept their resumes and application materials, and planned to let Liu Fangping and Lei Zhixing make their own decisions after they returned from their business trip to Shanghai.
Of course, during the waiting time, these students can still continue to contact other schools and tutors.
Two-way choice.
As long as it is not finalized, you can keep a spare tire.
Although there were only five people, the interview lasted almost the whole morning.
When the two finally made a decision after some discussion, it was already close to lunch time.
"I didn't expect that..."
Chang Haonan got up early and rushed to school, stood up, moved his body, and made various joints make a crackling sound:< br>
“I initially thought that with a new subject group like ours and new teachers, students would be more worried when making the final decision...”
His own extremely dazzling performance Experience, of course, can attract many people to submit their resumes on impulse.
But as we all know, a good researcher is not necessarily a good mentor.
Therefore, Chang Haonan thought that after a period of "cooling off period", the students' enthusiasm would subside.
However, it turned out not to be.
Of the five people who came for the interview, four said that as long as they could join Torch Lab, it would be no problem to change their mentor.
This ratio is quite exaggerated.
"That's why you don't eat minced meat."
Yao Mengna also stood up, gathered the scattered information on the table and put it into her bag, and then simply tied her hair into a long ponytail:
< br>“Many research groups are worried about having no money and no projects, and graduate students cannot graduate with results. It’s a good thing for us. We have a school-enterprise alliance, which guarantees at least several million in scientific research funding every year, plus the land and land specially approved by the capital. As for the special funds for equipment purchase and site construction, anyone can see that there will be no shortage of money or resources for at least a few years. Even the academician's research team may not be so generous."
" What's more, the school-enterprise alliance means that there are many ways to find employment after graduation. As a teacher, can you still watch your students starve to death? "
"With this condition, let alone just let it happen? If they change their tutor, even if they don’t have a tutor, as long as they can graduate, there will be countless people willing to come.”
After being explained by Yao Mengna, Chang Haonan thought for a while and felt that this was really the case.
After all, there are many tutors who only care about recruiting students and not cultivating them, and even just throw research topics to students.
In other words, even if there is no guidance from a tutor, it will most likely not affect graduation.
But if you don’t even have the topic and funding, then there is really no hope.
……
Liu Fangping and Lei Zhixing did not let Chang Haonan wait too long.
A few days after the interview, the two returned to Beijing Airlines before November. "These are the resumes of the two students I mentioned to you before. Take a closer look when you get back."
Chang Haonan took out two envelopes from the drawer and put them in the office On the table:
"Teacher Yao and I have conducted interviews a few days ago and found no major problems. If you still want to know anything else, you can call us and ask in detail."
Recruiting students was the first time for both of them as older girls to get on the sedan chair, so they were not able to adapt to the change of status for a while, so they just collected the two envelopes with some confusion.
Chang Haonan was not in a hurry to urge the two of them to make a decision. After all, keeping these two files was just a casual thing.
Even if you miss it, you can wait for the postgraduate entrance examination results to come out and then choose from the students who entered the interview.
Therefore, he changed the subject and went directly to the topic:
"Tell me about what you learned in Hudong during this period."
Lei Zhixing and Liu Fangping looked at each other, and it was the former who spoke first:
“In a cargo tank using the Gas-Transport storage system, the bulkhead insulation layer is a five-layer structure. From the inside to the outside, there are main Membrane 0.7mm Invar plate, main wooden box filled with perlite powder about 10cm thick, secondary membrane 0.7mm Invar plate, secondary wooden box filled with perlite powder about 15cm thick, and a resin layer about 2-3mm thick."
“Because there are two layers of Invar steel plates, compared to the Technigaz system where only the innermost layer uses Invar steel, which is the technical route chosen by Samsung Offshore Engineering, the thickness of the entire cabin is , weight and cost are greater. This is a limitation of the physical structure and there is no way to improve it."
"..."
Chang Haonan listened to Lei Zhixing's description. Thinking about possible solutions.
As a metal layer with a very low thickness, the invar steel layer obviously does not have the ability to insulate, but it can bring better air tightness.
In this way, the performance of the Gas-Transport system and the Technigaz system in terms of transportation dissipation is basically the same.
However, the bulkhead of the latter is thinner and lighter. On the premise of transporting the same amount of LNG, the displacement of the ship can be made smaller and the cost is lower. This is good for ship owners. Huge advantage.
The structural strength redundancy brought by the double-layer invar steel of the Gas-Transport system can also be made up for by Samsung Offshore's more mature shipbuilding technology.
At least make up for part of it.
It's a bit like a large airliner.
In an era when aviation technology was less developed, transoceanic passenger aircraft were required to have four engines to provide sufficient power backup to prevent the aircraft from crashing due to engine failure during flight.
However, with the development of aviation technology, twin-engine passenger aircraft were later allowed to fly transoceanic routes.
Although the reliability of two engines is still lower than that of four engines, the slight safety gap is no longer enough to make up for the huge cost increase brought by two more engines.
Therefore, by the time before Chang Haonan was reborn, wide-body twin-engine passenger aircraft like the Airbus A350 and Boeing 787 had almost completely replaced giants like the Boeing 747 and Airbus A380.
However, for some models that require absolute reliability, such as VIP aircraft, nuclear warfare command aircraft, and large tankers, the four-engine platform still has its place.
In the field of LNG ship cargo tank technology, the Gas-Transport system is equivalent to a four-engine aircraft, and the Technigaz system is equivalent to a two-engine aircraft.
If the former wants to prove the significance of its existence, it must find ways to learn from its strengths and offset its weaknesses -
On the one hand, it must reduce the cost of use as much as possible, and on the other hand, it must find ways to leverage its own strengths.
When you think of this level, the answer is readily apparent.
"My idea is."
After Lei Zhixing introduced the specific situation, Chang Haonan spoke almost immediately:
"No matter what, the storage container cannot be completely insulated. Therefore, liquefied natural gas will inevitably evaporate and dissipate during transportation. On current LNG ships, this part of the gas is either directly emptied or burned. In better cases, part of it can be recovered and entered into the power system, but the gas in the power system The dosage is too small, and it is impossible to eat all the boil-off gas (BOG), and a considerable part will still be lost.”
“Then, we can integrate a complete set of boil-off gas re-liquefaction system inside the cargo tank bulkhead system. , This can minimize or even close to completely eliminating evaporation losses during transportation, achieving higher transportation efficiency than the Technigaz system. "
"Of course, the Technigaz system has better performance in terms of hull specifications, that is, construction costs. The advantage still exists, but after making some compensation for the use cost, we should be able to get at least some guaranteed orders from the GTT Group.”
Listening to Chang Haonan's thoughts, Lei Zhixing and Liu Fangping didn't even know how to answer for a while.
After a while, the latter said:
“Professor Chang, on LNG ships, the bulkheads of the cargo tanks must be taken into consideration in the overall structural safety design of the entire ship. If you rush to make a fuss here...I'm afraid the risk is not small..."
Chang Haonan just nodded lightly:
"Of course there are risks, but Gas-Transport is inherently better than Technigaz. Having excess security redundancy is equivalent to converting part of the security that exceeds user needs into economic benefits. In fact, this is the main reason why the Technigaz system currently has an advantage.”
"Since Hudong has already bet on Gas-Transport and has no way to turn around, we can only follow this idea at present."
(End of this chapter)