Chapter 274 Photovoltaics and Ecology
As time comes, it is the end of January.
The Spring Festival in 2028 is almost here.
Although Hailufeng Company has started to have a holiday, considering that some industries cannot stop work, it adopts a take-off method.
The integrated project of Xiaozhushan water pumping energy storage and aquaculture near Magong Town was also officially passed the acceptance in January this year and is ready to start full operation after the Spring Festival.
At the same time, the Shanmei Sea Airport project applied for construction by Hailufeng Company has also obtained approval for the location outside the sea of Nanhu Village, Magong Town.
The airport is on the sea just south of Magong Town, 300 meters away from the coast, 2.3 kilometers from north to south, 1.2 kilometers from east to west, and a total area of about 2.76 million square meters, which is about 4,144 acres.
The reason why the airport is not built in the Pearl River Delta is that the airports and ports in the Pearl River Delta are too dense, and the airship airport requires a very large area.
Whether it is land acquisition and demolition, or land reclamation, it is quite troublesome. As a low-altitude aircraft, airships have now begun to set up special departments to manage the country's medium and low-altitude airspace and facilitate the promotion of the airship industry, it is still very troublesome to pass the approval of airships over big cities.
The main trouble is that the big cities are densely populated and the buildings are very high, so many people still have doubts about hydrogen airships.
Therefore, in the current plan, the route of the airship should not overlap with the aircraft as much as possible, especially within ten kilometers of each airport, the airship is not allowed to approach; and the straight-line distance between the airship airport and the aircraft airport cannot be less than fifty kilometers.
It is also stipulated that on busy routes, airship airports should be avoided as much as possible.
These regulations are to avoid too intensive contact between the two aviation systems, which leads to increased management difficulties.
So similar to the Pearl River Delta, Yangtze River Delta, and Beijing-Tianjin areas, these areas have no way to build airports, at least there is no need to think about it in a short period of time.
On the contrary, airship airports can be built around these core economic zones.
After all, the transportation cost of airships is very low, although it still needs to be connected through road transportation, which is actually something that many companies that need transportation services can consider.
For example, the industrial products of Pengcheng, Echeng and Guanshi are transported to Shanmei by road, and then transported to other airports across the country through Shanmei's Magong Airport, which can save a lot of transportation costs.
Of course, another purpose of Hailufeng Company in building Magong Airport on the sea is to provide part of the logistics flow of the maritime port.
After all, the speed of transporting goods from the ports in the Pearl River Delta to Shanmeima Palace Airport is actually relatively fast. This plan is to prevent road transportation from being too crowded, and it is too late to build a new road for a while, and the airship itself cannot enter the Pearl River Delta region, so it is necessary to consider using offshore sea transportation to connect.
As for air ports built on the sea, as long as the airport and sea port areas are planned in advance, the two transportation systems can be seamlessly connected.
With all the value of extinguishing the land, this airport is not only the function of a sea-air integrated port, but also a large indoor aquaculture base underground.
No mistake, this airport artificial island is hollow.
Compared with the high requirements for runways from the airport, the airport itself does not need to consider aircraft takeoff and landing, so its overall strength does not need to be too high.
This hollow design, on the one hand, is to reduce the amount of land reclamation, and on the other hand, it can make full use of land resources.
After all, this is a site with an area of 4144 acres. Although dams and load-bearing columns are required to be built below, at least 3,500 acres of breeding area will be obtained.
…
It is located inside the airship manufacturing base in the High-tech Industrial Park of Minqin County.
Blue Whale Airship and Minqin Group are cooperating with the development of a super-large special airship.
Because the structure of this airship is different from that of Blue Whale, the construction of the docks of Blue Whale Type 1 and Type 2 airships cannot be built, and can only be built in the construction of Blue Whale Type 3 airship docks.
Hou Xin, the technical executive of Blue Whale Airship Company, is discussing this new airship with Li Yunpeng, the technical director of the project.
Currently, Blue Whale Airship Company has a total of 10 docks on Minqin, which can be divided into three types according to their size.
There are two airship docks that can be built in Blue Whale Type 3, and they are in one of the docks at this time.
Hou Xin looked at the near-ball-shaped new airship and asked, "Director Li, can this airship be tested?"
Li Yunpeng, wearing glasses, pushed his glasses: "The experimental airship No. 1 can be tested, I plan to test it in these two days."
"Don't you plan to go back to your hometown?" Hou Xin asked curiously.
Li Yunpeng shook his head: "My parents have passed away, and other relatives have not had much contact. It's almost the same whether they can go back or not. It's better to stay in the company. There are still many colleagues here." Hou Xin patted him on the shoulder: "Director Li is alone and needs someone to accompany him in daily life. Our company does not oppose employees falling in love, getting married and having children during this period. If you have any ideas, I can introduce it to you, but considering avoiding suspicion, I can only introduce female employees of other branches to you."
"Hehe, thank you, but there is no need to worry. I have been used to it alone for so many years." Li Yunpeng politely declined Hou Xin's kindness.
"Okay!" Hou Xin just mentioned it casually and did not continue to dig into this topic.
The two chatted for a while, and Hou Xin explained the other matters clearly. Then he and some employees who needed to take annual leave left Minqin County and returned home at Liangzhou High-speed Railway Station.
Early the next morning.
Li Yunpeng, who stayed garrison, started the first test with dozens of technicians and some employees who assisted with the test.
The dome of the airship dock slowly moves to both sides, revealing the entire dock.
Because of safety issues, the utilization rate of the entire airship dock is very low, and only about one-seventh of it is used.
Li Yunpeng knew this clearly, but it was too late to build a special dock, so he could only use it. He would consider whether to build a special dock in the future.
"Director Li, the dome has been unfolded."
Li Yunpeng, who came to his senses, looked at the time and ordered: "Each department will take care of it and start the first flight test."
"Received!"
Everyone held his breath and carefully followed the steps agreed yesterday, operating the airship to take off.
The design of this airship is completely different from that of the Blue Whale. The airship is completely spherical, so the internal airbag material and skin material are used at the least, and the skeleton part is also very small.
The spherical airship with a diameter of 85 meters has an internal airbag volume of 300,000 cubic meters and an overall weight of 33 tons.
Half an hour later, the airship quickly floated in the stratosphere at an altitude of 18,000 meters.
At the same time, it also flew over the nearby airship test field.
With the surveillance camera carried by the airship, Li Yunpeng can clearly see the ground and the sun in the southeast.
"Adjust the position of the photovoltaic panel."
"Yes."
The movable center of gravity inside the airship is also the position of equipment such as hydrogen storage tanks inside the airship. It is completely in an airbag wrapped in hydrogen gas, which is equivalent to a small airbag wrapped inside the large airbag.
By moving the small airbag inside, the center of gravity of the spherical airship can be changed, so that the flying posture of the airship can be adjusted, so that the solar photovoltaic panels are always facing the sunlight.
About one-third of the entire airship surface covers primary silicon carbide nanotube photovoltaic panels, with an area of about 7500 square meters.
"The posture adjustment has been completed, and the photovoltaic panel is currently facing the sunlight."
"Switch on the automatic sunlight tracking system."
"Yes."
Li Yunpeng continued to instruct: "Start start cable docking."
"Received."
Staff controlled the spherical airship and flew to the cable interface temporarily arranged with the test site, while the staff at the test site manually inserted the cable thrown by the airship into the interface.
This high-strength cable is not a copper cable, but an aluminum cable, and it is not an ordinary aluminum cable, but an aluminum-silicon nanotube cable. This is a material found in the process of studying superconducting mercury-silica nanotube replacements. The researchers tried to use fused aluminum liquid to replace mercury or gallium, but naturally failed.
But it cannot be said to be completely failed, because this aluminum-silicon nanotube has very good conductivity, between copper and silver, and has good overall strength. In addition, the unit weight is relatively light, it has many important uses, and at least it can replace the use of copper wire on conductive lines.
So Li Yunpeng, who needed super long and high-strength cables, found this material from the inside and replaced the copper cable with a previous weight of about 8 tons, a new cable with aluminum-silicon nanotubes, silicon carbide nanotubes, and an insulating rubber sleeve. The overall weight was reduced to 2.6 tons, which ensured that the overall weight of the airship could be controlled at about 33 tons.
"Director Li, the cable connection is complete."
"Start power transmission." Li Yunpeng stared at the data display screen.
As the staff pressed the transmission switch.
The spherical airship began to continuously transmit electricity to the ground power system.
More an hour passed without realizing it.
Li Yunpeng asked the power engineer beside him, "Teacher, what is the power generation power?"
The power engineer raised his head and replied, "Director Li, currently it remains at around 681 watts per square meter."
"681 watts?"
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"It means that the photovoltaic panels can generate 681 watts of electricity per hour per square meter."
"Continue to test."
"Yes."
The sun sets in the afternoon, but the sunlight at an altitude of 18,000 meters is still relatively strong, mainly due to the influence of the sunlight angle caused by the altitude. If it is in high latitude areas in summer, this time will be longer, and even near the polar regions, it can use the polar day to generate electricity all day.
"How many hours will it take to generate electricity today?"
Hearing Li Yunpeng's inquiry, the power engineer Xie Bohui looked at the record: "Today, we generated electricity for 8 hours and 24 minutes. Because we only took off at 8:30 in the morning, we lost more than an hour."
"How much kilowatt-hour of electricity has been generated?"
"Let me take a look." Xie Bohui lowered his head and flipped through the data: "43,158 kilowatt-hours."
"More than 40,000 kilowatt-hours? It's OK."
Xie Bohui said his opinion: "Director Li, if it is a ground solar photovoltaic panel, the efficiency is only about half. Only Sunshine City, similar to the southern part of the snowy plateau, can barely compete with high-altitude photovoltaics."
Li Yunpeng did not comment, but he lowered his head to calculate some data.
According to the average annual power generation of 10 hours, it is almost 50,000 kWh per day, and 18.25 million kWh a year.
At present, the solar power on-grid electricity price has been lowered, at one time only about 0.15 yuan, and will continue to be lowered in the future.
Simply selling electricity in a year, it can earn 2.7375 million yuan.
Li Yunpeng estimated that the cost of a spherical photovoltaic airship was about 2 million yuan overall, mainly because of the simple structure and fewer equipment and materials than transport airships, which led to the overall cost being relatively low.
Of course, he estimated that this price was in the case of mass production, so that the scientific research cost could be shared. Otherwise, if only a few ships were built, the cost would soar to tens of millions per ship.
At this cost, you can make money back in almost a year.
The advantage of stratosphere photovoltaic airships is that the stratosphere is not covered by clouds, there is very little particulate matter in the air, and it is not easy to appear dust to adhere to photovoltaic panels. In addition, the light time is longer than that of the ground, and the amount of solar radiation is also received than that of the ground.
These advantages are super stable photovoltaic power generation system during the day.
In addition to the cheap construction of the new airship, the feasibility of the stratospheric photovoltaic airship has been further improved.
In the past, domestic solar photovoltaic power generation projects were generally built in the northwest and snowy plateaus. Because these places have a long annual light time, the overall solar energy resources are relatively abundant.
But the amount of light resources in the stratosphere is equal across the country. Whether it is the snowy plateau, Jiangnan, or the traditional photovoltaic forbidden area of Bashu Basin, the amount of light resources in the stratosphere above these areas is similar.
However, this kind of photovoltaic airship is not without its shortcomings. Once the stratospheric photovoltaic airship project is really arranged locally, the airship will not be able to get close to the airship within a radius of more than ten kilometers, so as to avoid cables wrapping to the passing airship.
Li Yunpeng put down his tablet and looked at Ai Sikao, a doctor of climate science who also stayed to work overtime: "Doctor, do you think the large-scale deployment of photovoltaic airships in the future will have serious environmental impact?"
After taking a sip of the coffee produced by the company in southern Yunnan, Dr. Ai Sikao frowned: "If it is arranged in a large density, it is inevitable to affect the climate, because these photovoltaic airships are like artificial dark clouds, which have been shrouded in the sky, which will lead to the ground receiving. ”
”Why do you think the density is more appropriate?”
For Li Yunpeng’s question, Dr. Ai Sikao shook his head: “I need to borrow the company’s supercomputer for simulation calculations to give you an accurate answer, but I roughly estimated that the area of the stratospheric photovoltaic panel cannot exceed one ten thousandth of the ground area, which is a relatively suitable upper limit.”
"One in ten thousand?"
"Yeah." Ai Sikao took another sip of coffee: "Take Minqin County as an example, the local area is 15,900 square kilometers, which means that the photovoltaic airships here can arrange up to 1.59 million square meters of stratospheric photovoltaic panels."
"In other words, our country and sea areas can only arrange more than one billion square meters of stratospheric photovoltaic panels in total?" Li Yunpeng fell into deep thought.
Ai Sikao knew that Li Yunpeng was unwilling, but he still persuaded: "Director Li, this scale is actually very large. If it is 1.4 billion square meters, it can generate almost 3.4 trillion kilowatt-hours of electricity every year."
"Sorry, I lost my composure." Li Yunpeng was indeed unwilling just now.
However, ecology and climate are issues that must be considered.
Once the area of the photovoltaic panel exceeds the limit, it may lead to abnormal climate, which will make the gain more than you gain.
Dr. Ai Sikao continued: "Actually, Director Li, your project is relatively lucky. At least it can be put into commercial operation in the future. The daily project that the University of Science and Technology is carrying out and the outer space solar power generation project carried out by the Chinese Academy of Sciences has almost no hope of success."
"Oh? Why?" Li Yunpeng was not sure about the details of these projects.
"The daily project is to verify microwave transmission technology." Dr. Ai Sikao has participated in some content. He mainly does research on the ecological impact of photovoltaic power generation. After taking another sip of coffee, he sighed:
"Hey, the ecological risk of microwave transmission is estimated to be more serious."
Li Yunpeng also reacted: "Will microwaves continue to heat the atmosphere?"
"Well, as Director Li said, microwaves continue to heat the atmosphere. Whether it is microwave transmission or laser transmission, the energy obtained from outer space and finally reaches the ground receiving station's electricity, only about 32%, and the rest is consumed on the transmission route, and the atmosphere is the section with the largest transmission loss."
Hearing this, Li Yunpeng combined the knowledge he knew, and he knew about Dr. Ai Sikao's concerns.
About half of the energy entering the earth from outer space is absorbed by the atmosphere. This energy obviously will not disappear out of thin air, but will remain in the earth's atmosphere.
This is indeed more terrifying than the harm of stratospheric photovoltaic power generation projects.
After all, the energy of stratospheric photovoltaic power generation was originally intended to enter the earth, but now it is only converted into electricity in advance, and is also used in the system inside the earth.
But a large part of the energy generated by photovoltaic power in outer space is extra energy. This energy would not have entered the earth's energy system, but is now input into the earth's energy system by humans using microwave and laser technology. This extra energy will obviously bring huge variables.
So Dr. Ai Sikao is not optimistic about photovoltaic power generation in outer space.
Be more accurate, it is not optimistic about outer space's power transmission to the earth.
If it is used locally in outer space, there is nothing, and inputting electricity into the earth is definitely the choice.
The two chatted all night.
The next day, Jiang Miao also took the time to send an internal email to Li Yunpeng, encouraging Li Yunpeng's team, and also giving this airship a new name.
Because it is a ball-shaped airship, Jiang Miao gave this type of airship a brand new code name: "Jellyfish".
Jellyfish-type airships can not only be used for photovoltaic power generation, but also for sky communication, earth detection, and climate monitoring.
(This chapter ends)